ICQ
NOTE that many values below should be considered preliminary, and as such the data below (and that published on IAU Circulars) should not be used in any serious analyses; furthermore, many of the best comet observers do not have their data listed below (and there is a huge difference in the quality of observations from one observer to another -- both visually and via CCD). Indeed, it is not uncommon that photometric data listed below are actually withdrawn by observers (or the ICQ Editor) due to problems, and sometimes substantial changes are made to the magnitudes before publication in the ICQ. The final, complete form of the data in the published ICQ (or in the electronic ICQ archive of photometric cometary observations) is what should be used. The data below are meant more as an informal guide to current behavior of observable comets. (In general, the data below will be kept on this page only until the detailed tabulated complements to the observations are published in the ICQ -- i.e., quarterly -- at which time they will be eliminated from this page. There is currently no plan to make ICQ-published data available on the Web, but such data are available to interested researchers upon request via e-mail, by individual comet.)
We now have a "Descriptive Information" page, reporting interesting information to supplement the magnitudes below.
At the end of the year 2000, we deleted numerals following comet names on these ICQ webpages and in the ICQ printed pages. With there being no longer a comet named "Shoemaker 2" (leaving "Shoemaker 3" and "Shoemaker 4"), the illogical and unnecessary existence of numerals following comet names makes the start of a new millennium a good time to cease using those numerals. Especially with the wonderful numbering system for short-period comets in place since 1995, whereby comets of two or more apparitions have been assigned permanent numbers, it is redundant to have numerals after a comet's name, and short-period comets of a single apparition have not gotten suffixed numerals since the change to the new designation system in 1995 anyway; for 1-apparition short-period comets discovered prior to 1995, the ICQ will begin using both new-style and old-style designations to help in the unambiguous titling of a specific comet. Indeed, as Brian Marsden noted in the January 1995 issue of the ICQ, history shows great inconsistency and problems regarding the addition of numerals to short-period comet names, and it makes sense to phase them out completely. Some people will prefer to continue using the suffixed name numerals, but we trust that there will be no ambiguity to the new ICQ policy for readers. Most observers appear to be quite comfortable with the new designation system (particularly regarding the permanently-numbered short-period comets), so this policy should not present problems for most people. The old suffixed numerals of comet names are still visible in the list of permanently numbered comets.
An asterisk (*) below denotes that correction was made in the magnitude estimate for atmospheric extinction, while a percent sign (%) incidates that magnitudes of very red comparison stars were corrected to visual magnitudes before use. A colon (:) after the magnitude estimate indicates that the estimate is approximate (uncertainty greater than +/- 0.3 mag); likewise, an ampersand (&) before the coma-diameter estimate indicates that the estimate is approximate. Below are given the Universal Time (UT) date, to 0.01 day, now in reverse chronological order ; the total magnitude estimate; the coma diameter (usually in minutes of arc), with a preceding plus (+) sign for 'artificial' coma diameters employed in CCD photometry (and an exclamation mark for limiting magnitude estimates when the comet is not seen, to denote the size of the defocused comparison-star images); the observer and observing location; and the instrument USED FOR THE MAGNITUDE ESTIMATE (with the size of the instrument indicating the size of the aperture --- i.e., the primary lens or mirror --- in centimeters or meters). In the listing below, if a comet is not seen and a limiting (stellar) magnitude given, a left bracket, [, appears before the magnitude value. A letter 'z' after a coma diameter indicates that it may have been made with a different instrument.
ALERT! Due to excessive spam-e-mailing, it is imperative that legitimate e-mail with observations sent for possible posting here should ONLY be sent in plain-ASCII text and NEVER be sent with html encoding. Also, images should only be sent in e-mails *separate* from plain-text observations, and they should ONLY be sent after first contacting us at ICQ@CFA.HARVARD.EDU to inquire if we'd like to receive images (some select photographers who routinely send high-quality images to the ICQ have a long-time exemption from this rule). Our anti-spam software automatically deletes e-mail with html-encoding and images or MIME-encoding (or anything that does not appear as plain text), so your e-mail may never reach us if you do not follow these guidelines. [11/27/07]
NOTE: Please do not send e-mail with html coding or MIME encoded (or any other encoded way)! Please only send e-mail as straight or plain ASCII text. When sending data for inclusion in this webpage and/or on the IAU Circulars, please send data as listed below, EXCEPT give them chronologically (not in reverse chronological order as given below) and please also give the month on each line of observation (rather than blanks as shown below for second and third observations in the same month). Be sure to give diacritical marks in TeX form (described elsewhere in these webpages). Please send observations daily only for urgent objects -- comets in outburst, comets close to the earth, or novae/variable stars that are rapidly changing their brightness (for IAUCs). Routine comet observational data should be sent only once every week or two, as daily e-mail from dozens of observers can be very difficult to deal with. Please put "CCD [or visual] comet photometry for webpage [or ICQ]" in subject heading.
COMETS LISTED BELOW BY DESIGNATION (unnumbered comets first, numbered comets second). Jump directly to comet: C/2006 P1 (McNaught), or C/2007 F1 (LONEOS), or 17P/Holmes.
NOTE: when a comet is large in size, as comet 17P has been in Nov. 2007, normal binoculars cannot defocus enough to produce proper magnitude estimates, leading to values that are too faint; special instruments are needed for comets larger than about 10' or 15' in size (such instruments include binoculars with detached eyepieces, or 1x monoculars constructed from two binocular objective lenses).
COMET C/1995 O1 (Hale-Bopp)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2006
Jan. 29.56, 19.2*, -- (M. Tsumura, Wakayama, Japan, 18-cm reflector + CCD);
28.82, 19.1*, -- (M. Tsumura, Wakayama, Japan, 18-cm reflector + CCD);
COMET C/2002 VQ94 (LINEAR)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2008
May 5.93, 17.1, +0.2' (A. Baransky, Lisnyky, Ukraine, 0.70-m reflector + CCD);
COMET C/2005 L3 (McNaught)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2008
Apr. 25.91, 13.4, 0'.7 (V. Nevski, Vitebsk, Belarus, 0.3-m reflector);
22.00, 14.1, 0'.6 (V. Nevski, Vitebsk, Belarus, 0.30-m reflector + CCD);
Mar. 28.03, 14.2, 0'.6 (V. Nevski, Vitebsk, Belarus, 0.30-m reflector + CCD)
5.80, 13.9, 0'.6 (S. Yoshida, Ibaraki, Japan, 0.40-m reflector);
COMET C/2006 K3 (McNaught)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2008
Jan. 16.86, 18.8:, +0'.2 (A. Baransky, Lisnyky, Ukraine, 0.70-m reflector + CCD);
COMET C/2006 OF2 (Broughton)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2007
Dec. 9.44, [14.3, ! 0'.4 (S. Yoshida, Gunma, Japan, 0.40-m reflector);
Nov. 30.42, 14.8*, 0'.4 (M. Tsumura, Wakayama, Japan, 35-cm reflector + CCD);
13.90, 13.5, 0'.5 (J. J. Gonzalez, Leon, Spain, 0.20-m reflector);
3.40, 13.9, 0'.4 (S. Yoshida, Gunma, Japan, 0.40-m reflector);
2.83, 14.9, 0'.5 (J. Carvajal, Avila, Spain, 0.45-m reflector);
2.43, 14.6, 0'.7 (K. Yoshimoto, Hirao, Yamaguchi, Japan, 16-cm reflector + CCD);
COMET C/2006 Q1 (McNaught)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2008
May 3.52, 10.8, 1'.2 (S. Yoshida, Gunma, Japan, 0.40-m reflector; through thin clouds);
Apr. 27.96, 11.0, 3' (M. Goiato, Aracatuba, Brasil, 0.22-m reflector);
24.02, 10.9, 3' (M. Goiato, Aracatuba, Brasil, 0.22-m reflector);
18.94, 10.9, 3' (M. Goiato, Aracatuba, Brasil, 0.22-m reflector; moonlight);
18.04, 10.9, 2' (M. Goiato, Aracatuba, Brasil, 0.22-m reflector; moonlight);
16.99, 10.9, 2.5' (M. Goiato, Aracatuba, Brasil, 0.22-m reflector; moonlight);
14.94, 11.5, -- (A. Amorim, Florianopolis, Brazil, 0.18-m reflector; moonlight);
12.14, 11.0, 2'.5 (M. Goiato, Aracatuba, Brasil, 0.22-m reflector);
10.02, 11.0, 2' (M. Goiato, Aracatuba, Brasil, 0.22-m reflector);
9.06, 11.2, +1'.2 (L. A. Mansilla and F. Tifner, Rosario, Argentina, 0.25-m reflector + CCD);
