Recent Comet Brightness Estimates
Selected recent magnitude estimates (often preliminary values!), as reported to the IAU Circulars and International Comet Quarterly for currently-observable comets are given below. NOTE: in 1997, we began adding select magnitudes from fainter comets from CCD astrometry reported to the Minor Planet Center, to make the list of comets below pretty complete for observable comets seen in the last couple of months, for the convenience of observers/readers who wish to know the most recent magnitude information on fainter comets. (Definitions of the "magnitude" and other terms regarding comets are available.)
- Contributors of observations for this Web page should read this first. (Contributors of web data are expected also to contribute complete information for ICQ archiving.)
- Further Helpful Hints
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 Indeed, it is not uncommon that photometric data listed below are actually withdrawn by observers (or the ICQ Editor) due to problems, and sometimes substantial changes are made to the magnitudes before publication in the ICQ.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, our Computation Facility took drastic measures on a couple of years ago to block e-mail from many e-mail extensions. Contributors of cometary observations to the ICQ, the CBAT, and the MPC need to be aware of this: if you do not have a .edu, .gov, or .org extension, your e-mail may not reach us (and therefore please read this). [8/17/98]
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 29P/Schwassmann-Wachmann. or 177P/Barnard.
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/2003 WT42 (LINEAR) Total-magnitude and coma-diameter estimates (visual unless otherwise noted): 2006 Dec. 22.82, 14.2, 0'.7 (S. Yoshida, Gunma, Japan, 0.40-m reflector); June 11.90, 15.0, +0'.5 (G. Sostero and E. Guido, Remanzacco, Italy, 25-cm reflector + CCD + Cousins R filter); May 18.85, 15.3, +0'.4 (T. Scarmato, Calabria, Italy, 25-cm reflector + CCD); 4.47, 12.8, 0'.8 (S. Yoshida, Gunma, Japan, 40-cm reflector); 3.99, 13.6, 1'.4 (M. Reszelski, Szamotuly-Galowo, Poland, 41-cm reflector); 3.85, 14.0, 0'.8 (M. Lehky, Hradec Kralove, Czech Republic, 42-cm reflector); 3.64, 13.3, 0'.9 (S. Yoshida, Gunma, Japan, 40-cm reflector); 2.48, 13.1, 1'.1 (S. Yoshida, Gunma, Japan, 40-cm reflector); 1.46, 12.8, 1'.0 (S. Yoshida, Gunma, Japan, 40-cm reflector); COMET C/2004 B1 (LINEAR) Total-magnitude and coma-diameter estimates (visual unless otherwise noted): 2006 Sep. 19.60, 16.5*, 0'.3 (M. Tsumura, Wakayama, Japan, 35-cm reflector + CCD); 1.60, 16.3*, -- (M. Tsumura, Wakayama, Japan, 35-cm reflector + CCD); 1.48, 16.1*, -- (M. Tsumura, Wakayama, Japan, 35-cm reflector + CCD); Aug. 24.94, [15.1, 1' (J. Carvajal, Avila, Spain, 45-cm reflector); 14.48, 16.2*, 0'.3 (M. Tsumura, Wakayama, Japan, 35-cm reflector + CCD); COMET C/2005 E2 (McNaught) Total-magnitude and coma-diameter estimates (visual unless otherwise noted): 2007 Feb. 17.89, 16.1, 0'.6 (E. Brezina and J. Srba, Vsetin, Czech Republic, 0.15-m reflector + CCD + R filter); 2006 Oct. 31.78, 14.2, 0'.6 (S. Yoshida, Gunma, Japan, 40-cm reflector); 31.11, 13.7, 0'.8 (M. Reszelski, Szamotuly-Galowo, Poland, 41.0-cm reflector); 9.12, 15.1, 0'.3 (A. Baransky, Lisnyky, Ukraine, 70-cm reflector + CCD); COMET C/2005 L3 (McNaught) Total-magnitude and coma-diameter estimates (visual unless otherwise noted): 2007 Sept. 7.93, 15.3, 0'.25 (J. Carvajal, Avila, Spain, 0.45-m reflector); 7.91, 14.3, 0'.2 (J. J. Gonzalez, Leon, Spain, 0.20-m reflector); Aug. 24.79, 14.9, +0'.4 (A. Baransky, Lisnyky, Ukraine, 0.70-m reflector + CCD); 18.87, 13.3:, 1'.2 (M. L. Paradowski, Lublin, Polaand, 0.20-m reflector); 12.99, 15.2, 0'.5 (J. Carvajal, Avila, Spain, 0.45-m reflector); July 25.05, 13.5, 0'.7 (J. J. Gonzalez, Leon, Spain, 0.20-m reflector); July 14.06, 13.2, 0'.8 (J. J. Gonzalez, Leon, Spain, 0.20-m reflector); June 20.05, 13.8, 0'.5 (J. J. Gonzalez, Leon, Spain, 0.20-m reflector); 16.97, 14.9, +0'.3 (A. Baransky, Lisnyky, Ukraine, 0.70-m reflector + CCD); May 26.70, 14.1, 0'.3 (S. Yoshida, Kita-karuizawa, Gunma, Japan, 0.40-m reflector); 14.99, 14.6, +0'.3 (A. Baransky, Lisnyky, Ukraine, 0.70-m reflector + CCD); Mar. 31.07, 15.8, 0'.3 (A. Baransky, Lisnyky, Ukraine, 0.70-m reflector + CCD); COMET C/2005 S4 (McNaught) Total-magnitude and coma-diameter estimates (visual unless otherwise noted): 2007 July 20.00, 16.6, +0'.3 (A. Baransky, Lisnyky, Ukraine, 0.70-m reflector + CCD); 2006 Sep. 13.90, 17.2, +0'.3 (A. Baransky, Lisnyky, Ukraine, 70-cm reflector + CCD); 11.90, 17.1, +0'.3 (A. Baransky, Lisnyky, Ukraine, 70-cm reflector + CCD); COMET C/2005 YW (LINEAR) Total-magnitude and coma-diameter estimates (visual unless otherwise noted): 2007 Apr. 21.37, 12.5, 0'.5 (S. Rae, Hamilton, New Zealand, 0.25-m reflector); 20.35, 12.0, 0'.5 (S. Rae, Hamilton, New Zealand, 0.25-m reflector); 19.44, 12.2, 0'.6 (S. Rae, Hamilton, New Zealand, 0.25-m reflector); Mar. 20.07, 14.1, +0'.33 (V. Buso and L. Mansilla, Rosario, Argentina, 28-cm reflector + CCD); 13.11, 14.1, +0'.38 (V. Buso and L. Mansilla, Rosario, Argentina, 28-cm reflector + CCD; moonlight); 10.10, 13.4, +0'.4 (V. Buso and L. Mansilla, Rosario, Argentina, 28-cm reflector + CCD; moonlight); 6.10, 14.1, +0'.3 (V. Buso and L. Mansilla, Rosario, Argentina, 28-cm reflector + CCD; moonlight); 2006 Oct. 31.82, 13.7, 0'.5 (S. Yoshida, Gunma, Japan, 40-cm reflector); COMET C/2006 A1 (Pojmanski) Total-magnitude and coma-diameter estimates (visual unless otherwise noted): 2006 Aug. 20.91, [14.5, 1' (J. Carvajal, Avila, Spain, 32-cm reflector); COMET C/2006 CK10 (Catalina) Total-magnitude and coma-diameter estimates (visual unless otherwise noted): 2006 Sep. 24.09, 17.0, +0'.3 (A. Baransky, Lisnyky, Ukraine, 70-cm reflector + CCD); COMET P/2006 F1 (Kowalski) Total-magnitude and coma-diameter estimates (visual unless otherwise noted): 2007 June 14.0, 18.7, -- (K. S\'arneczky, Konkoly Observatory, 0.60-m Schmidt telescope + CCD + R filter; starlike coma); COMET P/2006 HR30 (Siding Spring) Total-magnitude and coma-diameter estimates (visual unless otherwise noted): 2007 Feb. 17.85, 14.1, 0'.6 (E. Brezina and J. Srba, Vsetin, Czech Republic, 0.15-m reflector + CCD + R filter); 12.86, 14.4, -- (J. J. Gonzalez, Asturias, Spain, 0.20-m reflector); Jan. 15.88, 14.1, -- (M. Reszelski, Szamotuly-Galowo, Poland, 41.0-cm reflector; stellar); COMET C/2006 K4 (NEAT) Total-magnitude and coma-diameter estimates (visual unless otherwise noted): 2006 June 10.02, 18.0, +0'.2 (A. Lepardo and V. Santini, Remanzacco, Italy, 25-cm reflector + CCD); COMET C/2006 L1 (GARRADD) Total-magnitude and coma-diameter estimates (visual unless otherwise