8.94, 12.0:, -- (A. Amorim, Florianopolis, Brazil, 0.18-m reflector);
7.08, 11.0, 2'.5 (M. Goiato, Aracatuba, Brazil, 0.22-m reflector);
6.13, 11.2, -- (A. Amorim, Florianopolis, Brazil, 0.18-m reflector);
5.19, 11.2, 2' (M. Goiato, Aracatuba, Brazil, 0.22-m reflector; clouds);
4.10, 11.0, -- (A. Amorim, Florianopolis, Brazil, 0.18-m reflector);
3.92, 10.7, 2'.0 (J. J. Gonzalez, Asturias, Spain, 0.20-m reflector);
2.03, 10.8, -- (A. Amorim, Florianopolis, Brazil, 0.18-m reflector);
Mar. 30.99, 11.5, 2'.5 (M. Goiato, Aracatuba, Brazil, 0.22-m reflector);
30.13, 11.4, 2'.5 (M. Goiato, Aracatuba, Brazil, 0.22-m reflector);
29.14, 12.0:, -- (A. Amorim, Florianopolis, Brazil, 0.18-m reflector);
28.16, 11.4, 2'.75 (M. Goiato, Aracatuba, Brazil, 0.22-m reflector; moonlight);
27.12, 11.4, 2'.5 (M. Goiato, Aracatuba, Brazil, 0.22-m reflector; moonlight);
26.98, 12.3, -- (A. Amorim, Florianopolis, Brazil, 0.18-m reflector);
26.08, 11.5, 2'.5 (M. Goiato, Aracatuba, Brazil, 0.22-m reflector; moonlight);
22.19, 11.5, 2'.5 (M. Goiato, Aracatuba, Brazil, 0.22-m reflector; moonlight);
17.14, 11.5, 2'.5 (M. Goiato, Aracatuba, Brazil, 0.22-m reflector; moonlight);
9.21, 12.0:, -- (A. Amorim, Florianopolis, Brazil, 0.18-m reflector);
5.56, 11.4, 0'.9 (S. Yoshida, Ibaraki, Japan, 0.40-m reflector);
5.18, 11.7, 1'.5 (M. Goiato, Aracatuba, Brazil, 0.22-m reflector);
5.12, 12.0:, -- (A. Amorim, Florianopolis, Brazil, 0.18-m reflector);
4.14, 11.8, 1'.5 (M. Goiato, Aracatuba, Brazil, 0.22-m reflector);
2.98, 11.8, 1'.75 (M. Goiato, Aracatuba, Brazil, 0.22-m reflector);
2.14, 11.8, 1'.75 (M. Goiato, Aracatuba, Brazil, 0.22-m reflector);
1.14, 12.1, 1' (W. Robledo, El Condor, Argentina, 0.20-m reflector);
Feb. 26.13, 11.9, 1' (M. Goiato, Aracatuba, Brazil, 0.22-m reflector; moonlight interference);
12.45, 12.5:, 1'.3 (S. Rae, Tauranga, New Zealand, 0.25-m reflector);
7.40, 12.1, 0'.9 (S. Rae, Tauranga, New Zealand, 0.25-m reflector);
7.02, 13.0, -- (A. Amorim, Florianopolis, Brazil, 0.18-m reflector);
6.42, 12.1, 1'.0 (S. Rae, Tauranga, New Zealand, 0.25-m reflector);
5.50, 11.9, 1'.2 (S. Rae, Tauranga, New Zealand, 0.25-m reflector);
5.25, 12.5:, -- (A. Amorim, Florianopolis, Brazil, 0.18-m reflector);
4.25, 12.3, 1' (M. Goiato, Aracatuba, Brazil, 0.22-m reflector);
3.16, 12.0:, -- (A. Amorim, Florianopolis, Brazil, 0.18-m reflector);
1.17, 12.3, 1' (M. Goiato, Aracatuba, Brazil, 0.22-m reflector);
1.14, 12.4, 1' (M. Goiato, Aracatuba, Brasil, 0.22-m reflector);
COMET C/2006 S5 (Hill)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2008
Mar. 27.92, 14.4, +0'.5 (L. A. Mansilla, Lanzarote, Canary Is., 0.20-m reflector + CCD);
20.95, 14.1, +0'.5 (L. A. Mansilla, Lanzarote, Canary Is., 0.20-m reflector + CCD);
7.88, 15.2, 0'.3 (V. Nevski, Vitebsk, Belarus, 0.30-m reflector + CCD);
5.55, 14.4, 0'.5 (S. Yoshida, Ibaraki, Japan, 0.40-m reflector);
Feb. 12.88, 14.2, 0'.7 (M. Lehky, Hradec Kralove, Czech Republic, 0.42-reflector);
9.77, 14.0, 0'.3 (W. Hasubick, Buchloe, Germany, 44-cm reflector);
4.05, 14.8, +0'.5 (A. Baransky, Lisnyky, Ukraine, 0.70-m reflector + CCD);
3.92, 15.0, 0'.3 (V. Nevski, Vitebsk, Belarus, 0.30-m reflector + CCD);
COMET C/2006 W3 (Christensen)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2008
Mar. 5.54, 14.7, 0'.3 (S. Yoshida, Ibaraki, Japan, 0.40-m reflector);
Feb. 12.84, 14.3, 0'.6 (M. Lehky, Hradec Kralove, Czech Republic, 0.42-reflector);
9.77, 13.4, 0'.4 (W. Hasubick, Buchloe, Germany, 44-cm reflector);
Jan. 16.94, 15.5, +0'.4 (A. Baransky, Lisnyky, Ukraine, 0.70-m reflector + CCD);
4.85, 15.3, 0'.3 (V. Nevski, Vitebsk, Belarus, 0.30-m reflector + CCD);
4.52, 15.2, 0'.3 (S. Yoshida, Ibaraki, Japan, 0.40-m reflector);
COMET C/2007 B2 (Skiff)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2008
May 5.89, 14.0, +1'.0 (A. Baransky, Lisnyky, Ukraine, 0.70-m reflector + CCD);
Apr. 25.89, 14.5, 0'.7 (V. Nevski, Vitebsk, Belarus, 0.30-m reflector + CCD);
14.93, 14.4, 0'.7 (V. Nevski, Vitebsk, Belarus, 0.30-m reflector + CCD)
12.10, 12.7, 1'.25 (M. Goiato, Aracatuba, Brasil, 0.22-m reflector);
7.10, 13.0, 1' (M. Goiato, Aracatuba, Brazil, 0.22-m reflector);
6.12, 13.1:, 0'.5 (M. Goiato, Aracatuba, Brazil, 0.22-m reflector);
3.94, 12.8, 1'.2 (J. J. Gonzalez, Asturias, Spain, 0.20-m reflector);
Mar. 27.94, 14.1, 0'.7 (V. Nevski, Vitebsk, Belarus, 0.30-m reflector + CCD);
8.01, 14.8, 0'.5 (V. Nevski, Vitebsk, Belarus, 0.30-m reflector + CCD);
5.70, 14.4, 0'.6 (S. Yoshida, Ibaraki, Japan, 0.40-m reflector);
Feb. 26.14, 14.3, +1'.0 (A. Baransky, Lisnyky, Ukraine, 0.70-m reflector + CCD);
10.08, 14.2, 0'.6 (J. J. Gonzalez, Leon, Spain, 0.20-m reflector);
4.05, 15.1, 0'.4 (V. Nevski, Vitebsk, Belarus, 0.30-m reflector + CCD);
3.16, 13.5:, &1' (M. L. Paradowski, Dabrowa-West Polesie, Poland, 0.20-m reflector);
COMET P/2007 C2 (Catalina)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2008
Jan. 4.98, 17.5, 0'.2 (V. Nevski, Vitebsk, Belarus, 0.30-m reflector + CCD);
COMET C/2007 E2 (Lovejoy)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2007
Aug. 14.84, 14.3, 0'.8 (M. Lehky, Hradec Kralove, Czech Republic, 0.42-m reflector);
6.85, 14.1, 0'.9 (M. Lehky, Hradec Kralove, Czech Republic, 0.42-m reflector);
5.89, 14.0, 0'.9 (M. Lehky, Hradec Kralove, Czech Republic, 0.42-m reflector);
4.89, 13.8, 1' (M. Lehky, Hradec Kralove, Czech Republic, 0.42-m reflector);
COMET C/2007 F1 (LONEOS)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2007
Dec. 2.94, 9.4, 2' (J. G. de S. Aguiar, Campinas, Brazil, 25x100 binoculars);
1.96, 10.1, 1'.5 (M. Goiato, Aracatuba, Brasil, 0.22-m reflector);
1.95, 9.3, 3' (J. G. de S. Aguiar, Campinas, Brazil, 25x100 binoculars);
Nov. 30.96, 9.3:, -- (A. Amorim, Florianopolis, Brazil, 0.18-m reflector);
30.95, 9.2, 3' (J. G. de S. Aguiar, Campinas, Brasil, 25x100 binoculars);
29.95, 9.2, 3' (J. G. de S. Aguiar, Campinas, Brasil, 25x100 binoculars);
28.95, 9.5, 2' (M. Goiato, Aracatuba, Brasil, 0.22-m reflector);
28.93, 9.6, 2' (W. Souza, Sao Paulo, Brazil, 20-cm reflector);
27.96, 9.4, 2' (M. Goiato, Aracatuba, Brasil, 0.22-m reflector);
27.94, 9.1, 3' (J. G. de S. Aguiar, Campinas, Brasil, 25x100 binoculars);
26.95, 9.1, 3' (J. G. de S. Aguiar, Campinas, Brasil, 25x100 binoculars);
23.95, 8.6, 5' (J. G. de S. Aguiar, Campinas, Brazil, 25x100 binoculars);
23.94, 9.0, 2' (M. Goiato, Aracatuba, Brazil, 0.22-m reflector; moonlight);
22.95, 8.5, 5' (J. G. de S. Aguiar, Campinas, Brazil, 25x100 binoculars);
21.95, 8.4, 5' (J. G. de S. Aguiar, Campinas, Brazil, 25x100 binoculars);
20.96, 8.4, 2' (M. Goiato, Aracatuba, Brasil, 0.22-m reflector; moonlight);
20.95, 8.4, 5' (J. G. de S. Aguiar, Campinas, Brazil, 25x100 binoculars);
19.96, 8.7, 1' (A. Amorim, Florianopolis, Brazil, 0.18-m reflector; moonlight);
17.95, 8.3, 2' (M. Goiato, Aracatuba, Brasil, 0.22-m reflector);
16.98, 8.3, 3' (J. G. de S. Aguiar, Montevideo, Uruguay, 11x80 binoculars);
15.96, 8.0, 2' (A. Amorim, Florianopolis, Brazil, 20x80 binoculars);
14.42, 8.1, -- (D. A. J. Seargent, Cowra, N.S.W., 25x100 binoculars);
10.95, 8.1, 2'.5 (M. Goiato, Aracatuba, Brasil, 0.22-m reflector);
10.94, 7.8, 3' (W. Souza, Sao Paulo, Brazil, 20-cm reflector; clouds interfering);
9.95, 7.7, 3' (W. Souza, Sao Paulo, Brazil, 11x80 binoculars; clouds; comet alt. 8 deg);
9.94, 7.9, 3' (M. Goiato, Aracatuba, Brasil, 0.22-m reflector);
8.94, 6.7, 2' (A. Amorim, Florianopolis, Brazil, 20x80 binoculars);
7.93, 7.5, 3' (W. Souza, Sao Paulo, Brazil, 11x80 binoculars);
7.42, 7.4, 3' (M. Mattiazzo, Castlemaine, Vic., Australia, 25x100 binoculars);
6.95, 6.7, 7' (M. Goiato, Aracatuba, Brasil, 7x50 binoculars);
6.42, 6.7, 3' (M. Mattiazzo, Castlemaine, Vic., Australia, 25x100 binoculars);
5.42, 6.0, 3' (M. Mattiazzo, Castlemaine, Victoria, Australia, 25x100 binoculars);
COMET C/2007 G1 (LINEAR)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2008
Mar. 28.09, 14.8, 0'.3 (V. Nevski, Vitebsk, Belarus, 0.30-m reflector + CCD);
5.52, [13.9, ! 0'.3 (S. Yoshida, Ibaraki, Japan, 0.40-m reflector);
2007
Oct. 17.42, 16.4*, 0'.2 (M. Tsumura, Wakayama, Japan, 35-cm reflector + CCD);
Aug. 24.83, 15.9, +0'.3 (A. Baransky, Lisnyky, Ukraine, 0.70-m reflector + CCD);
COMET P/2007 H1 (McNaught)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2008
Jan. 4.41, [13.7, ! 0'.5 (S. Yoshida, Ibaraki, Japan, 0.40-m reflector);
2007
Dec. 9.45, 14.0, 0'.6 (S. Yoshida, Gunma, Japan, 0.40-m reflector);
8.48, 13.4, 0'.7 (S. Yoshida, Gunma, Japan, 0.40-m reflector);
Nov. 30.49, 14.9*, 0'.5 (M. Tsumura, Wakayama, Japan, 35-cm reflector + CCD);
3.91, 13.2, 1'.5 (J. J. Gonzalez, Leon, Spain, 0.20-m reflector);
3.46, 14.2, 1'.2 (K. Yoshimoto, Hirao, Yamaguchi, Japan, 16-cm reflector + CCD);
3.45, 13.3, 0'.5 (S. Yoshida, Gunma, Japan, 0.40-m reflector);
2.84, 14.9, 1' (J. Carvajal, Avila, Spain, 0.45-m reflector);
COMET C/2007 M1 (McNaught)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2007