noted): 2007 Feb. 18.83, 13.4:, 1'.7 (M. L. Paradowski, Lublin, Poland, 0.25-m reflector); 17.84, 12.7, &0'.5 (M. L. Paradowski, Lublin, Poland, 0.20-m reflector); 17.79, 15.5, 0'.5 (E. Brezina and J. Srba, Vsetin, Czech Republic, 0.15-m reflector + CCD + R filter); 16.88, 12.5:, &1' (M. L. Paradowski, Lublin, Poland, 0.20-m reflector; alt 18 deg); Jan. 21.76, 12.2, 1'.5 (M. L. Paradowski, Lublin, Poland, 0.20-m reflector); 19.85, 12.5, 1' (J. J. Gonzalez, Leon, Spain, 0.20-m reflector); 15.88, 11.7, 1'.2 (M. Reszelski, Szamotuly-Galowo, Poland, 41.0-cm reflector); 14.78, 11.5, 0'.7 (W. Hasubick, Buchloe, Germany, 44-cm reflector); 6.74, 12.5:, & 1' (M. L. Paradowski, Lublin, Poland, 0.20-m reflector; clouds); COMET C/2006 L2 (McNAUGHT) Total-magnitude and coma-diameter estimates (visual unless otherwise noted): 2007 Feb. 18.81, 12.5, 2'.2 (M. L. Paradowski, Lublin, Poland, 0.25-m reflector; alt. 18.5 deg); Jan. 28.13, 12.3:, & 1' (M. L. Paradowski, Lublin, Poland, 0.20-m reflector; interference from 10.3-mag star); COMET C/2006 M1 (LINEAR) Total-magnitude and coma-diameter estimates (visual unless otherwise noted): 2006 Sep. 21.88, 17.7, +0'.2 (A. Baransky, Lisnyky, Ukraine, 70-cm reflector + CCD); COMET C/2006 M4 (SWAN) Total-magnitude and coma-diameter estimates (visual unless otherwise noted): 2006 Dec. 24.22, 10.4, 2' (M. Linnolt, Dillingham, Hawaii, U.S.A., 20-cm reflector); 23.37, 9.4, 5' (S. Yoshida, Gunma, Japan, 0.40-m reflector); 21.78, 9.3, 3' (J. J. Gonzalez, Leon, Spain, 25x100 binoculars; zodiacal light); 20.78, 9.5, 3' (J. J. Gonzalez, Leon, Spain, 25x100 binoculars; zodiacal light); 18.38, 10.5, 1'.5 (Y. Nagai, Gunma, Japan, 0.32-m reflector); 17.69, 9.9, 2'.5 (M. L. Paradowski, Lublin, Poland, 20-cm reflector); 15.71, 9.8, 3' (A. Diepvens, Balen, Belgium, 0.15-m refractor); 15.41, 9.7, 4' (K. Yoshimoto, Yamaguchi, Japan, 20x100 binoculars); 14.78, 9.1, 3' (J. J. Gonzalez, Leon, Spain, 25x100 binoculars; zodiacal light); 13.78, 8.9, 4' (J. J. Gonzalez, Leon, Spain, 25x100 binoculars; zodiacal light); 12.72, 9.3, 3' (A. Diepvens, Balen, Belgium, 0.15-m refractor); 10.77, 8.9, 4' (J. J. Gonzalez, Asturias, Spain, 25x100 binoculars); 10.76, 8.7, 4'.5 (A. Kammerer, Malsch, Germany, 0.30-m reflector); 10.72, 8.7, 6'.5 (K. Hornoch, Lelekovice, Czech Republic, 10x80 binoculars); 10.71, 10.0, 2'.8 (W. Hasubick, Buchloe, Germany, 44-cm reflector); 10.40, 9.4, 6' (K. Yoshimoto, Yamaguchi, Japan, 20x100 binoculars); 10.38, 9.5, 2'.7 (Y. Nagai, Gunma, Japan, 0.32-m reflector); 9.72, 9.7, 3' (M. L. Paradowski, Lublin, Poland, 20-cm reflector); 9.72, 9.2, 3' (A. Diepvens, Balen, Belgium, 0.15-m refractor); 4.41, 9.5, 3'.7 (Y. Nagai, Gunma, Japan, 300-mm camera lens + CCD); 2.45, 8.9, 5' (K. Yoshimoto, Yamaguchi, Japan, 20x100 binoculars); COMET C/2006 O2 (Garradd) Total-magnitude and coma-diameter estimates (visual unless otherwise noted): 2006 Oct. 7.74, 17.0, +0'.3 (A. Baransky, Lisnyky, Ukraine, 70-cm reflector + CCD); COMET C/2006 OF2 (Broughton) Total-magnitude and coma-diameter estimates (visual unless otherwise noted): 2007 Sep. 15.13, 14.1, +0'.6 (L. A. Mansilla, Obs. Teide, Canary Is., 200-mm camera lens + CCD); 14.87, 13.8:, & 0'.4 (M. L. Paradowski, Lublin, Poland, 0.20-m reflector); 13.84, 13.6, 0'.1 (W. Hasubick, Buchloe, Germany, 44-cm reflector); 9.96, 13.8, 0'.4 (J. J. Gonzalez, Leon, Spain, 0.20-m reflector); 8.00, 15.2, 0'.5 (J. Carvajal, Avila, Spain, 0.45-m reflector); 7.87, 13.9, 0'.3 (J. J. Gonzalez, Leon, Spain, 0.20-m reflector); Aug. 13.02, 14.1, 0'.5 (J. Carvajal, Avila, Spain, 0.45-m reflector); 10.12, 14.2, 0'.3 (J. J. Gonzalez, Leon, Spain, 0.20-m reflector); 3.90, 14.8, +0'.3 (A. Baransky, Lisnyky, Ukraine, 0.70-m reflector + CCD); COMET C/2006 P1 (McNaught) Total-magnitude and coma-diameter estimates (visual unless otherwise noted): 2007 July 6.98, 12.6, 1'.0 (W. Robledo, El C\'ondor, Argentina, 0.20-m reflector); June 16.12, 11.8, 1'.5 (W. Robledo, El Condor, Argentina, 0.20-m reflector); 12.42, 10.3, -- (D. A. J. Seargent, Cowra, N.S.W., 25x100 binoculars); 11.42, 10.3, 9' (D. A. J. Seargent, Cowra, N.S.W., 25x100 binoculars); 9.48, 10.1, 8' (D. A. J. Seargent, Cowra, N.S.W., 25x100 binoculars); May 16.99, 10.9, 2'.0 (W. Robledo, El C=F3ndor, Argentina, 0.20-m reflector); 12.35, 10.1, 2'.9 (S. Rae, Hamilton, New Zealand, 0.25-m reflector); COMET P/2006 R2 (Christensen) Total-magnitude and coma-diameter estimates (visual unless otherwise noted): 2006 Oct. 7.84, 17.6, +0'.2 (A. Baransky, Lisnyky, Ukraine, 70-cm reflector + CCD); Sep. 23.57, 17.9*, 0'.2 (M. Tsumura, Wakayama, Japan, 35-cm reflector + CCD); 22.84, 17.3, +0'.2 (A. Baransky, Lisnyky, Ukraine, 70-cm reflector + CCD); 21.92, 17.4, +0'.2 (A. Baransky, Lisnyky, Ukraine, 70-cm reflector + CCD); COMET P/2006 S1 (Christensen) Total-magnitude and coma-diameter estimates (visual unless otherwise noted): 2006 Oct. 13.96, 17.2, +0'.3 (A. Baransky, Lisnyky, Ukraine, 70-cm reflector + CCD); 13.06, 17.8, +0'.3 (A. Baransky, Lisnyky, Ukraine, 70-cm reflector + CCD); Sep. 23.58, 17.2*, 0'.2 (M. Tsumura, Wakayama, Japan, 35-cm reflector + CCD); 22.84, 17.5, +0'.3 (A. Baransky, Lisnyky, Ukraine, 70-cm reflector + CCD); COMET C/2006 S2 (LINEAR) Total-magnitude and coma-diameter estimates (visual unless otherwise noted): 2006 Oct. 27.77, 18.3, +0'.2 (A. Baransky, Lisnyky, Ukraine, 70-cm reflector + CCD); Sep. 23.80, 18.7, +0'.2 (A. Baransky, Lisnyky, Ukraine, 70-cm reflector + CCD); COMET C/2006 S3 (LONEOS) Total-magnitude and coma-diameter estimates (visual unless otherwise noted): 2006 Oct. 13.95, 19.2, 0'.2 (A. Baransky, Lisnyky, Ukraine, 70-cm reflector + CCD); Sep. 23.94, 18.9, +0'.2 (A. Baransky, Lisnyky, Ukraine, 70-cm reflector + CCD); 21.96, 18.2, +0'.2 (A. Baransky, Lisnyky, Ukraine, 70-cm reflector + CCD); 19.32, 19.0, -- (B. Skiff, Lowell Observatory, Flagstaff, AZ, LONEOS survey; CCD discovery); COMET C/2006 S4 (Christensen) Total-magnitude and coma-diameter estimates (visual unless otherwise noted): 2006 Sep. 24.01, 17.0, +0'.25 (A. Baransky, Lisnyky, Ukraine, 70-cm reflector + CCD); 22.89, 16.9, +0'.25 (A. Baransky, Lisnyky, Ukraine, 70-cm reflector + CCD); 22.37, 16.8, -- (E. J. Christensen, Catalina Mountain, AZ, U.S.A., 68-cm Schmidt reflector + CCD; discovery); COMET C/2006 S5 (Hill) Total-magnitude and coma-diameter estimates (visual unless otherwise noted): 2007 Aug. 17.01, 13.6:, & 0'.5 (M. L. Paradowski, Lublin, Poland, 0.20-m reflector; clouds; alt. 19.9 deg); 2006 Oct. 26.86, 17.8, 0'.2 (A. Baransky, Lisnyky, Ukraine, 70-cm reflector + CCD); 17.82, 17.7, 0'.2 (A. Baransky, Lisnyky, Ukraine, 70-cm reflector + CCD); 13.86, 17.4, +0'.3 (A. Baransky, Lisnyky, Ukraine, 70-cm reflector + CCD); 9.00, 17.9, +0'.2 (A. Baransky, Lisnyky, Ukraine, 70-cm reflector + CCD); 5.00, 18.4, +0'.2 (A. Baransky, Lisnyky, Ukraine, 70-cm reflector + CCD); Sep. 28.28, 18.6, -- (R. E. Hill, Catalina Mountain, AZ, U.S.A., 68-cm Schmidt reflector + CCD; discovery); COMET P/2006 S6 (Hill) Total-magnitude and coma-diameter estimates (visual unless otherwise noted): 2006 Oct. 27.13, 17.9, 0'.2 (A. Baransky, Lisnyky, Ukraine, 70-cm reflector + CCD); 18.06, 17.6, 0'.2 (A. Baransky, Lisnyky, Ukraine, 70-cm reflector + CCD); 4.95, 18.2, +0'.2 (A. Baransky, Lisnyky, Ukraine, 70-cm reflector + CCD); Sep. 28.40, 18.7, -- (R. E. Hill, Catalina Mountain, AZ, U.S.A., 68-cm Schmidt reflector + CCD; discovery); COMET C/2006 T1 (Levy) Total-magnitude and coma-diameter estimates (visual unless otherwise noted): 2007 Mar. 10.16, [18.0, -- (V. Buso and L. Mansilla, Rosario, Argentina, 28-cm reflector + CCD; moonlight); 2006 Nov. 17.52, 14.4, +1'.5 (E. Guido and G. Sostero, remotely near Mayhill, NM, U.S.A., 25-cm reflector + CCD); 16.19, 13.0, 1'.2 (W. Hasubick, Buchloe, Germany, 44-cm reflector); COMET P/2006 U1 (LINEAR) Total-magnitude and coma-diameter estimates (visual unless otherwise noted): 2006 Nov. 24.56, 16.3*, 0'.2 (M. Tsumura, Wakayama, Japan, 35-cm reflector + CCD); 20.36, 16.3, -- (E. Guido and G. Sostero, remotely near Mayhill, NM, U.S.A., 25-cm reflector + CCD; stellar appearance); Oct. 31.94, 17.2, +0'.3 (A. Baransky, Lisnyky, Ukraine, 70-cm reflector + CCD); 31.63, 16.8*, 0'.2 (M. Tsumura, Wakayama, Japan, 35-cm reflector + CCD); 21.43, 16.4, -- (E. Guido and G. Sostero, near Mayhill, NM, U.S.A., 25-cm reflector + CCD; stellar appearance); COMET C/2006 U5 (Christensen) Total-magnitude and coma-diameter estimates (visual unless otherwise noted): 2006 Oct. 31.88, 17.7, +0'.3 (A. Baransky, Lisnyky, Ukraine, 70-cm reflector + CCD); COMET C/2006 U6 (Spacewatch) Total-magnitude and coma-diameter estimates (visual unless otherwise noted): 2006 Nov. 1.10, 19.2, +0'.2 (A. Baransky, Lisnyky, Ukraine, 70-cm reflector + CCD); COMET C/2006 VZ13 (LINEAR) Total-magnitude and coma-diameter estimates (visual unless otherwise noted): 2007 Aug. 25.91, 10.2, 5' (J. G. de S. Aguiar, Campinas, Brasil, 0.27-m reflector; moonlight); 21.91, 9.5, -- (A. Amorim, Florianopolis, Brazil, 0.18-m reflector, moonlight); 20.91, 9.3, -- (A. Amorim, Florianopolis, Brazil, 0.18-m reflector, moonlight); 9.90, 8.4, 5' (J. J. Gonzalez, Leon, Spain, 25x100 binoculars); 7.92, 8.2, -- (A. Amorim, Florianopolis, Brazil, 20x80 binoculars); 7.90, 8.2, 6' (J. J. Gonzalez, Leon, Spain, 25x100 binoculars); 6.83, 8.8:, & 2'.5 (M. L. Paradowski, Lublin, Poland, 0.25-m reflector; twilight, alt. 6.6 deg); 5.28, 9.0, 6' (M. Linnolt, Dillingham, Hawaii, 0.20-m reflector); 5.84, 8.4, 5' (M. Lehky, Hradec Kralove, Czech Republic, 25x100 binoculars; alt. about 15 deg); 4.84, 8.4, 6' (M. Lehky, Hradec Kralove, Czech Republic, 25x100 binoculars; alt. about 15 deg); 4.84, 8.9, 5' (R. Haver, Frasso Sabino, Italy, 20x100 binoculars; much diffusing); 3.93, 7.9, 3' (A. Amorim, Florianopolis, Brazil, 20x80 binoculars); 3.90, 8.1, 7' (J. J. Gonzalez, Leon, Spain, 10x50 binoculars); 2.89, 8.9, +6' (L. A. Mansilla, Obs. Teide, Canary Is., 200-mm camera lens + CCD); 2.85, 8.6:, 4'.2 (M. L. Paradowski, Lublin, Poland, 0.20-m reflector; twilight and moonlight; alt. 10.1 deg); 2.28, 8.2, 10' (S. Yoshida, Koko Head, Oahu, HI, 6.6-cm refractor); 1.87, 8.2, 3'.8 (W. Hasubick, Buchloe, Germany, 10-cm refractor); 1.86, 8.1, 10' (M. Lehky, Hradec Kralove, Czech Republic, 25x100 binoculars); 1.85, 8.3, 7' (K. Hornoch, Vohancice, Czech Republic, 10x80 binoculars); July 31.91, 7.8, 5' (A. Amorim, Florianopolis, Brazil, 20x80 binoculars); 31.88, 8.4:, & 3' (M. L. Paradowski, Lublin, Poland, 25x100 binoculars; moonlight and clouds, low alt. 8.8 deg); 30.90, 8.0:, & 4' (M. L. Paradowski, Lublin, Poland, 25x100 binoculars; moonlight and clouds, low alt. 6.4 deg); 28.91, 7.7, 3' (A. Amorim, Florianopolis, Brazil, 20x80 binoculars, moonlight); 27.95, 7.8, 3' (A. Amorim, Florianopolis, Brazil, 20x80 binoculars, moonlight); 26.89, 8.1, 9' (K. Hornoch, Vohancice, Czech Republic, 10x80 binoculars; moonlight); 26.87, 7.9, 10' (M. Lehky, Hradec Kralove, Czech Republic, 25x100 binoculars); 25.92, 7.8, 5' (A. Amorim, Florianopolis, Brazil, 20x80 binoculars, moonlight); 25.88, 7.9, 10' (M. Lehky, Hradec Kralove, Czech Republic, 25x100 binoculars); 25.02, 7.8, 8' (J. J. Gonzalez, Leon, Spain, 10x50 binoculars); 24.94, 8.0, 11' (K. Hornoch, Vohancice, Czech Republic, 10x80 binoculars); 24.89, 8.1:, 8'.5 (M. L. Paradowski, Lublin, Poland, 25x100 binoculars; clouds); 24.48, 8.0, 7' (Y. Nagai, Gunma, Japan, 20x100 binoculars; haze and moonlight); 24.01, 9.3, +5' (L. A. Mansilla, Obs. Teide, Canary Is., 200-mm camera lens + CCD); 23.95, 8.0, 4' (A. Amorim, Florianopolis, Brazil, 20x80 binoculars, moonlight); 23.91, 7.9, 13' (K. Hornoch, Vohancice, Czech Republic, 10x80 binoculars); 23.88, 8.6:, 7' (M. L. Paradowski, Lublin, Poland, 25x100 binoculars; clouds); 22.92, 8.1, 5'.5 (P. Morel, Cambrai, France, 12.6-m reflector); 22.91, 7.6:, 7'.6 (M. L. Paradowski, Lublin, Poland, 0.20-m reflector; clouds); 22.90, 7.9, 14' (K. Hornoch, Vohancice, Czech Republic, 10x80 binoculars); 22.90, 7.7, 13' (M. Meyer, Ilhorn, Germany, 20x100 binoculars); 22.94, 7.8, 7' (A. Diepvens, Balen, Belgium, 20x50 binoculars); 22.87, 7.8, 10' (M. Lehky, Hradec Kralove, Czech Republic, 25x100 binoculars); 22.85, 8.0, 10' (V. Gonano, Prato Carnico, Italy, 7x50 binoculars, moonlight); 21.97, 7.6, 8' (J. J. Gonzalez, Leon, Spain, 10x50 binoculars); 21.90, 8.0:, 5'.2 (M. L. Paradowski, Lublin, Poland, 25x100 binoculars; clouds); 21.86, 7.5, 11' (M. Lehky, Hradec Kralove, Czech Republic, 25x100 binoculars); 20.94, 7.7, 8' (A. Diepvens, Balen, Belgium, 20x50 binoculars); 20.91, 7.5, 7' (A. Amorim, Florianopolis, Brazil, 20x80 binoculars); 20.88, 7.5, 11' (M. Lehky, Hradec Kralove, Czech Republic, 25x100 binoculars); 20.84, 8.0, 5' (O. Maraev, Saratov, Russia, 0.11-m reflector); 19.94, 8.4, 7' (P. Morel, Cambrai, France, 12.6-m reflector); 19.91, 7.5, 6' (A. Amorim, Florianopolis, Brazil, 20x80 binoculars); 19.85, 8.0, 8' (A. Baransky, Lisnyky, Ukraine, 0.07-m refractor); 18.95, 8.2, 6' (P. Morel, Cambrai, France, 0.126-m reflector); 18.94, 7.5, 10' (A. Diepvens, Balen, Belgium, 20x50 binoculars); 18.92, 7.6, 12' (K. Hornoch, Vohancice, Czech Republic, 10x80 binoculars); 18.91, 7.5, 5' (A. Amorim, Florianopolis, Brazil, 20x80 binoculars); 18.88, 7.3, 12' (M. Lehky, Hradec Kralove, Czech Republic, 25x100 binoculars); 18.86, 7.6, 6' (O. Maraev, Saratov, Russia, 0.11-m reflector); 17.96, 7.4, 11' (J. Carvajal, Madrid, Spain, 10x70 binoculars); 17.94, 7.5, 10' (A. Diepvens, Balen, Belgium, 20x50 