Aug. 22.91, 18.8, +0'.1 (A. Baransky, Lisnyky, Ukraine, 0.70-m reflector + CCD);
21.85, 18.5, +0'.1 (A. Baransky, Lisnyky, Ukraine, 0.70-m reflector + CCD);
COMET C/2007 M3 (LINEAR)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2007
Aug. 22.82, 16.3, +0'.2 (A. Baransky, Lisnyky, Ukraine, 0.70-m reflector + CCD);
21.79, 16.4, +0'.2 (A. Baransky, Lisnyky, Ukraine, 0.70-m reflector + CCD);
5.93, 16.8, +0'.3 (A. Baransky, Lisnyky, Ukraine, 0.70-m reflector + CCD);
3.81, 16.9, +0'.2 (A. Baransky, Lisnyky, Ukraine, 0.70-m reflector + CCD);
COMET P/2007 N1 McNaught
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
Aug. 25.05, 17.1, +0'.2 (A. Baransky, Lisnyky, Ukraine, 0.70-m reflector + CCD);
22.02, 17.0, +0'.2 (A. Baransky, Lisnyky, Ukraine, 0.70-m reflector + CCD);
COMET C/2007 N3 (Lulin)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2007
Nov. 19.71, 16.8, +0'.3 (A. Baransky, Lisnyky, Ukraine, 0.70-m reflector + CCD);
Sept. 5.89, 17.1, +0'.2 (A. Baransky, Lisnyky, Ukraine, 0.70-m reflector + CCD);
COMET C/2007 O1 (LINEAR)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2007
Aug. 3.85, 17.1, +0'.2 (A. Baransky, Lisnyky, Ukraine, 0.70-m reflector + CCD);
COMET P/2007 Q2 (Gilmore)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2007
Oct. 9.80, 18.0, +0'.2 (A. Baransky, Lisnyky, Ukraine, 0.70-m reflector + CCD);
Sep. 18.01, 18.3, +0'.2 (A. Baransky, Lisnyky, Ukraine, 0.70-m reflector + CCD);
COMET P/2007 R1 (Larson)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2007
Oct. 17.82, 18.2, +0'.2 (A. Baransky, Lisnyky, Ukraine, 0.70-m reflector + CCD);
16.52, 17.0*, 0'.5 (M. Tsumura, Wakayama, Japan, 35-cm reflector + CCD);
9.84, 17.8, +0'.2 (A. Baransky, Lisnyky, Ukraine, 0.70-m reflector + CCD);
COMET P/2007 R2 (Gibbs)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2007
Nov. 19.95, 17.7, +0'.3 (A. Baransky, Lisnyky, Ukraine, 0.70-m reflector + CCD);
Oct. 18.04, 17.8, +0'.2 (A. Baransky, Lisnyky, Ukraine, 0.70-m reflector + CCD);
9.85, 18.0, +0'.2 (A. Baransky, Lisnyky, Ukraine, 0.70-m reflector + CCD);
COMET P/2007 R3 (Gibbs)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2007
Oct. 9.94, 18.3, +0'.2 (A. Baransky, Lisnyky, Ukraine, 0.70-m reflector + CCD);
COMET P/2007 R4 (Garradd)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2007
Oct. 11.65, 17.9*, 0'.3 (M. Tsumura, Wakayama, Japan, 35-cm reflector + CCD);
10.02, 16.3, +0'.4 (A. Baransky, Lisnyky, Ukraine, 0.70-m reflector + CCD);
COMET P/2007 S1 (Zhao)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2007
Oct. 16.57, 18.1*, -- (M. Tsumura, Wakayama, Japan, 35-cm reflector + CCD);
9.92, 18.2, +0'.2 (A. Baransky, Lisnyky, Ukraine, 0.70-m reflector + CCD);
1.78, 18.3, +0'.2 (A. Baransky, Lisnyky, Ukraine, 0.70-m reflector + CCD);
COMET C/2007 S2 (Lemmon)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2007
Nov. 30.10, 17.8, +0'.2 (A. Baransky, Lisnyky, Ukraine, 0.70-m reflector + CCD);
6.09, 18.1, +0'.2 (A. Baransky, Lisnyky, Ukraine, 0.70-m reflector + CCD);
COMET C/2007 T1 (McNaught)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2008
Mar. 30.98, 12.0, 1'.5 (M. Goiato, Aracatuba, Brazil, 0.22-m reflector);
23.96, 11.4, 3' (M. Goiato, Aracatuba, Brazil, 0.22-m reflector);
23.80, 11.5:, &1' (M. L. Paradowski, Dabrowa, Poland, 0.20-m reflector; clouds; alt. 15 deg);
20.96, 11.2:, 2'.5 (M. Goiato, Aracatuba, Brazil, 0.22-m reflector; moonlight);
16.96, 10.9, 3' (M. Goiato, Aracatuba, Brazil, 0.22-m reflector; moonlight);
13.04, 10.7, 3' (M. Goiato, Aracatuba, Brazil, 0.22-m reflector);
9.98, 11.0:, -- (A. Amorim, Florianopolis, Brazil, 0.18-m reflector);
9.97, 10.5, 3'.5 (M. Goiato, Aracatuba, Brazil, 0.22-m reflector);
9.78, 10.3:, & 2' (M. L. Paradowski, Dabrowa-West Polesie, Poland, 0.20-m reflector; haze, alt. 8 deg);
8.98, 11.2, -- (A. Amorim, Florianopolis, Brazil, 0.18-m reflector);
8.96, 10.5, 3'.5 (M. Goiato, Aracatuba, Brazil, 0.22-m reflector);
7.98, 10.5, 4' (M. Goiato, Aracatuba, Brazil, 0.22-m reflector);
6.98, 11.0:, -- (A. Amorim, Florianopolis, Brazil, 0.18-m reflector);
6.08, 10.4, 4' (M. Goiato, Aracatuba, Brazil, 0.22-m reflector);
5.84, 10.5, 3' (J. J. Gonzalez, Leon, Spain, 0.20-m reflector);
5.41, 10.7, 1'.9 (S. Yoshida, Ibaraki, Japan, 0.40-m reflector);
5.14, 10.4, 4' (M. Goiato, Aracatuba, Brazil, 0.22-m reflector);
2.96, 10.4, 4' (M. Goiato, Aracatuba, Brazil, 0.22-m reflector);
1.98, 10.3, 4' (M. Goiato, Aracatuba, Brazil, 0.22-m reflector);
1.83, 10.3, 3' (J. J. Gonzalez, Leon, Spain, 0.20-m reflector);
Feb. 27.17, 10.3, 2'.1 (J. Shanklin, Rothera station, Antarctica, 0.09-m refractor);
27.08, 10.3, 4' (M. Goiato, Aracatuba, Brazil, 0.22-m reflector);
26.06, 10.2, 4' (M. Goiato, Aracatuba, Brazil, 0.22-m reflector);
13.20, 9.7, 4' (W. Robledo, El Condor, Argentina, 0.20-m reflector);
12.40, 9.9, 5' (S. Rae, Tauranga, New Zealand, 0.25-m reflector);
11.39, 10.0, 4' (S. Rae, Tauranga, New Zealand, 0.25-m reflector);
8.99, 9.0:, -- (A. Amorim, Florianopolis, Brazil, 20x80 binoculars, clouds interference);
8.38, 9.8, 4' (S. Rae, Tauranga, New Zealand, 0.25-m reflector);
7.48, 8.7, 6' (D. A. J. Seargent, Cowra, NSW, Australia, 25x100 binoculars);
7.39, 9.5, 4' (S. Rae, Tauranga, New Zealand, 0.25-m reflector);
7.00, 9.3:, -- (A. Amorim, Florianopolis, Brazil, 0.18-m reflector; very close to HD 49036);
6.40, 9.6, 3' (S. Rae, Tauranga, New Zealand, 0.25-m reflector);
6.00, 9.3, 3' (A. Amorim, Florianopolis, Brazil, 0.18-m reflector);
5.47, 9.5, 4' (S. Rae, Tauranga, New Zealand, 0.25-m reflector);
5.24, 9.1, 4' (A. Amorim, Florianopolis, Brazil, 0.18-m reflector);
4.29, 9.3, 5' (M. Goiato, Aracatuba, Brazil, 0.22-m reflector);
2.14, 9.2, 5' (M. Goiato, Aracatuba, Brazil, 0.22-m reflector);
1.98, 8.9, 3' (A. Amorim, Florianopolis, Brazil, 20x80 binoculars);
1.11, 9.1, 5' (M. Goiato, Aracatuba, Brasil, 0.22-m reflector);
COMET P/2007 T2 (Kowalski)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2007
Nov. 20.10, 17.6, +0'.3 (A. Baransky, Lisnyky, Ukraine, 0.70-m reflector + CCD);
6.14, 17.1, +0'.3 (A. Baransky, Lisnyky, Ukraine, 0.70-m reflector + CCD);
COMET C/2007 T5 (Gibbs)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2008
Feb. 26.04, 18.2, +0'.2 (A. Baransky, Lisnyky, Ukraine, 0.70-m reflector + CCD);
2007
Nov. 30.07, 17.6, +0'.2 (A. Baransky, Lisnyky, Ukraine, 0.70-m reflector + CCD);
20.05, 17.7, +0'.2 (A. Baransky, Lisnyky, Ukraine, 0.70-m reflector + CCD);
6.06, 18.0, +0'.2 (A. Baransky, Lisnyky, Ukraine, 0.70-m reflector + CCD);
COMET P/2007 T6 (Catalina)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2007
Nov. 6.12, 17.1, +0'.2 (A. Baransky, Lisnyky, Ukraine, 0.70-m reflector + CCD);
Oct. 18.08, 17.5, +0'.2 (A. Baransky, Lisnyky, Ukraine, 0.70-m reflector + CCD);
17.05, 17.2, +0'.2 (A. Baransky, Lisnyky, Ukraine, 0.70-m reflector + CCD);
COMET C/2007 U1 (LINEAR)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2007
Nov. 30.11, 16.8, +0'.2 (A. Baransky, Lisnyky, Ukraine, 0.70-m reflector + CCD);
20.03, 17.1, +0'.3 (A. Baransky, Lisnyky, Ukraine, 0.70-m reflector + CCD);
COMET P/2007 V1 (Larson)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2008
Jan. 4.98, 17.7, +0'.2 (A. Baransky, Lisnyky, Ukraine, 0.70-m reflector + CCD);
2007
Nov. 19.90, 17.5, +0'.3 (A. Baransky, Lisnyky, Ukraine, 0.70-m reflector + CCD);
COMET P/2007 V2 (Hill)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2007
Nov. 19.86, 19.4, +0'.2 (A. Baransky, Lisnyky, Ukraine, 0.70-m reflector + CCD);
COMET C/2007 W1 (Boattini)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2008
May 8.81, 6.8, 25' (T. Scarmato, Calabria, Italy, 7x50 binoculars);
7.82, 7.0, 20' (T. Scarmato, Calabria, Italy, 20x90 binoculars);
6.84, 7.6, 17' (K. Hornoch, Vohancice, Czech Republic, 10x80 binoculars);
5.85, 7.5, 15' (K. Hornoch, Vohancice, Czech Republic, 10x80 binoculars);
5.10, 7.1, 20' (M. Goiato, Aracatuba, Brasil, 7x50 binoculars; clouds);
3.84, 7.7, 14' (K. Hornoch, Vohancice, Czech Republic, 10x80 binoculars);
3.52, 7.8, 9' (S. Yoshida, Gunma, Japan, 0.40-m reflector);
3.43, 7.0, 17' (S. Rae, Tauranga, New Zealand, 8x22 binoculars);
2.94, 6.9, 20' (J.J. Gonzalez, Asturias, Spain, 10x50 binoculars);
2.44, 6.9, 18' (S. Rae, Tauranga, New Zealand, 10x50 binoculars);
1.40, 6.9, 15' (S. Rae, Tauranga, New Zealand, 10x50 binoculars);
Apr. 30.93, 7.3, 12' (A. Amorim, Florianopolis, Brazil, 10x50 binoculars);
30.11, 7.5, 10' (A. Amorim, Florianopolis, Brazil, 20x80 binoculars);
28.97, 7.5, 23' (M. Goiato, Aracatuba, Brasil, 7x50 binoculars);
28.94, 7.2, 17' (J. J. Gonzalez, Leon, Spain, 10x50 binoculars);
28.85, 8.0, 13' (K. Hornoch, Vohancice, Czech Republic, 10x80 binoculars);
28.00, 7.5, 10' (A. Amorim, Florianopolis, Brazil, 10x50 binoculars);
27.97, 7.5, 22' (M. Goiato, Aracatuba, Brasil, 7x50 binoculars);
26.99, 7.6, 20' (M. Goiato, Aracatuba, Brasil, 7x50 binoculars);
26.84, 9.1 (U. Pilz, Leipzig, Germany, 32-cm reflector);
26.45, 7.3, 15' (D. A. J. Seargent, The Entrance, NSW, Australia, 10x50 binoculars);