binoculars); 17.93, 7.9, 10' (P. Morel, Cambrai, France, 0.126-m reflector); 17.91, 7.2, 14' (M. Meyer, Limburg, Germany, 10x50 binoculars); 17.90, 7.2, 12' (M. Lehky, Hradec Kralove, Czech Republic, 25x100 binoculars); 17.87, 7.7, 7' (O. Maraev, Saratov, Russia, 0.11-m reflector); 17.85, 8.5, 6' (A. Baransky, Lisnyky, Ukraine, 0.07-m refractor); 17.00, 7.3, 12' (J. J. Gonzalez, Asturias, Spain, 7x50 binoculars); 16.94, 7.2, 13' (M. L. Paradowski, Lublin, Poland, 25x100 binoculars; haze); 16.92, 7.5, 14' (K. Hornoch, Vohancice, Czech Republic, 10x80 binoculars); 16.89, 7.1, 13' (M. Lehky, Hradec Kralove, Czech Republic, 25x100 binoculars); 16.84, 7.6, 7' (O. Maraev, Saratov, Russia, 0.11-m reflector); 15.94, 7.6, 10' (A. Diepvens, Balen, Belgium, 20x50 binoculars); 15.91, 7.5, 8' (M. L. Paradowski, Lublin, Poland, 0.20-m reflector); 15.90, 7.2, 13' (M. Meyer, Limburg, Germany, 10x50 binoculars); 15.90, 7.2, 13' (M. Lehky, Hradec Kralove, Czech Republic, 25x100 binoculars); 15.90, 7.8, 12' (A. Kammerer, Malsch, Germany, 9x63 binoculars); 15.01, 7.7, 7' (U. Pilz, Leipzig, Germany, 8-cm refractor); 14.98, 7.2, 13' (M. Meyer, Limburg, Germany, 10x50 binoculars); 14.97, 7.6, 10' (J. Carvajal, Madrid, Spain, 10x70 binoculars); 14.95, 7.7, 10' (A. Diepvens, Balen, Belgium, 20x50 binoculars); 14.94, 7.3, 13' (M. L. Paradowski, Lublin, Poland, 0.20-m reflector; haze); 14.94, 7.9, 6' (P. Morel, Cambrai, France, 0.13-m reflector); 14.93, 7.7, 6' (W. Hasubick, Buchloe, Germany, 10x50 binoculars); 14.92, 7.7, 12' (A. Kammerer, Malsch, Germany, 9x63 binoculars); 14.92, 7.3, 13' (M. Lehky, Hradec Kralove, Czech Republic, 25x100 binoculars); 14.90, 7.2, 10' (T. Scarmato, Calabria, Italy, 7x50 binoculars; close to a bright star); 14.03, 7.2, 13' (J. J. Gonzalez, Leon, Spain, 7x50 binoculars); 13.99, 7.4, 7' (U. Pilz, Leipzig, Germany, 8-cm refractor); 13.98, 7.8, 9' (J. Carvajal, Madrid, Spain, 7x50 binoculars); 13.96, 7.7, 10' (A. Diepvens, Balen, Belgium, 20x50 binoculars); 13.92, 7.7, 10' (A. Kammerer, Malsch, Germany, 9x63 binoculars); 13.91, 7.2, 11' (M. Meyer, Limburg, Germany, 10x50 binoculars); 13.90, 7.5, 15' (K. Hornoch, Vohancice, Czech Republic, 10x80 binoculars); 13.90, 7.4, 11' (W. Hasubick, Buchloe, Germany, 10x50 binoculars); 13.90, 7.8, +10' (L. A. Mansilla, Obs. Teide, Canary Is., 200-mm camera lens + CCD); 13.89, 7.0, 14' (T. Scarmato, Calabria, Italy, 7x50 binoculars); 13.87, 8.2, 7' (O. Maraev, Saratov, Russia, 0.11-m reflector); 12.90, 8.5, +9' (L. A. Mansilla, Obs. Teide, Canary Is., 200-mm camera lens + CCD); 12.90, 7.0, 9' (M. L. Paradowski, Lublin, Poland, 7x50 binoculars; city lights); 12.83, 7.5, 5' (O. Maraev, Saratov, Russia, 0.11-m reflector); 11.91, 7.5, 4' (O. Maraev, Saratov, Russia, 0.11-m reflector); 11.89, 7.4, 14' (K. Hornoch, Vohancice, Czech Republic, 10x80 binoculars); 10.01, 7.3, 10' (J. J. Gonzalez, Leon, Spain, 7x50 binoculars); 9.98, 7.8, 10' (A. Diepvens, Balen, Belgium, 20x50 binoculars); 9.90, 7.5, 14' (T. Scarmato, Calabria, Italy, 7x50 binoculars); 8.90, 7.4, 7' (M. L. Paradowski, Lublin, Poland, 25x100 binoculars); 8.89, 7.5, 12' (T. Scarmato, Calabria, Italy, 7x50 binoculars); 8.31, 7.8, 6' (M. Linnolt, Dillingham, HI, U.S.A., 0.20-m reflector); 7.97, 7.9, 7' (M. Meyer, Limburg, Germany, 0.15-m refractor); 7.90, 7.6, 10' (T. Scarmato, Calabria, Italy, 7x50 binoculars); 7.86, 7.3, 12'.0 (R. Haver, Frasso Sabino, Italy, 10x50 binoculars); 7.67, 7.6, 5' (W. Xu, Guangzhou, China, 0.10-m refractor; city light pollution; clouds); 6.96, 7.9, 12' (A. Kammerer, Malsch, Germany, 9x63 binoculars); 6.95, 8.0, 8'.5 (M. Meyer, Limburg, Germany, 0.15-m refractor); 6.89, 7.5, 14' (T. Scarmato, Calabria, Italy, 7x50 binoculars); 5.94, 7.8, 8' (J. J. Gonzalez, Lugo, Spain, 10x50 binoculars); 5.86, 7.5, 12'.0 (R. Haver, Frasso Sabino, Italy, 10x50 binoculars); 5.49, 8.5, 6' (Y. Nagai, Gunma, Japan, 20x100 binoculars); 4.91, 7.9, 8' (J. J. Gonzalez, Leon, Spain, 7x50 binoculars); June 26.11, 8.8, 5' (J. J. Gonzalez, Leon, Spain, 25x100 binoculars); 23.95, 9.2, 3'.5 (M. L. Paradowski, Lublin, Poland, 0.20-m reflector); 23.68, 9.4, 7'.5 (S. Yoshida, Okinawa, Japan, 6.6R); 23.03, 9.4, 5' (J. J. Gonzalez, Leon, Spain, 25x100 binoculars); 20.94, 10.0, 1'.8 (M. L. Paradowski, Lublin, Poland, 0.20-m reflector); 20.00, 9.8, 3'.5 (J. J. Gonzalez, Leon, Spain, 25x100 binoculars); 17.95, 9.8, 3' (J. J. Gonzalez, Asturias, Spain, 25x100 binoculars); 17.41, 11.2, 2' (M. Linnolt, Dillingham, Hawaii, 0.20-m reflector); 16.95, 10.4, 2'.5 (M. L. Paradowski, Lublin, Poland, 0.20-m reflector); 14.93, 11.0:, 2'.5 (M. L. Paradowski, Lublin, Poland, 0.20-m reflector; haze); 12.23, 10.0, 3' (P. Creed, Grantsville, WV, 10.0-cm refractor); 12.05, 10.3, 3' (J. J. Gonzalez, Leon, Spain, 25x100 binoculars); 8.01, 11.1, 1'.3 (W. Hasubick, Buchloe, Germany, 44-cm reflector); 5.97, 11.1, 2'.5 (J. J. Gonzalez, Leon, Spain, 0.20-m reflector); 4.97, 11.7, 2'.0 (J. J. Gonzalez, Leon, Spain, 0.20-m reflector); Apr. 28.77, 13.3, 0'.6 (S. Yoshida, Gunma, Japan, 0.40-m reflector); 22.04, 11.7, 2'.2 (M. L. Paradowski, Lublin, Poland, 0.20-m reflector; alt. 17.9 deg); 21.05, 12.0, 2'.2 (M. L. Paradowski, Lublin, Poland, 0.20-m reflector; alt. 19.7 deg); COMET C/2006 W3 (Christensen) Total-magnitude and coma-diameter estimates (visual unless otherwise noted): 2006 Nov. 19.44, 18.0, +0'.3 (E. Guido and G. Sostero, remotely near Mayhill, NM, U.S.A., 25-cm reflector + CCD); COMET C/2006 WD4 (Lemmon) Total-magnitude and coma-diameter estimates (visual unless otherwise noted): 2007 June 11.91, 13.4:, & 1' (M. L. Paradowski, Lublin, Poland, 0.20-m reflector; clouds, alt. 14 deg); 10.90, 13.0:, & 1' (M. L. Paradowski, Lublin, Poland, 0.20-m reflector; clouds, alt. 16 deg); 5.93, 13.2, 0'.8 (J. J. Gonzalez, Leon, Spain, 0.20-m reflector); May 26.49, [12.2, ! 0'.6 (S. Yoshida, Kita-karuizawa, Gunma, Japan, 0.40-m reflector); COMET C/2006 XA1 (LINEAR) Total-magnitude and coma-diameter estimates (visual unless otherwise noted): 2007 Apr. 28.48, 13.5, 0'.4 (S. Yoshida, Gunma, Japan, 0.40-m reflector); 13.83, 12.3:, 0'.7 (M. L. Paradowski, Lublin, Poland, 0.20-m reflector); Mar. 16.91, 13.7, 1'.2 (J. J. Gonzalez, Leon, Spain, 0.20-m reflector); Feb. 17.87, 15.0, 0'.5 (E. Brezina and J. Srba, Vsetin, Czech Republic, 0.15-m reflector + CCD + R filter); COMET C/2007 B2 (Skiff) Total-magnitude and coma-diameter estimates (visual unless otherwise noted): 2007 Mar. 24.99, 16.8, 0'.3 (A. Baransky, Lisnyky, Ukraine, 0.70-m reflector + CCD); COMET C/2007 D1 (LINEAR) Total-magnitude and coma-diameter estimates (visual unless otherwise noted): 2007 May 4.80, 17.4, +0'.2 (A. Baransky, Lisnyky, Ukraine, 0.70-m reflector + CCD); Apr. 5.90, 17.6, 0'.3 (A. Baransky, Lisnyky, Ukraine, 0.70-m reflector + CCD); Mar. 24.91, 17.4, 0'.3 (A. Baransky, Lisnyky, Ukraine, 0.70-m reflector + CCD); COMET C/2007 E1 (Garradd) Total-magnitude and coma-diameter estimates (visual unless otherwise noted): 2007 May 26.47, 11.8, 1'.5 (S. Yoshida, Kita-karuizawa, Gunma, Japan, 0.40-m reflector); 17.93, 12.1, -- (U. Pilz, Leipzig, Germany, 32-cm reflector); 16.93, 10.6, 3' (J. J. Gonzalez, Leon, Spain, 0.20-m reflector); 8.91, 10.2, 4' (J. J. Gonzalez, Leon, Spain, 25x100 binoculars); 5.91, 10.2, 4' (J. J. Gonzalez, Asturias, Spain, 25x100 binoculars); 5.87, 10.1, 2'.4 (M. L. Paradowski, Lublin, Poland, 0.20-m reflector); 4.86, 10.2, 1'.2 (M. L. Paradowski, Lublin, Poland, 0.20-m reflector); Apr. 29.48, 10.9, 2'.0 (S. Yoshida, Gunma, Japan, 0.40-m reflector); 28.49, 10.9, 1'.0 (S. Yoshida, Gunma, Japan, 0.40-m reflector); 26.92, 13.7, +0'.4 (A. Baransky, Lisnyky, Ukraine, 0.70-m reflector + CCD); 20.41, 9.4, 8' (D. A. J. Seargent, Cowra, N.S.W., 25x100 binoculars); 19.88, 9.1, 6' (B. H. Granslo, Fjellhamar, Norway, 0.10-m refractor; astronomical twilight); 19.85, 9.0, 14' (W. Hasubick, Buchloe, Germany, 10-cm refractor); 18.88, 10.0, 4'.0 (A. Kammerer, Malsch, Germany, 0.30-m reflector); 17.87, 9.5, 7' (J. J. Gonzalez, Asturias, Spain, 25x100 binoculars); 16.88, 9.8, 4'.5 (A. Kammerer, Malsch, Germany, 0.30-m reflector); 16.84, 9.7, 6' (M. Lehky, Hradec Kralove, Czech Republic, 25x100 binoculars); 16.35, 10.4, 3' (S. Rae, Hamilton, New Zealand, 0.25-m reflector); 15.86, 9.8, 5'.2 (M. L. Paradowski, Lublin, Poland, 0.20-m reflector); 15.83, 9.7, 6' (M. Lehky, Hradec Kralove, Czech Republic, 25x100 binoculars); 15.37, 9.9, 5' (S. Rae, Hamilton, New Zealand, 0.25-m reflector); 15.27, 10.7, 2' (M. Linnolt, Dillingham, HI, U.S.A., 0.20-m reflector); 14.86, 9.5, 6' (A. Kammerer, Malsch, Germany, 0.30-m reflector); 14.86, 11.0, 5' (U. Pilz, Leipzig, Germany, 32-cm reflector); 14.84, 10.2, 4'.9 (M. L. Paradowski, Lublin, Poland, 0.20-m reflector); 14.83, 9.5, 7' (M. Lehky, Hradec Kralove, Czech Republic, 25x100 binoculars); 13.88, 9.5, 6' (M. Lehky, Hradec Kralove, Czech Republic, 25x100 binoculars); 13.86, 10.1, 6'.1 (M. L. Paradowski, Lublin, Poland, 0.20-m reflector); 12.83, 9.4, 7' (M. Lehky, Hradec Kralove, Czech Republic, 25x100 binoculars); 11.86, 9.4, 6' (M. Lehky, Hradec Kralove, Czech Republic, 25x100 binoculars); 11.84, 9.0, 8'.5 (M. Meyer, Kaltenholzhausen, Germany, 20x100 binoculars); 10.42, 9.5, 8' (D. A. J. Seargent, The Entrance, N.S.W., 25x100 binoculars); 9.86, 9.4, 7' (J. J. Gonzalez, Asturias, Spain, 25x100 binoculars); 9.47, 9.6, -- (D. A. J. Seargent, The Entrance, N.S.W., 25x100 binoculars); 7.89, 9.1, 9' (M. Meyer, Frauenstein, Germany, 15-cm refractor); 7.88, 9.3, 7' (J. J. Gonzalez, Asturias, Spain, 25x100 binoculars); 6.87, 9.1, 8'.5 (V. Nevski, Vitebsk, Belarus, 20x110 binoculars); 5.84, 12.4, 0'.6 (W. Hasubick, Buchloe, Germany, 44-cm reflector); Mar. 25.06, 14.3, 0'.4 (A. Baransky, Lisnyky, Ukraine, 0.70-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); July 15.02, 11.8, -- (U. Pilz, Leipzig, Germany, 8-cm refractor); 13.11, 13.2, 1'.6 (L. A. Mansilla, Obs. Teide, Canary Is., 200-mm camera lens + CCD); June 19.91, 12.6, 1'.8 (L. A. Mansilla, Obs. Teide, Canary Is., 200-mm camera lens + CCD); 16.97, 12.9:, 1'.5 (M. L. Paradowski, Lublin, Poland, 0.20-m reflector); 16.88, 12.0, 2'.0 (L. A. Mansilla, Obs. Teide, Canary Is., 200-mm camera lens + CCD); 10.95, 12.8:, 1'.6 (M. L. Paradowski, Lublin, Poland, 0.20-m reflector); 5.95, 11.2, 2'.5 (J. J. Gonzalez, Leon, Spain, 0.20-m reflector); May 26.69, 11.3, 2'.7 (S. Yoshida, Kita-karuizawa, Gunma, Japan, 0.40-m reflector); 26.45, 11.8, 1'.5 (M. Linnolt, Big Bear, CA, 0.20-m reflector); 19.72, 10.5, 3'.6 (Y. Nagai, Gunma, Japan, 0.32-m reflector); 18.98, 9.2, 4'.8 (A. Kammerer, Malsch, Germany, 0.30-m reflector); 18.06, 9.3, 4'.8 (A. Kammerer, Malsch, Germany, 0.30-m reflector); 18.05, 10.2, 2' (A. Diepvens, Balen, Belgium, 0.15-m refractor); 17.95, 10.5, -- (U. Pilz, Leipzig, Germany, 20x80 binoculars); 16.97, 9.2, 8' (J. J. Gonzalez, Leon, Spain, 25x100 binoculars); 14.82, 10.0, 3' (V. M. Ivanov, Saratov, Russia, 0.27-m reflector); 14.08, 10.0, 2' (A. Diepvens, Balen, Belgium, 0.15-m refractor); 13.95, 9.8:, 6'.5 (M. L. Paradowski, Lublin, Poland, 0.20-m reflector; clouds); 12.97, 9.6:, 5' (M. L. Paradowski, Lublin, Poland, 0.20-m reflector; clouds); 11.92, 8.9, 6' (M. L. Paradowski, Lublin, Poland, 0.20-m reflector; haze); 11.55, 9.5, 4'.0 (Y. Nagai, Gunma, Japan, 0.32-m reflector); 8.94, 8.3, 8' (J. J. Gonzalez, Leon, Spain, 25x100 binoculars); 7.57, 9.4, 4'.7 (Y. Nagai, Gunma, Japan, 0.32-m reflector); 6.33, 8.8, 6' (M. Linnolt, Dillingham, HI, U.S.A., 0.20-m reflector); 5.92, 7.8, 7' (J. J. Gonzalez, Asturias, Spain, 25x100 binoculars); 5.91, 8.7, 5'.1 (M. L. Paradowski, Lublin, Poland, 0.20-m reflector); 5.88, 9.2, 3' (A. Diepvens, Balen, Belgium, 0.15-m refractor); 4.85, 8.5, 7'.0 (M. L. Paradowski, Lublin, Poland, 0.20-m reflector); 3.86, 9.1, 3' (A. Diepvens, Balen, Belgium, 0.15-m refractor); 2.71, 10.0, 5'.0 (Y. Nagai, Gunma, Japan, 300-mm camera lens + CCD); Apr. 29.75, 8.9, 3'.9 (S. Yoshida, Gunma, Japan, 0.40-m reflector); 28.74, 8.6, 6' (S. Yoshida, Gunma, Japan, 0.40-m reflector); 28.60, 10.2, 4'.7 (Y. Nagai, Gunma, Japan, 300-mm camera lens + CCD); 28.08, 8.4, 3' (A. Diepvens, Balen, Belgium, 0.15-m refractor); 25.76, 8.8, 5'.0 (Y. Nagai, Gunma, Japan, 0.32-m reflector); 25.10, 8.4, 3' (A. Diepvens, Balen, Belgium, 0.15-m refractor); 24.99, 8.5, 5' (V. M. Ivanov, Saratov, Russia, 0.27-m reflector) 24.67, 7.5:, 3' (S. Rae, Hamilton, New Zealand, 10x50 binoculars; fog); 23.12, 8.3, 3' (A. Diepvens, Balen, Belgium, 0.15-m refractor); 23.09, 8.2, 11' (K. Hornoch, Lelekovice, Czech Republic, 10x80 binoculars); 23.07, 7.9, 7' (M. Meyer, Limburg, Germany, 0.15-m refractor); 22.15, 7.5, 10' (J. J. Gonzalez, Asturias, Spain, 7x50 binoculars); 22.09, 7.8, 9'.2 (W. Hasubick, Buchloe, Germany, 10-cm refractor); 22.03, 7.4, 6' (M. L. Paradowski, Lublin, Poland, 0.20-m reflector); 21.20, 7.5, 8' (A. Amorim, Florianopolis, Brazil, 20x80 binoculars); 21.03, 8.8, 5' (M. L. Paradowski, Lublin, Poland, 0.20-m reflector; clouds); 20.67, 7.7, 4' (S. Rae, Hamilton, New Zealand, 10x50 binoculars; fog); 20.06, 8.0, 8' (B. H. Granslo, Fjellhamar, Norway, 0.10-m refractor; astronomical twilight); 19.70, 8.1, 6'.9 (S. Rae, Hamilton, New Zealand, 10x50 binoculars); 19.12, 8.0, 8' (A. Kammerer, Malsch, Germany, 9x63 binoculars); 18.68, 8.0, 8'.6 (S. Rae, Hamilton, New Zealand, 10x50 binoculars); 18.35, 8.0, 8' (A. Amorim, Florianopolis, Brazil, 0.18-m reflector); 18.15, 7.6, 10' (J. J. Gonzalez, Leon, Spain, 7x50 binoculars); 17.88, 8.2, 4' (W. Xu, Guangzhou, China, 