25.91, 8.0, 6' (A. Amorim, Florianopolis, Brazil, 20x80 binoculars);
25.88, 9.5, 7' (M. L. Paradowski, Dabrowa, Poland, 0.25-m reflector; alt. 14.4 deg);
25.00, 8.5, 6' (A. Amorim, Florianopolis, Brazil, 0.18-m reflector);
24.96, 7.7, 20' (M. Goiato, Aracatuba, Brasil, 7x50 binoculars);
24.85, 8.6, 10' (K. Hornoch, Vohancice, Czech Republic, 10x80 binoculars);
23.98, 8.1, 15' (M. Goiato, Aracatuba, Brasil, 0.22-m reflector);
23.88, 7.6, 15' (J. J. Gonzalez, Leon, Spain, 10x50 binoculars);
23.86, 8.6, 9' (K. Hornoch, Vohancice, Czech Republic, 10x80 binoculars);
22.98, 8.0, 16' (M. Goiato, Aracatuba, Brasil, 0.22-m reflector; moonlight);
22.87, 9.6, 3'.5 (F. Kugel, Dauban, France, 0.5-m reflector + CCD + R filter);
19.18, 8.4:, 7' (M. Goiato, Aracatuba, Brasil, 0.22-m reflector; strong moonlight);
18.18, 8.5:, 5' (M. Goiato, Aracatuba, Brasil, 0.22-m reflector); strong moonlight);
18.00, 9.0:, -- (A. Amorim, Florianopolis, Brazil, 0.18-m reflector; moonlight);
17.00, 8.5, 10' (M. Goiato, Aracatuba, Brasil, 0.22-m reflector; moonlight);
15.02, 9.3, -- (A. Amorim, Florianopolis, Brazil, 0.18-m reflector; moonlight);
13.82, 8.6, 4'.2 (W. Hasubick, Buchloe, Germany, 10-cm refractor);
13.25, 8.6, 12' (M. Goiato, Aracatuba, Brasil, 0.22-m reflector);
12.07, 8.2, 12' (J. J. Gonzalez, Leon, Spain, 25x100 binoculars);
12.00, 8.9, 12' (M. Goiato, Aracatuba, Brasil, 0.22-m reflector);
10.98, 9.0, -- (A. Amorim, Florianopolis, Brazil, 0.18-m reflector);
10.09, 9.1, 10' (M. Goiato, Aracatuba, Brasil, 0.22-m reflector);
8.94, 9.5, -- (A. Amorim, Florianopolis, Brazil, 0.18-m reflector);
8.14, 9.4, 9' (M. Goiato, Aracatuba, Brazil, 0.22-m reflector);
7.94, 9.5, 5' (A. Amorim, Florianopolis, Brazil, 0.18-m reflector);
7.12, 9.5, 9' (M. Goiato, Aracatuba, Brazil, 0.22-m reflector);
6.12, 9.7, 7' (M. Goiato, Aracatuba, Brazil, 0.22-m reflector);
6.11, 8.6, 12' (J. J. Gonzalez, Asturias, Spain, 10x50 binoculars);
6.01, 10.0, -- (A. Amorim, Florianopolis, Brazil, 0.18-m reflector);
5.23, 9.6, 7' (M. Goiato, Aracatuba, Brazil, 0.22-m reflector; clouds);
4.08, 10.0, 3' (A. Amorim, Florianopolis, Brazil, 0.18-m reflector);
3.98, 8.9, 10' (J. J. Gonzalez, Asturias, Spain, 10x50 binoculars);
2.40, 10.1, 4' (M. Mattiazzo, Castlemaine, Victoria, 25x100 binoculars);
2.09, 9.5, 6' (J. J. Gonzalez, Leon, Spain, 25x100 binoculars);
2.03, 10.3, -- (A. Amorim, Florianopolis, Brazil, 0.18-m reflector);
Mar. 31.53, 10.2, 3'.2 (K. Yoshimoto, Yamaguchi, Japan, 0.25-m reflector);
31.44, 10.4, 4' (M. Mattiazzo, Castlemaine, Victoria, 0.2-m reflector);
31.02, 9.7, 9' (M. Goiato, Aracatuba, Brazil, 0.22-m reflector);
30.90, 9.7, 6' (J. J. Gonzalez, Asturias, Spain, 25x100 binoculars);
30.12, 9.8, 9' (M. Goiato, Aracatuba, Brazil, 0.22-m reflector);
29.15, 11.5:, -- (A. Amorim, Florianopolis, Brazil, 0.18-m reflector);
29.07, 10.3, 8' (M. Goiato, Aracatuba, Brazil, 0.22-m reflector);
29.01, 10.1, 6' (J. J. Gonzalez, Asturias, Spain, 0.20-m reflector);
28.15, 10.6, 5' (M. Goiato, Aracatuba, Brazil, 0.22-m reflector; moonlight);
27.11, 11.1, 4' (M. Goiato, Aracatuba, Brazil, 0.22-m reflector; moonlight);
26.06, 11.2, 3' (M. Goiato, Aracatuba, Brazil, 0.22-m reflector; moonlight);
22.16, 11.2:, 2' (M. Goiato, Aracatuba, Brazil, 0.22-m reflector; moonlight);
17.12, 11.4, 3' (M. Goiato, Aracatuba, Brazil, 0.22-m reflector; moonlight);
9.19, 12.5:, -- (A. Amorim, Florianopolis, Brazil, 0.18-m reflector);
8.05, 14.3, 0'.5 (V. Nevski, Vitebsk, Belarus, 0.30-m reflector + CCD);
6.08, 12.7, 2'.2 (J. J. Gonzalez, Leon, Spain, 0.20-m reflector);
5.70, 13.8, 0'.6 (S. Yoshida, Ibaraki, Japan, 0.40-m reflector);
4.21, 13.9, 0'.3 (M. Goiato, Aracatuba, Brazil, 0.22-m reflector);
Feb. 7.13, 14.3, 0'.8 (J. J. Gonzalez, Leon, Spain, 0.20-m reflector);
4.17, 14.9, +0'.5 (A. Baransky, Lisnyky, Ukraine, 0.70-m reflector + CCD);
3.14, 13.9, 0'.8 (M. L. Paradowski, Dabrowa-West Polesie, Poland, 0.20-m reflector);
COMET C/2007 W3 (LINEAR)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2008
Jan. 16.81, 17.8, +0'.2 (A. Baransky, Lisnyky, Ukraine, 0.70-m reflector + CCD);
12.87, 17.7, +0'.2 (A. Baransky, Lisnyky, Ukraine, 0.70-m reflector + CCD);
2.97, 17.5, +0'.2 (A. Baransky, Lisnyky, Ukraine, 0.70-m reflector + CCD);
COMET C/2007 Y1 (LINEAR)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2008
Feb. 26.00, 16.7, +0'.2 (A. Baransky, Lisnyky, Ukraine, 0.70-m reflector + CCD);
12.03, 16.7, +0'.3 (A. Baransky, Lisnyky, Ukraine, 0.70-m reflector + CCD);
4.10, 17.0, +0.2' (A. Baransky, Lisnyky, Ukraine, 0.70-m reflector + CCD);
Jan. 5.10, 17.3, +0'.3 (A. Baransky, Lisnyky, Ukraine, 0.70-m reflector + CCD);
3.06, 17.3, +0'.3 (A. Baransky, Lisnyky, Ukraine, 0.70-m reflector + CCD);
COMET C/2008 A1 (McNaught)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2008
Apr. 27.94, 11.4, 4' (M. Goiato, Aracatuba, Brasil, 0.22-m reflector);
26.96, 11.5, 4' (M. Goiato, Aracatuba, Brasil, 0.22-m reflector);
24.94, 11.6, 4' (M. Goiato, Aracatuba, Brasil, 0.22-m reflector);
17.94, 11.9, 3' (M. Goiato, Aracatuba, Brasil, 0.22-m reflector; moonlight);
11.96, 12.2, 2' (M. Goiato, Aracatuba, Brasil, 0.22-m reflector; moonlight interfering);
COMET P/2008 A2 (LINEAR)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2008
Mar. 6.84, 19.3, +0'.3 (A. Baransky, Lisnyky, Ukraine, 0.70-m reflector + CCD);
Feb. 25.80, 18.3, +0'.2 (A. Baransky, Lisnyky, Ukraine, 0.70-m reflector + CCD);
12.03, 18.4, +0'.2 (A. Baransky, Lisnyky, Ukraine, 0.70-m reflector + CCD);
3.99, 18.3, +0'.2 (A. Baransky, Lisnyky, Ukraine, 0.70-m reflector + CCD);
COMET C/2008 C1 (Chen-Gao)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2008
May 4.92, 10.6, 4' (M. Goiato, Aracatuba, Brasil, 0.22-m reflector);
Apr. 27.92, 10.4, 5' (M. Goiato, Aracatuba, Brasil, 0.22-m reflector);
26.93, 10.3, 5' (M. Goiato, Aracatuba, Brasil, 0.22-m reflector);
24.84, 9.9, 5' (K. Hornoch, Vohancice, Czech Republic, 0.13-m reflector);
23.93, 10.2, 5' (M. Goiato, Aracatuba, Brasil, 0.22-m reflector);
23.90, 10.0, 3'.5 (J. J. Gonzalez, Leon, Spain, 0.20-m reflector);
23.83, 10.0, 4'.5 (K. Hornoch, Vohancice, Czech Republic, 0.13-m reflector);
18.93, 10.1, 4' (M. Goiato, Aracatuba, Brasil, 0.22-m reflector; moonlight);
17.93, 10.1, 2' (M. Goiato, Aracatuba, Brasil, 0.22-m reflector; moonlight);
13.83, 10.0, 4'.8 (W. Hasubick, Buchloe, Germany, 10-cm refractor);
11.94, 10.3:, 3' (M. Goiato, Aracatuba, Brasil, 0.22-m reflector; moonlight);
9.93, 10.2, 5' (M. Goiato, Aracatuba, Brasil, 0.22-m reflector);
9.77, 14.6, +0'.6 (A. Baransky, Lisnyky, Ukraine, 0.70-m reflector + CCD);
6.26, 10.3, 2'.5 (M. Linnolt, Dillingham, Hawaii, 0.20-m reflector);
5.93, 9.9, 5' (M. Goiato, Aracatuba, Brazil, 0.22-m reflector);
3.96, 9.6, 5' (J. J. Gonzalez, Asturias, Spain, 25x100 binoculars);
Mar. 31.48, 10.4, 4'.0 (K. Yoshimoto, Yamaguchi, Japan, 0.25-m reflector);
30.95, 9.8, 4' (M. Goiato, Aracatuba, Brazil, 0.22-m reflector);
30.89, 9.5, 5' (J. J. Gonzalez, Asturias, Spain, 25x100 binoculars);
29.95, 9.6, 3' (M. Goiato, Aracatuba, Brazil, 0.22-m reflector);
29.92, 9.6, 2' (J. G. de S. Aguiar, Joaquim Egidio, Brazil, 25x100 binoculars);
29.86, 9.7, 3' (A. Novichonok, Konchezero, Russia, 13-cm reflector);
29.83, 9.5, 5'.5 (M. Meyer, Limburg, Germany, 15-cm refractor);
29.82, 10.6, 3' (U. Pilz, Leipzig, Germany, 32-cm reflector);
28.95, 9.6, 4' (M. Goiato, Aracatuba, Brazil, 0.22-m reflector);
28.95, 9.5, 5' (J. J. Gonzalez, Asturias, Spain, 25x100 binoculars);
26.77, 9.9, 4' (A. Novichonok, Konchezero, Russia, 13-cm reflector);
25.94, 9.8:, 3' (M. Goiato, Aracatuba, Brazil, 0.22-m reflector);
25.85, 9.6, 3'.5 (M. Meyer, Limburg, Germany, 15-cm refractor);
24.47, 10.9, 2'.3 (K. Yoshimoto, Yamaguchi, Japan, 0.25-m reflector);
23.83, 9.8, 3'.1 (M. Meyer, Limburg, Germany, 15-cm refractor);
23.80, 10.8, 4' (V. Nevski, Vitebsk, Belarus, 0.3-m reflector);
19.85, 11.5, 3'.0 (J. Qvam, Borrevannet, Horten, Norway, 0.10-m refractor + CCD + V filter; moonlight);
10.95, 9.8, 5' (J. J. Gonzalez, Asturias, Spain, 25x100 binoculars);
9.81, 10.4, 3'.5 (M. L. Paradowski, Dabrowa-West Polesie, Poland, 0.20-m reflector; haze);
9.28, 10.4, 3'.5 (M. Linnolt, Dillingham, Hawaii, 0.20-m reflector);
6.87, 14.0, +1'.2 (A. Baransky, Lisnyky, Ukraine, 0.70-m reflector + CCD);
6.83, 10.5, 3'.5 (T. Karhula, Virsbo, Sweden, 25x100 binoculars)
5.95, 10.1, 5' (J. J. Gonzalez, Leon, Spain, 25x100 binoculars);
5.49, 10.3, 3'.5 (S. Yoshida, Ibaraki, Japan, 0.40-m reflector);
4.79, 11.8, -- (U. Pilz, Leipzig, Germany, 32-cm reflector);
2.25, 11.2, 2'.0 (M. Linnolt, Dillingham, Hawaii, 0.20-m reflector);
1.85, 10.2, 4' (J. J. Gonzalez, Leon, Spain, 25x100 binoculars);
Feb. 24.79, 12.1, 1'.5 (M. L. Paradowski, Dabrowa-West Polesie, Poland, 0.20-m reflector);
24.78, 11.8, 2'.5 (J. Qvam, Borrevannet, Horten, Norway, 0.10-m refractor + CCD + V filter);
22.81, 10.9, 2'.5 (J. J. Gonzalez, Leon, Spain, 0.20-m reflector);