0.10-m refractor; light pollution, twilight); 17.12, 7.8, 10' (A. Kammerer, Malsch, Germany, 9x63 binoculars); 17.08, 8.3, 4' (B. H. Granslo, Fjellhamar, Norway, 0.20-m reflector; alt. 9 deg., twilight); 16.67, 7.6, 8' (D. A. J. Seargent, Cowra, N.S.W., 25x100 binoculars); 16.67, 7.9, 8'.8 (S. Rae, Hamilton, New Zealand, 10x50 binoculars); 16.35, 8.5, 5' (A. Amorim, Florianopolis, Brazil, 0.18-m reflector); 16.08, 8.4, 3' (M. L. Paradowski, Lublin, Poland, 0.20-m reflector; twilight, alt. 18 deg); 15.64, 8.1:, 5' (S. Rae, Hamilton, New Zealand, 10x50 binoculars); 15.63, 8.9, 3'.4 (S. Rae, Hamilton, New Zealand, 0.25-m reflector); 15.11, 7.9, 4'.0 (A. Kammerer, Malsch, Germany, 0.30-m reflector; alt. 11 deg); 14.08, 8.8, 3'.3 (M. L. Paradowski, Lublin, Poland, 0.20-m reflector; alt. 12 deg); 13.17, 7.8, 8' (J. J. Gonzalez, Leon, Spain, 7x50 binoculars); 12.17, 7.7, 8' (J. J. Gonzalez, Asturias, Spain, 25x100 binoculars); 9.33, 8.9, 5' (A. Amorim, Florianopolis, Brazil, 20x80 binoculars, moonlight); Mar. 31.37, 8.5, 2'.5 (W. Robledo, Rafael Garcia, Argentina, 0.20-m reflector); 31.33, 8.5, 4' (A. Amorim, Florianopolis, Brazil, 20x80 binoculars); 27.73, 8.7, 3'.0 (D. A. J. Seargent, Cowra, N.S.W., 25x100 binoculars); 26.64, 8.7, 3'.6 (S. Rae, Hamilton, New Zealand, 0.25-m reflector); 26.36, 8.7:, -- (A. Amorim, Florianopolis, Brazil, 20x80 binoculars; twilight); 24.66, 8.7, 4'.5 (J. Drummond, Gisborne, New Zealand, 8-cm refractor): 24.62, 9.3, 3'.1 (S. Rae, Hamilton, New Zealand, 0.25-m reflector); 23.64, 9.4, 3'.2 (S. Rae, Hamilton, New Zealand, 0.25-m reflector); 23.33, 8.5, 4' (A. Amorim, Florianopolis, Brazil, 20x80 binoculars); 22.33, 8.6, 3' (A. Amorim, Florianopolis, Brazil, 20x80 binoculars); 20.63, 9.3, 2'.2 (S. Rae, Hamilton, New Zealand, 0.25-m reflector); 19.34, 9.5, 3' (A. Amorim, Florianopolis, Brazil, 20x80 binoculars); 18.72, 9.6, 4'.2 (E. Guido and G. Sostero, in Italy but remotely with a 0.09-cm reflector + CCD near Brisbane, Australia); 18.64, 9.3, 2'.7 (S. Rae, Hamilton, New Zealand, 0.25-m reflector); 18.33, 9.4, 3'.0 (W. Robledo, Rafael Garcia, Argentina, 0.20-m reflector); 17.85, 9.6, 3'.0 (A.Pearce, Nedlands, W. Australia, 0.41-m reflector); 16.70, 9.1, 4' (D. A. J. Seargent, Cowra, N.S.W., 25x100 binoculars); 16.59, 9.5, 2'.6 (J. Drummond, Gisborne, New Zealand, 41-cm reflector); COMET C/2007 F1 (LONEOS) Total-magnitude and coma-diameter estimates (visual unless otherwise noted): 2007 Sep. 24.14, 9.5, 3'.0 (W. Hasubick, Buchloe, Germany, 10-cm refractor); 23.20, 8.7, 4' (J. J. Gonzalez, Leon, Spain, 25x100 binoculars; astron. twilight; alt. 7 deg); 20.81, 10.3, -- (K. Kadota, Ageo, Saitama-ken, Japan, 0.25-m reflector + CCD); 20.20, 9.3, 2'.5 (J. J. Gonzalez, Leon, Spain, 0.20-m reflector; alt. 6 deg; astron. twilight); 19.82, 10.6:, 1'.5 (K. Kadota, Ageo, Saitama-ken, Japan, 0.25-m reflector + CCD; twilight, low alt., through clouds); 15.20, [10.0, ! 1'.0 (J. J. Gonzalez, Leon, Spain, 0.20-m reflector); Apr. 29.89, 18.2, +0'.2 (A. Baransky, Lisnyky, Ukraine, 0.70-m reflector + CCD); 5.84, 18.3, 0'.3 (A. Baransky, Lisnyky, Ukraine, 0.70-m reflector + CCD); Mar. 24.99, 18.4, +0'.2 (A. Baransky, Lisnyky, Ukraine, 0.70-m reflector + CCD); COMET C/2007 G1 (LINEAR) Total-magnitude and coma-diameter estimates (visual unless otherwise noted): 2007 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): 2007 Sep. 23.17, 12.8, 1'.0 (J. J. Gonzalez, Leon, Spain, 0.20-m reflector); 20.88, 13.5, 0'.8 (W. Hasubick, Buchloe, Germany, 44-cm reflector); 20.16, 13.0, 0'.8 (J. J. Gonzalez, Leon, Spain, 0.20-m reflector); 15.97, 13.5:, 1'.6 (M. L. Paradowski, Lublin, Poland, 0.20-m reflector); 15.16, 13.0, 0'.8 (J. J. Gonzalez, Leon, Spain, 0.20-m reflector); 14.30, 13.4, +1'.6 (T. Scarmato, remotely via Mayhill, NM, U.S.A., 25-cm reflector + CCD); 13.42, 13.8, +1'.6 (T. Scarmato, remotely via Mayhill, NM, U.S.A., 25-cm reflector + CCD); 11.08, 13.6, +1'.5 (L. A. Mansilla, Obs. Teide, Canary Is., 200-mm camera lens + CCD); 10.02, 13.2, 0'.8 (J. J. Gonzalez, Leon, Spain, 0.20-m reflector); 8.11, 13.3, 2' (J. G. de S. Aguiar, Joaquim Egidio, Brasil, 0.27-m reflector); 8.10, 13.2, 0'.8 (J. J. Gonzalez, Leon, Spain, 0.20-m reflector); 8.02, 14.2, 1' (J. Carvajal, Avila, Spain, 0.45-m reflector); Aug. 16.16, 13.5, 0'.7 (J.J. Gonzalez, Leon, Spain, 0.20-m reflector); 13.09, 14.3, 0'.75 (J. Carvajal, Avila, Spain, 0.45-m reflector); July 14.11, 14.7, -- (J. J. Gonzalez, Leon, Spain, 0.20-m reflector); June 18.99, 15.1, +0'.3 (A. Baransky, Lisnyky, Ukraine, 0.70-m reflector + CCD); COMET C/2007 H2 (Skiff) Total-magnitude and coma-diameter estimates (visual unless otherwise noted): 2007 Apr. 27.03, 20.1, +0'.1 (A. Baransky, Lisnyky, Ukraine, 0.70-m reflector + CCD); COMET C/2007 JA21 (LINEAR) Total-magnitude and coma-diameter estimates (visual unless otherwise noted): 2007 June 18.95, 18.2, +0'.1 (A. Baransky, Lisnyky, Ukraine, 0.70-m reflector + CCD); COMET C/2007 K4 (Gibbs) Total-magnitude and coma-diameter estimates (visual unless otherwise noted): 2007 June 18.92, 19.2, +0'.1 (A. Baransky, Lisnyky, Ukraine, 0.70-m reflector + CCD); COMET C/2007 K5 (Lovejoy) Total-magnitude and coma-diameter estimates (visual unless otherwise noted): 2007 June 5.38, 11.3:, 3'-4' (D. A. J. Seargent, Cowra, N.S.W., 25.4-cm 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); July 17.99, 18.7, +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): Aug. 25.05, 17.1, +0'.2 (A. Baransky, Lisnyky, Ukraine, 0.70-m reflector + CCD); Aug. 22.02, 17.0, +0'.2 (A. Baransky, Lisnyky, Ukraine, 0.70-m reflector + CCD); Total-magnitude and coma-diameter estimates: P/2007 N1 McNaught 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); July 17.88, 17.6, +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 Sept. 5.89, 17.1, +0'.2 (A. Baransky, Lisnyky, Ukraine, 0.70-m reflector + CCD); Aug. 23.82, 17.3, +0'.2 (A. Baransky, Lisnyky, Ukraine, 0.70-m reflector + CCD); 21.93, 17.4, +0'.2 (A. Baransky, Lisnyky, Ukraine, 0.70-m reflector + CCD); 4.93, 18.1, +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 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 Sep. 17.95, 17.7, +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 Sep. 18.07, 17.9, +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); Apr. 17.85, 6.7, 2' (J. J. Gonzalez, Asturias, Spain, 25x100 binoculars; alt. 5 deg; twilight); 14.84, [7.0, -- (B. H. Granslo, Blindern, Oslo, Norway, 0.07-m refractor; alt. 4 deg, twilight); 14.50, 7.4, 4' (M. Lehky, Bacetin, Czech Republic, 25x100 binoculars; alt. about 7 deg); 13.85, 7.7, 2' (J. J. Gonzalez, Asturias, Spain, 25x100 binoculars; astronomical twilight); 12.84, [7.0, -- (B. H. Granslo, Fjellhamar, Norway, 0.10-m refractor; alt. 4 deg, twilight); 11.84, 8.8, 1'.3 (J. Qvam, Borrevannet, Horten, Norway, 0.10-m refractor + CCD + V filter; alt. 5.5 deg., twilight); 7.84, 8.0:, & 2' (B. H. Granslo, Fjellhamar, Norway, 0.10-m refractor; barely visible; alt. 4 deg, twilight); 7.83, 8.9, 1'.2 (J. Qvam, Borrevannet, Horten, Norway, 0.10-m refractor + CCD + V filter; alt. 7 deg., twilight); Mar. 31.82, [10.0, -- (B. H. Granslo, Fjellhamar, Norway, 0.20-m reflector; alt. 8 deg, twilight); 11.83, 11.3, 2'.5 (J. J. Gonzalez, Leon, Spain, 0.20-m reflector; alt. 10 deg; zodiacal light); Feb. 18.76, 12.1:, 1'.3 (M. L. Paradowski, Lublin, Poland, 0.25-m reflector; alt. 12 deg); 14.82, 13.3, 2'.5 (J. J. Gonzalez, Asturias, Spain, 0.20-m reflector); COMET 4P/Faye Total-magnitude and coma-diameter estimates (visual unless otherwise noted): 2007 Apr. 5.83, 12.7, 0'.5 (W. Hasubick, Buchloe, Germany, 44-cm reflector); Mar. 10.87, 12.7, 1'.2 (J. J. Gonzalez, Leon, Spain, 0.20-m reflector); Feb. 17.83, 12.4, 2'.1 (E. Brezina and J. Srba, Vsetin, Czech Republic, 0.15-m reflector + CCD + R filter); 16.86, 12.0:, &1'.2 (M. L. Paradowski, Lublin, Poland, 0.20-m reflector); 14.84, 11.8, 1'.7 (J. J. Gonzalez, Asturias, Spain, 0.20-m reflector); 12.81, 11.9, 1'.7 (J. J. Gonzalez, Asturias, Spain, 0.20-m reflector); 4.81, 11.7, 1'.5 (J. J. Gonzalez, Asturias, Spain, 0.20-m reflector); 4.43, 11.9, 1'.2 (Y. Nagai, Gunma, Japan, 300-mm camera lens + CCD); COMET 8P/Tuttle Total-magnitude and coma-diameter estimates (visual unless otherwise noted): 2007 Sep. 16.04, 13.5:, 0'.6 (M. L. Paradowski, Lublin, Poland, 0.20-m reflector); 14.90, 13.3:, 0'.6 (M. L. Paradowski, Lublin, Poland, 0.20-m reflector); 8.01, [15.2, -- (J. Carvajal, Avila, Spain, 0.45-m reflector); COMET 17P/Holmes Total-magnitude and coma-diameter estimates (visual unless otherwise noted): 2007 Aug. 25.07, 16.4, +0'.3 (A. Baransky, Lisnyky, Ukraine, 0.70-m reflector + CCD); July 25.12, 14.7, 0'.4 (J. J. Gonzalez, Leon, Spain, 0.20-m reflector); 14.09, [14.5, ! 0'.5 (J. J. Gonzalez, Leon, Spain, 0.20-m reflector); COMET 29P/SCHWASSMANN-WACHMANN Total-magnitude and coma-diameter estimates (visual unless otherwise noted): 2007 Apr. 13.80, 11.8, 1'.8 (M. L. Paradowski, Lublin, Poland, 0.20-m reflector); Mar. 16.89, 12.3, 1'.2 (J. J. Gonzalez, Leon, Spain, 0.20-m reflector); 11.86, 12.7, 1'.2 (J. J. Gonzalez, Leon, Spain, 0.20-m reflector); Feb. 18.90, 12.5, 1'.2 (M. L. Paradowski, Lublin, Poland, 0.25-m reflector); 17.81, 12.6, >2'.4 (E. Brezina and J. Srba, Vsetin, Czech Republic, 0.15-m reflector + CCD + R filter); 16.89, 12.2, & 1'.5 (M. L. Paradowski, Lublin, Poland, 0.20-m reflector); 4.84, 12.5, 0'.8 (J. J. Gonzalez, Asturias, Spain, 0.20-m reflector); 2006 Dec. 23.44, [13.4, ! 0'.6 (S. Yoshida, Gunma, Japan, 0.40-m reflector); 22.53, 13.1, 1'.2 (S. Yoshida, Gunma, Japan, 0.40-m reflector); 15.98, 13.0, 1' (M. L. Paradowski, Lublin, Poland, 20-cm reflector); Nov. 24.63, 12.4, 1'.6 (Y. Nagai, Gunma, Japan, 300-mm camera lens + CCD); 21.54, 12.5*, 2'.0 (M. Tsumura, Wakayama, Japan, 35-cm reflector + CCD); 18.01, 12.6, 1' (M. L. Paradowski, Lublin, Poland, 0.20-m reflector); 15.77, 12.5, 1'.5 (M. Lehky, Hradec Kralove, Czech Republic, 0.42-m reflector); 15.08, [12.1, -- (A. Amorim, Florianopolis, Brazil, 18-cm reflector); 11.93, 12.3, 1' (J. M. San Juan, Avila, Spain, 0.32-m reflector); 11.93, 12.1, 2' (J. Carvajal, Avila, Spain, 0.32-m reflector); 3.05, 12.2, 1'.0 (L. A. Mansilla, Obs. Teide, Canary Is., 200-mm camera lens + CCD); COMET 32P/Comas Sola Total-magnitude and coma-diameter estimates (visual unless otherwise noted): 2006 Mar. 5.37, 16.9, +0'.4 (E. Guido and G. Sostero, remotely near Mayhill, NM, U.S.A., 25-cm reflector + CCD); Feb. 7.12, 15.8, +0'.5 (R. Ligustri, Talmassons, Italy, 35-cm reflector + CCD); 6.45, 16.3, 0'.4 (E. Guido and G. Sostero, remotely near Mayhill, NM, U.S.A., 25-cm reflector + CCD + Johnson V filter); 4.84, 15.7, 0'.5 (K. Yoshimoto, Yamaguchi, Japan, 15-cm reflector + CCD); COMET 41P/Tuttle-Giacobini-Kresak Total-magnitude and coma-diameter estimates (visual unless otherwise noted): 2006 Aug. 27.89, 12.7, 2' (J. J. Gonzalez, Leon, Spain, 20-cm reflector); 21.88, 12.8, 1'.5 (J. Carvajal, Avila, Spain, 32-cm reflector); COMET 46P/Wirtanen Total-magnitude and coma-diameter estimates (visual unless otherwise noted): 2007 Aug. 13.07, [15.4, ! 0'.5 (J. Carvajal, Avila, Spain, 0.45-m reflector); 5.96, [17.8, ! 0'.2 (A. Baransky, Lisnyky, Ukraine, 0.70-m reflector + CCD); 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): 2007 Sep. 18.10, 16.4, +0'.3 (A. Baransky, Lisnyky, Ukraine, 0.70-m reflector + CCD); 16.02, 13.4:, 0'.8 (M. L. Paradowski, Lublin, Poland, 0.20-m reflector); 14.93, 12.8:, 0'.7 (M. L. Paradowski, Lublin, Poland, 0.20-m reflector); 8.04, [14.9, -- (J. Carvajal, Avila, Spain, 0.45-m reflector); COMET 60P/Tsuchinshan Total-magnitude and coma-diameter estimates (visual unless otherwise noted): 2006 Mar. 20.57, 17.5*, 0'.3 (M. Tsumura, Wakayama, Japan, 35-cm reflector + CCD); COMET 65P/GUNN Total-magnitude and coma-diameter estimates (visual unless otherwise noted): 2005 Dec. 29.58, 18.6*, 0'.4 (Y. Ohshima, Nagano, Japan, 25-cm reflector + CCD); COMET 71P/Clark Total-magnitude and coma-diameter estimates (visual unless otherwise noted): 2006 Nov. 11.80, 14.9, 0'.5 (J. Carvajal, Avila, Spain, 0.32-m reflector); Oct. 25.48, 15.0*, 0'.7 (M. Tsumura, Wakayama, Japan, 35-cm reflector + CCD); 16.49, 14.3, 0'.9 (K. Yoshimoto, Hirao, Yamaguchi, Japan, 15-cm reflector + CCD); Sep. 27.44, 12.6, 0'.9 (S. Yoshida, Gunma, Japan, 40-cm reflector); 19.53, 14.3*, 0'.4 (M. Tsumura, Wakayama, Japan, 35-cm reflector + CCD); 11.04, 12.6, 1' (W. Robledo, Pilar, Argentina, 20-cm reflector); COMET 73P/SCHWASSMANN-WACHMANN [component C presumed or stated] Total-magnitude and coma-diameter estimates (visual unless otherwise noted): 2006 Oct. 26.63, 15.8*, 0'.5 (M. Tsumura, Wakayama, Japan, 35-cm reflector + CCD); 16.56, 15.3, 0'.7 (K. Yoshimoto, Hirao, Yamaguchi, Japan, 15-cm reflector + CCD); COMET 76P/West-Kohoutek-Ikemura Total-magnitude and coma-diameter estimates (visual unless otherwise noted): 2006 Dec. 22.59, [14.2, ! 0'.6 (S. Yoshida, Gunma, Japan, 0.40-m reflector); 16.02, [13.5, ! 