16.77, 12.2, 1'.2 (M. Lehky, Hradec Kralove, Czech Republic, 0.42-m reflector);
15.79, 12.3, 2'.1 (J. Qvam, Borrevannet, Horten, Norway, 0.10-m refractor + CCD + V filter; moonlight);
13.74, 12.2, 2'.1 (J. Qvam, Borrevannet, Horten, Norway, 0.10-m refractor + CCD + V filter; moonlight);
13.05, 11.3:, 2'.0 (J. J. Gonzalez, Leon, Spain, 0.20-m reflector; after moonset);
12.74, 12.2, 1'.2 (M. Lehky, Hradec Kralove, Czech Republic, 0.42-m reflector);
10.96, 12.6, 1'.5 (M. L. Paradowski, Dabrowa-West Polesie, Poland, 0.20-m reflector);
10.81, 12.3, 1'.6 (J. Qvam, Borrevannet, Horten, Norway, 0.10-m refractor + CCD + V filter; moonlight);
10.76, 12.3, 1'.1 (M. Lehky, Hradec Kralove, Czech Republic, 0.42-m reflector);
9.91, 11.6, 1'.7 (J. J. Gonzalez, Leon, Spain, 0.20-m reflector);
9.76, 12.2, 0'.9 (W. Hasubick, Buchloe, Germany, 44-cm reflector);
8.74, 12.5, 1'.1 (M. Lehky, Hradec Kralove, Czech Republic, 0.42-m reflector);
6.96, 12.2, 1'.5 (J. J. Gonzalez, Leon, Spain, 0.20-m reflector);
4.89, 12.8, 1'.2 (J. J. Gonzalez, Asturias, Spain, 0.20-m reflector);
3.97, 15.0, +1' (A. Baransky, Lisnyky, Ukraine, 0.70-m reflector + CCD);
3.86, 13.5, 0'.7 (V. Nevski, Vitebsk, Belarus, 0.3-m reflector);
3.76, 12.9, 0'.3 (W. Hasubick, Buchloe, Germany, 44-cm reflector);
3.74, 13.3, 0'.8 (M. Lehky, Hradec Kralove, Czech Republic, 0.42-m reflector);
COMET C/2008 E1 (Catalina)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2008
Mar. 6.77, 17.6, +0'.2 (A. Baransky, Lisnyky, Ukraine, 0.70-m reflector + CCD);
COMET C/2008 G1 (Gibbs)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2008
May 5.96, 18.5, +0.2' (A. Baransky, Lisnyky, Ukraine, 0.70-m reflector + CCD);
COMET C/2008 H1 (LINEAR)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2008
Apr. 26.92, 17.2, 0'.3 (V. Nevski, Vitebsk, Belarus, 0.30-m reflector + CCD);
21.97, 17.1, 0'.3 (V. Nevski, Vitebsk, Belarus, 0.30-m reflector + CCD);
COMET C/2008 J1 (Boattini)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2008
May 5.98, 14.0, +0.2' (A. Baransky, Lisnyky, Ukraine, 0.70-m reflector + CCD);
COMET 2P/Encke
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2007
May 26.33, 10.5:, -- (A. Amorim, Florianopolis, Brazil, 0.18-m reflector);
23.75, 9.6, 4' (D. A. J. Seargent, The Entrance, N.S.W., 25x100 binoculars);
16.90, 9.0, 3'.5 (A. Pearce, Nedlands, W. Australia, 0.20-m reflector);
14.90, 8.4, 3'.8 (A. Pearce, Nedlands, W. Australia, 0.20-m reflector);
13.90, 8.1, 4' (A. Pearce, Nedlands, W. Australia, 0.20-m reflector);
9.35, 7.8, 3' (A. Amorim, Florianopolis, Brazil, 20x80 binoculars; moonlight);
COMET 7P/Pons-Winnecke
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2008
Mar. 25.86, 19.5, -- (G. Sostero and E. Guido, Remanzacco, Italy, 0.45-m reflector + CCD; stellar);
COMET 8P/Tuttle
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2008
May 4.93, 10.8, 5' (M. Goiato, Aracatuba, Brasil, 0.22-m reflector);
1.42, 10.5, 2' (S. Rae, Tauranga, New Zealand, 0.11-m reflector);
Apr. 27.93, 10.5, 5' (M. Goiato, Aracatuba, Brasil, 0.22-m reflector);
26.94, 10.4, 5' (M. Goiato, Aracatuba, Brasil, 0.22-m reflector);
25.92, 10.4:, -- (A. Amorim, Florianopolis, Brazil, 0.18-m reflector);
24.98, 10.4:, -- (A. Amorim, Florianopolis, Brazil, 0.18-m reflector);
23.94, 10.2, 7' (M. Goiato, Aracatuba, Brasil, 0.22-m reflector);
18.96, 9.8, 6' (M. Goiato, Aracatuba, Brasil, 0.22-m reflector; moonlight);
18.00, 9.5:, -- (A. Amorim, Florianopolis, Brazil, 0.18-m reflector; moonlight);
17.95, 10.0, 4' (M. Goiato, Aracatuba, Brasil, 0.22-m reflector; moonlight);
16.98, 9.8, 6' (M. Goiato, Aracatuba, Brasil, 0.22-m reflector; moonlight);
14.95, 9.5, 3' (A. Amorim, Florianopolis, Brazil, 0.18-m reflector; moonlight);
11.93, 9.2, 8' (M. Goiato, Aracatuba, Brasil, 0.22-m reflector);
10.97, 9.5, -- (A. Amorim, Florianopolis, Brazil, 0.18-m reflector);
8.95, 9.2, 4' (A. Amorim, Florianopolis, Brazil, 0.18-m reflector);
7.93, 8.8, 4' (A. Amorim, Florianopolis, Brazil, 20x80 binoculars);
5.96, 8.9, 8' (M. Goiato, Aracatuba, Brazil, 0.22-m reflector);
5.92, 8.8, 4' (A. Amorim, Florianopolis, Brazil, 20x80 binoculars);
4.98, 8.8, 10' (M. Goiato, Aracatuba, Brazil, 0.22-m reflector);
2.41, 8.9, 6' (M. Mattiazzo, Castlemaine, Victoria, 25x100 binoculars);
1.96, 8.4, 6' (A. Amorim, Florianopolis, Brazil, 20x80 binoculars);
Mar. 31.43, 8.9, 5' (M. Mattiazzo, Castlemaine, Victoria, 0.2-m reflector);
31.02, 8.4, 5' (A. Amorim, Florianopolis, Brazil, 20x80 binoculars);
30.99, 8.6, 10' (M. Goiato, Aracatuba, Brazil, 0.22-m reflector);
29.98, 8.6, 8' (M. Goiato, Aracatuba, Brazil, 0.22-m reflector);
29.95, 8.1, 5' (J. G. de S. Aguiar, Joaquim Egidio, Brazil, 25x100 binoculars);
29.07, 8.2, -- (A. Amorim, Florianopolis, Brazil, 20x80 binoculars);
28.97, 8.6, 8' (M. Goiato, Aracatuba, Brazil, 0.22-m reflector);
26.96, 8.3, 8' (M. Goiato, Aracatuba, Brazil, 7x50 binoculars);
26.94, 7.9, 7' (A. Amorim, Florianopolis, Brazil, 20x80 binoculars);
25.96, 8.2, 10' (M. Goiato, Aracatuba, Brazil, 7x50 binoculars);
23.97, 8.1, 8' (M. Goiato, Aracatuba, Brazil, 20x80 binoculars);
20.95, 7.9:, 8' (M. Goiato, Aracatuba, Brazil, 20x80 binoculars; moonlight);
18.01, 7.8, 10' (M. Goiato, Aracatuba, Brazil, 20x80 binoculars; moonlight);
16.99, 7.6, 5' (A. Amorim, Florianopolis, Brazil, 20x80 binoculars; moonlight);
16.97, 7.8, 10' (M. Goiato, Aracatuba, Brazil, 20x80 binoculars; moonlight);
13.97, 7.4, -- (A. Amorim, Florianopolis, Brazil, 10x50 binoculars; moonlight);
12.42, 7.5, 10' (S. Rae, Tauranga, New Zealand, 10x50 binoculars);
11.38, 7.6, 8' (S. Rae, Tauranga, New Zealand, 10x50 binoculars);
9.95, 7.5, 8' (A. Amorim, Florianopolis, Brazil, 10x50 binoculars);
9.42, 7.4, 7'.0 (J. Drummond, Gisborne, New Zealand, 15x70 binoculars);
8.97, 7.6, 10' (M. Goiato, Aracatuba, Brazil, 7x50 binoculars);
8.96, 7.5, 10' (A. Amorim, Florianopolis, Brazil, 10x50 binoculars);
8.05, 7.5, 8' (A. Amorim, Florianopolis, Brazil, 20x80 binoculars);
7.96, 7.6, 10' (M. Goiato, Aracatuba, Brazil, 20x80 binoculars);
6.98, 7.3, 6' (J. G. de S. Aguiar, Campinas, Brazil, 25x100 binoculars);
6.98, 7.3, 12' (A. Amorim, Florianopolis, Brazil, 10x50 binoculars);
6.00, 7.6, 10' (M. Goiato, Aracatuba, Brazil, 7x50 binoculars);
5.98, 7.3, 6' (J. G. de S. Aguiar, Campinas, Brazil, 25x100 binoculars);
5.96, 7.3, 12' (A. Amorim, Florianopolis, Brazil, 10x50 binoculars);
5.10, 7.6, 7' (W. Robledo, Alto del Fierro, Argentina, 0.20-m reflector);
4.98, 7.3, 6' (J. G. de S. Aguiar, Campinas, Brazil, 25x100 binoculars);
4.96, 7.3, 12' (A. Amorim, Florianopolis, Brazil, 10x50 binoculars);
4.96, 7.6, 10' (M. Goiato, Aracatuba, Brazil, 7x50 binoculars);
4.00, 7.6, 10' (M. Goiato, Aracatuba, Brazil, 7x50 binoculars);
3.98, 7.2, 6' (J. G. de S. Aguiar, Campinas, Brazil, 25x100 binoculars);
2.99, 7.2, 6' (J. G. de S. Aguiar, Campinas, Brazil, 25x100 binoculars);
2.97, 7.5, 8' (M. Goiato, Aracatuba, Brazil, 7x50 binoculars);
2.38, 7.2, 10' (S. Rae, Tauranga, New Zealand, 10x50 binoculars);
2.00, 7.5, 10' (W. Souza, Sao Paulo, Brazil, 11x80 binoculars; moonlight interference);
1.99, 7.5, 8' (M. Goiato, Aracatuba, Brazil, 7x50 binoculars);
1.99, 7.1, 8' (J. G. de S. Aguiar, Campinas, Brazil, 25x100 binoculars);
Feb. 28.99, 7.1, 8' (J. G. de S. Aguiar, Campinas, Brazil, 25x100 binoculars);
28.39, 7.3, 8' (S. Rae, Tauranga, New Zealand, 10x50 binoculars);
27.98, 7.0, 8' (J. G. de S. Aguiar, Campinas, Brazil, 25x100 binoculars);
27.15, 7.6, 4'.8 (J. Shanklin, Rothera station, Antarctica, 0.09-m refractor);
26.98, 7.4, 8' (M. Goiato, Aracatuba, Brazil, 7x50 binoculars);
26.98, 7.0, 8' (J. G. de S. Aguiar, Campinas, Brazil, 25x100 binoculars);
26.38, 7.2, 10' (S. Rae, Tauranga, New Zealand, 10x50 binoculars);
26.01, 7.4, 8' (M. Goiato, Aracatuba, Brazil, 7x50 binoculars);
25.99, 6.9, 8' (J. G. de S. Aguiar, Campinas, Brazil, 25x100 binoculars);
25.99, 7.1, -- (A. Amorim, Florianopolis, Brazil, 10x50 binoculars; clouds interfering);
24.98, 7.4, 8' (M. Goiato, Aracatuba, Brazil, 7x50 binoculars);
24.97, 7.0, 8' (A. Amorim, Florianopolis, Brazil, 10x50 binoculars; clouds interfering);
19.98, 7.0, 5' (A. Amorim, Florianopolis, Brazil, 20x80 binoculars, moonlight);
19.97, 7.2, 7' (M. Goiato, Aracatuba, Brasil, 7x50 binoculars; moonlight);
18.99, 7.2, 7' (M. Goiato, Aracatuba, Brasil, 7x50 binoculars; moonlight interference);
18.97, 6.9, 10' (A. Amorim, Florianopolis, Brazil, 10x50 binoculars, moonlight);
18.01, 6.9, 8' (A. Amorim, Florianopolis, Brazil, 10x50 binoculars, moonlight);
16.97, 6.9, -- (A. Amorim, Florianopolis, Brazil, 10x50 binoculars; clouds interfering);
15.98, 6.8, -- (A. Amorim, Florianopolis, Brazil, 7x50 binoculars; clouds interfering);
13.97, 7.0, 10' (M. Goiato, Aracatuba, Brazil, 7x50 binoculars; moonlight, clouds);
13.97, 6.7, 10' (A. Amorim, Florianopolis, Brazil, 10x50 binoculars);
12.40, 6.9, 9' (S. Rae, Tauranga, New Zealand, 8x22 binoculars);
11.99, 6.9, 12' (Jose G. de S. Aguiar, Campinas, Brazil, 25x100 binocular).
11.38, 7.1, 9' (S. Rae, Tauranga, New Zealand, 8x22 binoculars);
10.97, 7.0, 10' (M. Goiato, Aracatuba, Brazil, 7x50 binoculars);
9.98, 6.8, 10' (Jose G. de S. Aguiar, Campinas, Brazil, 25x100 binocular).
9.00, 6.9, 10' (M. Goiato, Aracatuba, Brazil, 7x50 binoculars);
8.98, 6.8, 10' (Jose G. de S. Aguiar, Campinas, Brazil, 25x100 binocular).
8.97, 6.7, 10' (A. Amorim, Florianopolis, Brazil, 10x50 binoculars);
8.38, 6.9, 9' (S. Rae, Tauranga, New Zealand, 8x22 binoculars);
8.04, 6.9, 10' (M. Goiato, Aracatuba, Brasil, 7x50 binoculars);
7.99, 6.7, 10' (Jose G. de S. Aguiar, Campinas, Brazil, 25x100 binocular).
7.49, 7.1, -- (D. A. J. Seargent, Cowra, NSW, Australia, 6x35 binoculars);
7.39, 6.8, 10' (S. Rae, Tauranga, New Zealand, 8x22 binoculars);
7.00, 6.7, 10' (A. Amorim, Florianopolis, Brazil, 10x50 binoculars);
6.39, 6.8, 9' (S. Rae, Tauranga, New Zealand, 10x50 binoculars);
6.01, 6.7, 10' (A. Amorim, Florianopolis, Brazil, 10x50 binoculars);
5.99, 6.9, 10' (M. Goiato, Aracatuba, Brazil, 7x50 binoculars);
5.47, 6.8, -- (D. A. J. Seargent, Cowra, NSW, Australia, 6x35 binoculars; hazy, high clouds);
5.39, 6.9, 9' (S. Rae, Tauranga, New Zealand, 10x50 binoculars);
5.12, 7.0, 10' (W. Robledo, El Condor, Argentina, 0.05-m refractor);
4.98, 6.7, 12' (J. G. de S. Aguiar, Campinas, Brazil, 25x100 binoculars);
4.97, 6.8, 10' (M. Goiato, Aracatuba, Brazil, 7x50 binoculars);
3.97, 6.8, 9' (M. Goiato, Aracatuba, Brazil, 7x50 binoculars);
2.99, 6.6, 10' (A. Amorim, Florianopolis, Brazil, 10x50 binoculars);
1.98, 6.8, 9' (M. Goiato, Aracatuba, Brazil, 7x50 binoculars);
1.98, 6.6, 10' (A. Amorim, Florianopolis, Brazil, 10x50 binoculars);
1.43, 6.8, 9' (S. Rae, Tauranga, New Zealand, 10x50 binoculars);
1.08, 6.7, 10' (M. Goiato, Aracatuba, Brasil, 7x50 binoculars);
COMET 17P/Holmes
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2008
Apr. 25.85, 6.0:, & 60' (M. L. Paradowski, Dabrowa, Poland, 7x50 binoculars);
23.92, [6.2, ! 60' (J. J. Gonzalez, Leon, Spain, 6x50 monocular);
3.90, 5.4, 60' (J. J. Gonzalez, Asturias, Spain, 4x30 monocular);
Mar. 31.82, 5.5, 50' (C. Labordena, Castellon, Spain, 4x30 binoculars);
30.87, 5.2, 60' (J. J. Gonzalez, Asturias, Spain, 4x30 monocular);
29.81, 7.0, 12' (U. Pilz, Leipzig, Germany, 32-cm reflector);
29.81, 6.0:, 50' (A. Novichonok, Konchezero, Russia, 7x50 binoculars);
28.93, 5.2, 60' (J. J. Gonzalez, Asturias, Spain, 4x30 monocular);
26.95, 5.8, 60' (M. Goiato, Aracatuba, Brazil, 7x50 binoculars);
26.80, 5.5:, & 50' (M. L. Paradowski, Dabrowa, Poland, 7x35 binoculars; clouds);
22.73, 5.5:, -- (A. Novichonok, Kondopoga, Russia, 8x30 binoculars; light pollution);
10.93, 4.7, 70' (J. J. Gonzalez, Asturias, Spain, 4x30 monocular);
9.83, 5.0:, & 60' (M. L. Paradowski, Dabrowa-West Polesie, Poland, 7x35 binoculars; haze);
8.76, 4.7, 40' (A. Novichonok, Konchezero, Russia, 7x50 binoculars);
6.98, 4.8, 55' (J. J. Gonzalez, Asturias, Spain, 4x30 monocular);
6.95, 5.2, & 65' (A. Pereira, Cabo da Roca, Portugal, 5x22 monocular);
5.89, 4.6, 70' (J. J. Gonzalez, Leon, Spain, 4x30 monocular);
5.86, 5.0, & 80' (A. Pereira, Cabo da Roca, Portugal, 5x22 monocular);
5.82, 4.7:, & 50' (M. Meyer, Limburg, Germany, 3.5x15 opera glasses);
5.45, 4.7, 80' (S. Yoshida, Ibaraki, Japan, 0.05-m refractor);
5.42, 5.5:, & 70' (Y. Nagai, Gunma, Japan, 7x35 binoculars);
4.91, 5.1, & 65' (A. Pereira, Cabo da Roca, Portugal, 5x22 monocular);
4.76, 5.8, 40' (U. Pilz, Leipzig, Germany, 10x50 binoculars);
3.99, 5.2, 60' (M. Goiato, Aracatuba, Brazil, 7x50 binoculars);
2.76, 4.7:, & 70' (M. L. Paradowski, Dabrowa-West Polesie, Poland, 7x35 binoculars; clouds);
1.88, 4.4, 70' (J. J. Gonzalez, Leon, Spain, 4x30 monocular);
1.86, 4.9, & 65' (A. Pereira, Cabo da Roca, Portugal, 5x22 monocular);
1.51, 4.2:, 80' (Y. Nagai, Gunma, Japan, 300-mm camera lens + CCD);
Feb. 29.96, 4.9, & 36' (A. Pereira, Cabo da Roca, Portugal, 5x22 monocular; star of mag 6.6 in coma);
27.77, 4.5, 90' (K. Hornoch, Vohancice, Czech Republic, 1x50 monocular);
26.79, 4.8, 60' (M. Lehky, Hradec Kralove, Czech Republic, binoculars 10x50);
26.77, 4.4, 90' (K. Hornoch, Vohancice, Czech Republic, 1x50 monocular);
26.00, 5.0, 40' (M. Goiato, Aracatuba, Brazil, 7x50 binoculars);
25.86, 4.8, & 60' (A. Pereira, Cabo da Roca, Portugal, 5x22 monocular);
25.79, 4.8, 70' (M. Lehky, Hradec Kralove, Czech Republic, binoculars 10x50);
24.79, 4.4, 90' (M. Lehky, Hradec Kralove, Czech Republic, naked eye);
24.79, 5.0, 30' (U. Pilz, Leipzig, Germany, 10x50 binoculars);
24.75, 4.6, 90' (M. L. Paradowski, Dabrowa-West Polesie, Poland, 3x24 monocular);
22.83, 4.3, 70' (J. J. Gonzalez, Leon, Spain, naked eye);
16.81, 4.4, 60' (M. Lehky, Hradec Kralove, Czech Republic, binoculars 10x50);
13.02, 4.1, 70' (J. J. Gonzalez, Leon, Spain, 4x30 monocular; after moonset);
12.77, 4.2, 70' (M. Lehky, Hradec Kralove, Czech Republic, binoculars 10x50);
12.16, 4.6, & 60' (D. W. E. Green, Hubbardston, MA, U.S.A., 12x50 monocular; after moonset);
10.98, 4.6, 70' (M. L. Paradowski, Dabrowa-West Polesie, Poland, 3x24 monocular);
10.83, 3.8, 80' (M. Lehky, Hradec Kralove, Czech Republic, naked eye);
10.77, 4.2:, & 80' (M. Meyer, Limburg, Germany, 3.5x15 opera glasses);
10.02, 4.6, & 90' (A. Pereira, Cabo da Roca, Portugal, 5x22 monocular);
9.89, 3.9, 70' (J. J. Gonzalez, Leon, Spain, 4x30 monocular);
9.82, 4.1, & 90' (B. H. Granslo, Haagaar, Eina, Norway, 3x18 monocular);
9.81, 3.8, 90' (M. Lehky, Zamberk, Czech Republic, naked eye);
9.77, 4.0:, & 80' (M. Meyer, Limburg, Germany, 3.5x15 opera glasses);
9.74, 4.5, 60' (U. Pilz, Leipzig, Germany, 8x24 binoculars);
9.44, 4.7, 80' (D. A. J. Seargent, Cowra, NSW, Australia, 2x25 binoculars);
8.97, 4.7, & 90' (A. Pereira, Cabo da Roca, Portugal, 5x22 monocular);
8.90, 5.0:, & 50' (M. L. Paradowski, Dabrowa-West Polesie, Poland, 3x24 monocular; clouds);
8.82, 4.3, 70' (T. Scarmato, Calabria, Italy, naked eye);
8.77, 3.8, 80' (M. Lehky, Hradec Kralove, Czech Republic, naked eye);
7.97, 4.6, & 85' (A. Pereira, Cabo da Roca, Portugal, 5x22 monocular);
7.47, 4.6:, & 70' (Y. Nagai, Gunma, Japan, 3x18 monocular);
7.44, 4.7, -- (D. A. J. Seargent, Cowra, NSW, Australia, 2x25 binoculars);
6.95, 4.6, & 70' (A. Pereira, Cabo da Roca, Portugal, 5x22 monocular);
6.94, 3.8, 70' (J. J. Gonzalez, Leon, Spain, 4x30 monocular);
5.76, 4.4:, &70' (M. L. Paradowski, Dabrowa-West Polesie, Poland, 3x24 monocular; haze);
4.98, 4.6, 80' (M. Goiato, Aracatuba, Brazil, 7x50 binoculars);
4.94, 3.9, 70' (J.J. Gonzalez, Asturias, Spain, 4x30 monocular);
4.87, 4.5, & 80' (A. Pereira, Cabo da Roca, Portugal, 5x22 monocular);
4.77, 4.4:, &70' (M. L. Paradowski, Dabrowa-West Polesie, Poland, 3x24 monocular; clouds);
3.82, 4.2, 60' (T. Scarmato, Calabria, Italy, naked eye);
3.79, 3.6, 90' (M. Lehky, Hradec Kralove, Czech Republic, naked eye);
3.78, 4.4, 90' (M. L. Paradowski, Dabrowa-West Polesie, Poland, 3x24 monocular);
3.72, 4.8, 70' (V. Nevski, Vitebsk, Belarus, naked eye);
2.84, 4.3, & 70' (A. Pereira, Cabo da Roca, Portugal, 5x22 monocular);
2.82, 4.0, 60' (T. Scarmato, Calabria, Italy, naked eye);
2.82, 4.6, 40' (U. Pilz, Leipzig, Germany, naked eye);
2.81, 3.9, 70' (J.J. Gonzalez, Asturias, Spain, 4x30 monocular);
2.79, 3.7, 80' (M. Lehky, Hradec Kralove, Czech Republic, naked eye);
2.77, 4.3, -- (W. Hasubick, Buchloe, Germany, naked eye);
2.75, 4.2:, 70' (M. Meyer, Limburg, Germany, 3.5x15 opera glasses);
1.79, 4.4:, & 60' (M. L. Paradowski, Dabrowa-West Polesie, Poland, 3x24 monocular; clouds);
1.43, 3.9, 82' (Y. Nagai, Gunma, Japan, 135-mm camera lens + CCD);
COMET 22P/Kopff
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2008
Mar. 27.92, 18.9, 0'.2 (V. Nevski, Vitebsk, Belarus, 0.30-m reflector + CCD);
7.95, 17.6, 0'.2 (V. Nevski, Vitebsk, Belarus, 0.30-m reflector + CCD);
COMET 26P/Grigg-Skjelerup
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2008
Apr. 12.25, 11.3, 4' (M. Goiato, Aracatuba, Brasil, 0.22-m reflector);
12.17, 11.4, 2'.5 (J. J. Gonzalez, Palencia, Spain, 0.20-m reflector);
6.18, 11.3, 2'.8 (J. J. Gonzalez, Asturias, Spain, 0.20-m reflector);
5.33, 11.9, 2' (M. Goiato, Aracatuba, Brazil, 0.22-m reflector);
Mar. 22.29, 11.7:, 3' (M. Goiato, Aracatuba, Brazil, 0.22-m reflector; moonlight);
9.22, [12.8, -- (A. Amorim, Florianopolis, Brazil, 0.18-m reflector);
COMET 29P/SCHWASSMANN-WACHMANN
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2008
Mar. 5.91, 12.7, 1'.5 (J. J. Gonzalez, Leon, Spain, 0.20-m reflector);
5.51, 13.3, 1'.3 (S. Yoshida, Ibaraki, Japan, 0.40-m reflector);
1.92, 12.5, 2'.0 (J. J. Gonzalez, Leon, Spain, 0.20-m reflector);
Feb. 13.95, 11.6, 2'.8 (J. Qvam, Borrevannet, Horten, Norway, 0.10-m refractor + CCD + V filter; moonlight);
12.81, 12.9, 1'.8 (M. Lehky, Hradec Kralove, Czech Republic, 0.42-reflector);
11.92, 11.8, 2'.3 (A. Baransky, Lisnyky, Ukraine, 0.15-m refractor);
10.94, 11.6, 2'.0 (M. L. Paradowski, Dabrowa-West Polesie, Poland, 0.20-m reflector);
9.93, 11.3:, 2'.0 (J. J. Gonzalez, Leon, Spain, 0.20-m reflector);
7.47, 12.0:, 2' (Y. Nagai, Gunma, Japan, 0.32-m reflector);
7.08, 11.5:, 2'.0 (J. J. Gonzalez, Leon, Spain, 0.20-m reflector);
6.99, 12.5:, -- (A. Amorim, Florianopolis, Brazil, 0.18-m reflector);
5.98, 12.5:, -- (A. Amorim, Florianopolis, Brazil, 0.18-m reflector);
4.03, 11.8, 2' (A. Baransky, Lisnyky, Ukraine, 0.15-m refractor);
3.90, 13.6, 2'.0 (V. Nevski, Vitebsk, Belarus, 0.30-m reflector + CCD);
3.81, 11.8, 2'.3 (M. L. Paradowski, Dabrowa-West Polesie, Poland, 0.20-m reflector);
1.98, [12.0, -- (A. Amorim, Florianopolis, Brazil, 0.18-m reflector);
1.46, 11.2, 1'.7 (Y. Nagai, Gunma, Japan, 300-mm camera lens + CCD);
1.10, 12.3, 0.8' (M. Goiato, Aracatuba, Brasil, 0.22-m reflector);
COMET 44P/Reinmuth
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2007
Nov. 19.86, 16.5, +0'.3 (A. Baransky, Lisnyky, Ukraine, 0.70-m reflector + CCD);
Oct. 1.70, 16.9, +0'.2 (A. Baransky, Lisnyky, Ukraine, 0.70-m reflector + CCD);
COMET 46P/Wirtanen
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2008
Apr. 26.85, 12.1 (U. Pilz, Leipzig, Germany, 32-cm reflector);
25.91, 11.7, 2' (M. L. Paradowski, Dabrowa, Poland, 0.25-m reflector);
9.81, 14.6, +0'.4 (A. Baransky, Lisnyky, Ukraine, 0.70-m reflector + CCD);
5.95, 10.8, 2' (M. Goiato, Aracatuba, Brazil, 0.22-m reflector);
5.90, 11.0:, -- (A. Novichonok, Petrozavodsk, Russia, 25.4-cm reflector);
Mar. 31.81, 10.2, 4' (K. Hornoch, Vohancice, Czech Republic, 0.13-m reflector);
31.51, 10.8, 3'.2 (K. Yoshimoto, Yamaguchi, Japan, 0.25-m reflector);
30.96, 10.7, 2' (M. Goiato, Aracatuba, Brazil, 0.22-m reflector);
29.97, 10.6, 2' (M. Goiato, Aracatuba, Brazil, 0.22-m reflector);
29.94, 9.8, 4' (J. G. de S. Aguiar, Joaquim Egidio, Brazil, 25x100 binoculars);
29.87, 10.6, 3'.5 (A. Novichonok, Konchezero, Russia, 13-cm reflector);
29.83, 10.5, 3' (U. Pilz, Leipzig, Germany, 32-cm reflector);
28.99, 10.4, 4' (J. J. Gonzalez, Asturias, Spain, 0.20-m reflector);
26.90, 11.3, 3'.7 (J. Qvam, Borrevannet, Horten, Norway, 0.10-m refractor + CCD + V filter);
26.75, 10.5, 3' (A. Novichonok, Konchezero, Russia, 13-cm reflector);
24.85, 13.3, +1' (A. Baransky, Lisnyky, Ukraine, 0.70-m reflector + CCD);
24.49, 10.5, 4'.2 (K. Yoshimoto, Yamaguchi, Japan, 0.25-m reflector);
23.95, 9.8, 4' (M. Goiato, Aracatuba, Brazil, 0.22-m reflector);
23.81, 10.6, 2'.5 (V. Nevski, Vitebsk, Belarus, 0.3-m reflector);
22.72, [9.4, -- (A. Novichonok, Kondopoga, Russia, 6-cm refractor; light pollution);
17.84, 10.5, 5'.6 (J. Qvam, Borrevannet, Horten, Norway, 0.10-m refractor + CCD + V filter; moonlight);
16.95, 9.8, 4' (M. Goiato, Aracatuba, Brazil, 0.22-m reflector; moonlight);
9.96, 9.7, 5' (M. Goiato, Aracatuba, Brazil, 0.22-m reflector);
9.80, 9.7, 5'.0 (M. L. Paradowski, Dabrowa-West Polesie, Poland, 0.20-m reflector; haze);
8.95, 9.7, 5' (M. Goiato, Aracatuba, Brazil, 0.22-m reflector);
6.82, 9.2, 5' (T. Karhula, Virsbo, Sweden, 25x100 binoculars)
5.95, 10.0:, -- (A. Amorim, Florianopolis, Brazil, 0.18-m reflector);
5.87, 9.0, 5' (J. J. Gonzalez, Leon, Spain, 25x100 binoculars);
5.81, 9.0, 5'.0 (M. Meyer, Limburg, Germany, 15-cm refractor);
5.46, 9.3, 6'.5 (S. Yoshida, Ibaraki, Japan, 0.40-m reflector);
5.42, 9.3, 5' (Y. Nagai, Gunma, Japan, 20x100 binoculars);
4.95, [9.5, -- (A. Amorim, Florianopolis, Brazil, 0.18-m reflector);
4.95, 9.6, 5' (M. Goiato, Aracatuba, Brazil, 0.22-m reflector);
4.81, 10.0, 6'.1 (J. Qvam, Borrevannet, Horten, Norway, 0.10-m refractor + CCD + V filter);
4.77, 9.0, 3' (U. Pilz, Leipzig, Germany, 32-cm reflector);
3.86, 10.1, 6'.1 (J. Qvam, Borrevannet, Horten, Norway, 0.10-m refractor + CCD + V filter);
3.81, 9.0, 4'.6 (M. Meyer, Limburg, Germany, 15-cm refractor);
2.95, 9.6, 5' (M. Goiato, Aracatuba, Brazil, 0.22-m reflector);
2.84, 10.1, 5'.6 (J. Qvam, Borrevannet, Horten, Norway, 0.10-m refractor + CCD + V filter);
1.96, 9.7, 5' (M. Goiato, Aracatuba, Brazil, 0.22-m reflector);
1.86, 8.9, 6' (J. J. Gonzalez, Leon, Spain, 25x100 binoculars);
Feb. 27.76, 9.2, 7' (K. Hornoch, Vohancice, Czech Republic, 10x80 binoculars);
26.97, 9.6, 6' (M. Goiato, Aracatuba, Brazil, 0.22-m reflector);
26.76, 9.2, 6' (K. Hornoch, Vohancice, Czech Republic, 10x80 binoculars);
25.77, 9.6, -- (U. Pilz, Leipzig, Germany, 32-cm reflector);
24.96, 9.5, -- (A. Amorim, Florianopolis, Brazil, 0.18-m reflector);
24.78, 8.5, 4'.8 (W. Hasubick, Buchloe, Germany, 9x63 binoculars);
24.77, 8.8, 5'.9 (M. Meyer, Limburg, Germany, 15-cm refractor);
24.77, 9.3, 4'.5 (R. Haver, Frasso Sabino, Italy, 20x100 binoculars);
24.77, 9.2, 6'.6 (M. L. Paradowski, Dabrowa-West Polesie, Poland, 0.20-m reflector);
22.80, 8.7, 6' (J. J. Gonzalez, Leon, Spain, 25x100 binoculars);
19.96, 9.7, 5' (M. Goiato, Aracatuba, Brasil, 0.22m reflector; moonlight);
16.74, 8.8, 4' (M. Lehky, Hradec Kralove, Czech Republic, binoculars 25x100);
15.78, 9.2, 7'.0 (J. Qvam, Borrevannet, Horten, Norway, 0.10-m refractor + CCD + V filter; moonlight);
12.77, 8.8, 4' (A. Diepvens, Balen, Belgium, 0.15-m refractor);
10.96, 9.2, 5' (M. Goiato, Aracatuba, Brazil, 0.22-m reflector);
10.84, 8.2, 10' (M. L. Paradowski, Dabrowa-West Polesie, Poland, 0.20-m reflector);
10.79, 9.2, 7'.0 (J. Qvam, Borrevannet, Horten, Norway, 0.10-m refractor + CCD + V filter; moonlight);
10.76, 8.8, 6' (M. Meyer, Limburg, Germany, 15-cm refractor);
10.75, 8.7, 5' (M. Lehky, Hradec Kralove, Czech Republic, binoculars 25x100);
9.88, 8.5, 7' (J. J. Gonzalez, Leon, Spain, 25x100 binoculars);
9.82, 8.6, 6' (B. H. Granslo, Haagaar, Eina, Norway, 0.07-m refractor);
9.77, 9.6, 3'.7 (W. Hasubick, Buchloe, Germany, 44-cm reflector);
9.77, 9.1, 3' (A. Diepvens, Balen, Belgium, 0.15-m refractor);
9.76, 8.6, 6' (M. Meyer, Limburg, Germany, 15-cm refractor);
9.74, 8.9, 5' (U. Pilz, Leipzig, Germany, 8-cm refractor);
8.97, 9.1, 6' (M. Goiato, Aracatuba, Brazil, 0.22-m reflector);
8.97, 9.3:, -- (A. Amorim, Florianopolis, Brazil, 0.18-m reflector, clouds interference);
8.76, 8.7, 5' (M. Lehky, Hradec Kralove, Czech Republic, binoculars 25x100);
8.76, 9.1, 3' (A. Diepvens, Balen, Belgium, 0.15-m refractor);
8.76, 8.7, 5'.5 (M. Meyer, Limburg, Germany, 15-cm refractor);
7.76, 8.8, 7' (M. Meyer, Limburg, Germany, 15-cm refractor);
7.46, 9.3, 4'.5 (Y. Nagai, Gunma, Japan, 0.32-m reflector);
6.98, 9.2, 4' (A. Amorim, Florianopolis, Brazil, 0.18-m reflector);
6.92, 8.3, 7' (J. J. Gonzalez, Leon, Spain, 10x50 binoculars);
6.77, 9.2, 3' (A. Diepvens, Balen, Belgium, 0.15-m refractor);
5.96, 9.0, 4' (A. Amorim, Florianopolis, Brazil, 0.18-m reflector);
5.78, 8.4:, 6'.3 (M. L. Paradowski, Dabrowa-West Polesie, Poland, 25x100 binoculars; haze);
4.92, 8.5, 7' (J. J. Gonzalez, Asturias, Spain, 25x100 binoculars);
3.80, 8.8, 6' (K. Hornoch, Ondrejov, Czech Republic, 0.05-m refractor);
3.78, 8.3, 6'.0 (M. L. Paradowski, Dabrowa-West Polesie, Poland, 0.20-m reflector; zodiacal light);
3.76, 8.9, 4'.5 (M. Lehky, Hradec Kralove, Czech Republic, 25x100 binoculars);
3.75, 9.9, 2'.9 (W. Hasubick, Buchloe, Germany, 44-cm reflector);
3.71, 8.8, 5'.5 (V. Nevski, Vitebsk, Belarus, 0.11-m binoculars);
2.81, 8.0, 4' (U. Pilz, Leipzig, Germany, 8-cm refractor);
2.80, 8.6, 7' (J. J. Gonzalez, Asturias, Spain, 25x100 binoculars);
2.74, 8.7, 7' (M. Meyer, Limburg, Germany, 15-cm refractor);
2.73, 9.1, 7'.0 (J. Qvam, Borrevannet, Horten, Norway, 0.10-m refractor + CCD + V filter);
1.96, 9.0, 3' (A. Amorim, Florianopolis, Brazil, 0.18-m reflector);
1.79, 9.7, 3' (A. Diepvens, Balen, Belgium, 0.15-m refractor);
COMET 49P/Arend-Rigaux
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2005
May 8.85, 14.5, -- (J. Srba, Vsetin, Czech Republic, 6.3-cm reflector + CCD; stellar appearance);
4.46, [13.3, ! 0'.9 (S. Yoshida, Gunma, Japan, 40-cm reflector);
COMET 50P/Arend
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2008
Feb. 28.93, 16.5, 0'.3 (A. Baransky, Lisnyky, Ukraine, 0.70-m reflector + CCD);
10.76, 17.2, 0'.2 (V. Nevski, Vitebsk, Belarus, 0.30-m reflector + CCD);
Jan. 5.86, 16.3, +0'.3 (A. Baransky, Lisnyky, Ukraine, 0.70-m reflector + CCD);
4.50, 14.6, 0'.4 (S. Yoshida, Ibaraki, Japan, 0.40-m reflector);
2.82, 16.5, 0'.2 (V. Nevski, Vitebsk, Belarus, 0.30-m reflector + CCD);
COMET 65P/GUNN
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2008
Apr. 14.88, 16.9, 0'.2 (V. Nevski, Vitebsk, Belarus, 0.30-m reflector + CCD)
Mar. 27.88, 17.3, 0'.2 (V. Nevski, Vitebsk, Belarus, 0.30-m reflector + CCD);
7.92, 17.2, 0'.2 (V. Nevski, Vitebsk, Belarus, 0.30-m reflector + CCD);
Feb. 12.03, 16.9, +0'.3 (A. Baransky, Lisnyky, Ukraine, 0.70-m reflector + CCD);
Jan. 14.99, 16.9, 0'.2 (V. Nevski, Vitebsk, Belarus, 0.30-m reflector + CCD);
4.87, 17.3, 0'.2 (V. Nevski, Vitebsk, Belarus, 0.30-m reflector + CCD);
COMET 70P/Kojima
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2008
Apr. 25.87, 16.9, 0'.3 (V. Nevski, Vitebsk, Belarus, 0.30-m reflector + CCD);
Mar. 27.98, 16.4, 0'.4 (V. Nevski, Vitebsk, Belarus, 0.30-m reflector + CCD);
8.03, 16.4, 0'.2 (V. Nevski, Vitebsk, Belarus, 0.30-m reflector + CCD);
Jan. 3.19, 16.8, +0'.3 (A. Baransky, Lisnyky, Ukraine, 0.70-m reflector + CCD);
COMET 74P/Smirnova-Chernykh
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2008
Jan. 5.97, 17.2, +0'.3 (A. Baransky, Lisnyky, Ukraine, 0.70-m reflector + CCD);
4.87, 17.3, 0'.2 (V. Nevski, Vitebsk, Belarus, 0.30-m reflector + CCD);
2007
Nov. 19.97, 17.1, +0'.2 (A. Baransky, Lisnyky, Ukraine, 0.70-m reflector + CCD);
17.96, 17.3, 0'.2 (V. Nevski, Vitebsk, Belarus, 0.30-m reflector + CCD);
COMET 79P/du Toit-Hartley
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2008
Feb. 12.03, 17.6, +0'.3 (A. Baransky, Lisnyky, Ukraine, 0.70-m reflector + CCD);
Jan. 2.93, 18.0, 0'.2 (V. Nevski, Vitebsk, Belarus, 0.30-m reflector + CCD);
COMET 93P/Lovas
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2008
Mar. 5.48, 13.5, 1'.0 (S. Yoshida, Ibaraki, Japan, 0.40-m reflector);
Feb. 10.79, 13.9, 0'.5 (M. Lehky, Hradec Kralove, Czech Republic, 0.42-m reflector);
10.73, 15.1, 0'.3 (V. Nevski, Vitebsk, Belarus, 0.30-m reflector + CCD);
3.83, 13.8, 0'.7 (M. Lehky, Hradec Kralove, Czech Republic, 0.42-m reflector);
COMET 96P/Machholz
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2007
Nov. 2.78, [12.1, -- (J. Carvajal, Avila, Spain, 0.45-m reflector);
COMET 110P/Hartley
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2008
Apr. 14.81, 17.2, 0'.2 (V. Nevski, Vitebsk, Belarus, 0.30-m reflector + CCD)
Mar. 27.84, 16.2, 0'.3 (V. Nevski, Vitebsk, Belarus, 0.30-m reflector + CCD);
24.89, 15.0, +0'.3 (A. Baransky, Lisnyky, Ukraine, 0.70-m reflector + CCD);
5.52, [14.2, ! 0'.4 (S. Yoshida, Ibaraki, Japan, 0.40-m reflector);
Feb. 10.88, 14.4, 0'.4 (M. Lehky, Hradec Kralove, Czech Republic, 0.42-m reflector);
COMET 124P/Mrkos
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2008
Apr. 21.85, 16.7, 0'.2 (V. Nevski, Vitebsk, Belarus, 0.30-m reflector + CCD);
9.87, 16.1, +0'.3 (A. Baransky, Lisnyky, Ukraine, 0.70-m reflector + CCD);
Mar. 27.90, 16.3, 0'.3 (V. Nevski, Vitebsk, Belarus, 0.30-m reflector + CCD);
20.10, 16.0, +0'.3 (A. Baransky, Lisnyky, Ukraine, 0.70-m reflector + CCD);
Feb. 26.08, 15.8, +0'.3 (A. Baransky, Lisnyky, Ukraine, 0.70-m reflector + CCD);
24.83, 14.0, 0'.5 (M. L. Paradowski, Dabrowa-West Polesie, Poland, 0.20-m reflector);
3.98, 17.2, 0'.1 (V. Nevski, Vitebsk, Belarus, 0.30-m reflector + CCD);
COMET 128P/Shoemaker-Holt
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2008
Jan. 5.07, 17.6, +0'.2 (A. Baransky, Lisnyky, Ukraine, 0.70-m reflector + CCD);
2007
Oct. 16.75, 18.8*, 0'.2 (M. Tsumura, Wakayama, Japan, 35-cm reflector + CCD);
Sep. 29.12, 18.1, +0'.2 (A. Baransky, Lisnyky, Ukraine, 0.70-m reflector + CCD);
COMET 136P/Muller
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2007
Oct. 11.49, 16.7*, 0'.3 (M. Tsumura, Wakayama, Japan, 35-cm reflector + CCD);
COMET 139P/Vaisala-Oterma
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2008
Jan. 4.92, [18.0, !0'.2 (A. Baransky, Lisnyky, Ukraine, 0.70-m reflector + CCD);
2007
Oct. 11.57, 17.4*, < 0'.15 (M. Tsumura, Wakayama, Japan, 35-cm reflector + CCD);
COMET 172P/Yeung
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2008
Feb. 12.13, 17.8, +0'.2 (A. Baransky, Lisnyky, Ukraine, 0.70-m reflector + CCD);
COMET 173P/Mueller
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2008
Feb. 11.99, 17.6, +0.3' (A. Baransky, Lisnyky, Ukraine, 0.70-m reflector + CCD);
COMET 179P/Jedicke
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2008
Jan. 4.92, 18.2, +0'.2 (A. Baransky, Lisnyky, Ukraine, 0.70-m reflector + CCD);
2007
Oct. 18.02, 17.5, +0'.2 (A. Baransky, Lisnyky, Ukraine, 0.70-m reflector + CCD);
COMET 180P/NEAT
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2008
Apr. 26.86, 16.8, 0'.3 (V. Nevski, Vitebsk, Belarus, 0.30-m reflector + CCD);
21.87, 16.5, 0'.3 (V. Nevski, Vitebsk, Belarus, 0.30-m reflector + CCD);
Feb. 26.11, 16.4, +0'.3 (A. Baransky, Lisnyky, Ukraine, 0.70-m reflector + CCD);
COMET 183P/Korlevic-Juric
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2008
Mar. 6.99, 17.6, 0'.2 (A. Baransky, Lisnyky, Ukraine, 0.70-m reflector + CCD);
COMET 187P/LINEAR
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2008
Apr. 26.88, 18.1, 0'.2 (V. Nevski, Vitebsk, Belarus, 0.30-m reflector + CCD);
COMET 188P/LINEAR-Mueller
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2008
Jan. 4.84, 16.3, +0'.2 (A. Baransky, Lisnyky, Ukraine, 0.70-m reflector + CCD);
4.75, 16.8, 0'.3 (V. Nevski, Vitebsk, Belarus, 0.30-m reflector + CCD);
COMET 189P/2007 N2 (NEAT)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2007
Aug. 5.96, 17.0, +0'.3 (A. Baransky, Lisnyky, Ukraine, 0.70-m reflector + CCD);
July 19.94, 15.8, +0'.4 (A. Baransky, Lisnyky, Ukraine, 0.70-m reflector + CCD);
17.95, 16.0, +0'.3 (A. Baransky, Lisnyky, Ukraine, 0.70-m reflector + CCD);
COMET 190P/Mueller
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2007
Dec. 5.58, 18.2*, 0'.2 (M. Tsumura, Wakayama, Japan, 35-cm reflector + CCD);
Sep. 22.07, 18.3, +0'.2 (A. Baransky, Lisnyky, Ukraine, 0.70-m reflector + CCD);
COMET 191P/McNaught
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2008
Jan. 2.77, 16.6, 0'.3 (V. Nevski, Vitebsk, Belarus, 0.30-m reflector + CCD);
2007
Dec. 9.49, 14.2, 0'.6 (S. Yoshida, Gunma, Japan, 0.40-m reflector);
8.64, 14.1, 0'.5 (S. Yoshida, Gunma, Japan, 0.40-m reflector);
Nov. 17.11, 14.0, 0'.4 (J. J. Gonzalez, Leon, Spain, 0.20-m reflector);
3.48, 15.3, 0'.8 (K. Yoshimoto, Hirao, Yamaguchi, Japan, 16-cm reflector + CCD);
Oct. 18.00, 15.7, +0'.4 (A. Baransky, Lisnyky, Ukraine, 0.70-m reflector + CCD);
11.69, 15.9*, 0'.4 (M. Tsumura, Wakayama, Japan, 35-cm reflector + CCD);
COMET 192P/Shoemaker-Levy
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2008
Feb. 3.76, 14.2, 0'.5 (W. Hasubick, Buchloe, Germany, 44-cm reflector);
3.75, 13.5:, 0'.8 (M. L. Paradowski, Dabrowa-West Polesie, Poland, 0.20-m reflector; zodiacal light; interference from 11th-mag star);
Jan. 27.82, 13.3, 0'.8 (J. J. Gonzalez, Leon, Spain, 0.20-m reflector);
16.75, 14.8, +0'.4 (A. Baransky, Lisnyky, Ukraine, 0.70-m reflector + CCD);
4.39, 13.4, 0'.6 (S. Yoshida, Ibaraki, Japan, 0.40-m reflector);
COMET 194P/LINEAR
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2008
Jan. 5.97, 17.8, +0'.3 (A. Baransky, Lisnyky, Ukraine, 0.70-m reflector + CCD);
COMET 197P/LINEAR
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2008
Apr. 9.95, 16.3, +0'.2 (A. Baransky, Lisnyky, Ukraine, 0.70-m reflector + CCD);
Mar. 28.00, 17.4, 0'.1 (V. Nevski, Vitebsk, Belarus, 0.30-m reflector + CCD);