1' (M. L. Paradowski, Lublin, Poland, 20-cm reflector); 3.19, 12.7:, & 1' (M. L. Paradowski, Lublin, Poland, 0.20-m reflector); Nov. 21.68, 15.8*, 0'.4 (M. Tsumura, Wakayama, Japan, 35-cm reflector + CCD); 18.43, 16.2, +0'.5 (E. Guido and G. Sostero, near Mayhill, NM, U.S.A., 25-cm reflector + CCD); Oct. 25.72, 16.5*, 0'.3 (M. Tsumura, Wakayama, Japan, 35-cm reflector + CCD); COMET 84P/Giclas Total-magnitude and coma-diameter estimates (visual unless otherwise noted): 2006 Dec. 23.60, 14.1, 0'.6 (S. Yoshida, Gunma, Japan, 0.40-m reflector); Nov. 21.65, 16.2*, 0'.4 (M. Tsumura, Wakayama, Japan, 35-cm reflector + CCD); Oct. 25.70, 17.3*, 0'.3 (M. Tsumura, Wakayama, Japan, 35-cm reflector + CCD); 18.41, 17.2, +0'.3 (E. Guido and G. Sostero, near Mayhill, NM, U.S.A., 25-cm reflector + CCD; stellar appearance); 8.07, 17.0, +0'.3 (A. Baransky, Lisnyky, Ukraine, 70-cm reflector + CCD); Sep. 15.99, 16.8, 0'.3 (A. Baransky, Lisnyky, Ukraine, 70-cm reflector + CCD); COMET 87P/Bus Total-magnitude and coma-diameter estimates (visual unless otherwise noted): 2007 Apr. 5.93, 18.0, +0'.2 (A. Baransky, Lisnyky, Ukraine, 0.70-m reflector + CCD); COMET 93P/Lovas Total-magnitude and coma-diameter estimates (visual unless otherwise noted): 2007 Sep. 20.89, 13.2, 0'.6 (W. Hasubick, Buchloe, Germany, 44-cm reflector); 16.00, 12.7:, 1'.8 (M. L. Paradowski, Lublin, Poland, 0.20-m reflector); 11.09, 14.4, +0'.5 (L. A. Mansilla, Obs. Teide, Canary Is., 200-mm camera lens + CCD); 10.18, 14.3, 0'.5 (J. J. Gonzalez, Leon, Spain, 0.20-m reflector); 8.03, 14.4, 0'.5 (J. Carvajal, Avila, Spain, 0.45-m reflector); Aug. 23.90, 15.6, +0'.3 (A. Baransky, Lisnyky, Ukraine, 0.70-m reflector + CCD); 13.10, [15.1, ! 0'.5 (J. Carvajal, Avila, Spain, 0.45-m reflector); COMET 96P/Machholz Total-magnitude and coma-diameter estimates (visual unless otherwise noted): 2007 June 26.08, 13.7, 0'.7 (J. J. Gonzalez, Leon, Spain, 0.20-m reflector); 19.09, 12.6, 0'.8 (L. A. Mansilla, Obs. Teide, Canary Is., 200-mm camera lens + CCD); May 26.72, 12.8, 0'.8 (S. Yoshida, Kita-karuizawa, Gunma, Japan, 0.40-m reflector); 19.75, 12.2, 1'.3 (Y. Nagai, Gunma, Japan, 0.32-m reflector); 16.03, 14.4, +0'.7 (A. Baransky, Lisnyky, Ukraine, 0.70-m reflector + CCD); 15.02, 14.2, +0'.7 (A. Baransky, Lisnyky, Ukraine, 0.70-m reflector + CCD); 13.00, 11.8, & 1' (M. L. Paradowski, Lublin, Poland, 0.20-m reflector; haze; interference from nearby 9.9-mag star); 9.05, 10.9, 1'.5 (J. J. Gonzalez, Leon, Spain, 0.20-m reflector); 2.77, 11.3, 1'.9 (Y. Nagai, Gunma, Japan, 300-mm camera lens + CCD); Apr. 29.76, 10.9, 1'.6 (S. Yoshida, Gunma, Japan, 0.40-m reflector); 28.76, 10.7, 2'.2 (S. Yoshida, Gunma, Japan, 0.40-m reflector); 25.77, 10.3, 2'.2 (Y. Nagai, Gunma, Japan, 0.32-m reflector); 22.17, 8.8, 3' (J. J. Gonzalez, Asturias, Spain, 25x100 binoculars; 0.1-deg tail); 22.10, 9.0, 2'.5 (W. Hasubick, Buchloe, Germany, 10-cm refractor); 22.05, 9.1, 5' (M. L. Paradowski, Lublin, Poland, 0.20-m reflector; alt. 11.6 deg); 21.07, 9.4, 4' (M. L. Paradowski, Lublin, Poland, 0.20-m reflector; alt. 13.2 deg); 20.12, 8.7, 2'.5 (A. Kammerer, Malsch, Germany, 0.20-m reflector; alt. 13 deg); 20.07, 9.1, 2'.0 (B. H. Granslo, Fjellhamar, Norway, 0.20-m reflector; alt. 9 deg., twilight); 19.12, 8.5, 2'.5 (A. Kammerer, Malsch, Germany, 0.20-m reflector; alt. 12 deg); 18.16, 8.2, 3' (J. J. Gonzalez, Leon, Spain, 25x100 binoculars); 17.12, 8.0, 2'.5 (A. Kammerer, Malsch, Germany, 0.20-m reflector; twilight; alt. 11 deg); 17.09, 8.5, 1'.5 (B. H. Granslo, Fjellhamar, Norway, 0.20-m reflector; alt. 9 deg., twilight); 16.07, 8.1, 4'.6 (M. L. Paradowski, Lublin, Poland, 0.20-m reflector; alt. 6.2 deg); 14.10, [8.5, -- (B. H. Granslo, Fjellhamar, Norway, 0.07-m refractor; alt. 7 deg., twilight); 14.09, 8.0, &2' (M. L. Paradowski, Lublin, Poland, 0.20-m reflector; twilight; alt. 8.6 deg); 13.18, 7.2, 3' (J. J. Gonzalez, Leon, Spain, 25x100 binoculars); 11.11, [6.0, -- (B. H. Granslo, Fjellhamar, Norway, 0.07-m refractor; alt. 5 deg., twilight); COMET 99P/Kowal Total-magnitude and coma-diameter estimates (visual unless otherwise noted): 2005 Nov. 30.76, 17.8*, 0'.5 (Y. Ohshima, Nagano, Japan, 25-cm reflector + CCD); Feb. 13.58, 19.1, 0'.3 (A. Nakamura, Kuma Kogen, Ehime, Japan, 60-cm reflector + CCD); COMET 101P/Chernykh Total-magnitude and coma-diameter estimates (visual unless otherwise noted): 2006 Jan. 3.40, 16.4*, 0'.4 (M. Tsumura, Wakayama, Japan, 35-cm reflector + CCD); 2005 Dec. 29.52, 15.5*, 0'.5 (Y. Ohshima, Nagano, Japan, 25-cm reflector + CCD); COMET 102P/Shoemaker Total-magnitude and coma-diameter estimates (visual unless otherwise noted): 2006 Sep. 19.70, 19.0*, 0'.3 (M. Tsumura, Wakayama, Japan, 35-cm reflector + CCD); Aug. 25.07, [15.2, 1' (J. Carvajal, Avila, Spain, 45-cm reflector); COMET 110P/Hartley Total-magnitude and coma-diameter estimates (visual unless otherwise noted): 2007 Sep. 8.05, [15.3, -- (J. Carvajal, Avila, Spain, 0.45-m reflector); Aug. 4.03, 18.3, +0'.3 (A. Baransky, Lisnyky, Ukraine, 0.70-m reflector + CCD); COMET 112P/Urata-Niijima Total-magnitude and coma-diameter estimates (visual unless otherwise noted): 2006 Oct. 27.64, 16.5*, 0'.3 (M. Tsumura, Wakayama, Japan, 35-cm reflector + CCD); 18.12, 16.4, 0'.3 (A. Baransky, Lisnyky, Ukraine, 70-cm reflector + CCD); 16.64, 16.5, 0'.4 (K. Yoshimoto, Hirao, Yamaguchi, Japan, 15-cm reflector + CCD); COMET 114P/Wiseman-Skiff Total-magnitude and coma-diameter estimates (visual unless otherwise noted): 2006 Oct. 8.09, 16.5, +0'.3 (A. Baransky, Lisnyky, Ukraine, 70-cm reflector + CCD); COMET 117P/Helin-Roman-Alu Total-magnitude and coma-diameter estimates (visual unless otherwise noted): 2006 Oct. 26.55, 15.0*, 0'.4 (M. Tsumura, Wakayama, Japan, 35-cm reflector + CCD); 16.51, 14.3, 0'.9 (K. Yoshimoto, Hirao, Yamaguchi, Japan, 15-cm reflector + CCD); COMET 119P/Parker-Hartley Total-magnitude and coma-diameter estimates (visual unless otherwise noted): 2006 Jan. 28.61, 17.6, 0'.5 (Y. Ohshima, Nagano, Japan, 25-cm reflector + CCD); 23.77, [15.2, -- (J. Srba, Vsetin, Czech Republic, 6.3-cm reflector + CCD); COMET 128P/Shoemaker-Holt Total-magnitude and coma-diameter estimates (visual unless otherwise noted): 2006 Sep. 14.07, 18.3, 0'.2 (A. Baransky, Lisnyky, Ukraine, 70-cm reflector + CCD) COMET 141P/Machholz (component A presumed) Total-magnitude and coma-diameter estimates (visual unless otherwise noted): 2006 Apr. 20.48, 14.5*, 0'.7 (M. Tsumura, Wakayama, Japan, 35-cm reflector + CCD); COMET 169P/2002 EX12 (NEAT) Total-magnitude and coma-diameter estimates (visual unless otherwise noted): 2006 Jan. 28.74, 18.7, 0'.5 (Y. Ohshima, Nagano, Japan, 25-cm reflector + CCD); 8.79, 18.7*, 0'.2 (M. Tsumura, Wakayama, Japan, 35-cm reflector + CCD); COMET 171P/Spahr Total-magnitude and coma-diameter estimates (visual unless otherwise noted): 2006 Jan. 8.77, 18.8*, 0'.3 (M. Tsumura, Wakayama, Japan, 35-cm reflector + CCD); 2005 Nov. 30.72, 17.5*, 0'.6 (Y. Ohshima, Nagano, Japan, 25-cm reflector + CCD); COMET 173P/Mueller Total-magnitude and coma-diameter estimates (visual unless otherwise noted): 2006 Nov. 21.57, 17.1*, 0'.2 (M. Tsumura, Wakayama, Japan, 35-cm reflector + CCD); COMET 174P/Echeclus Total-magnitude and coma-diameter estimates (visual unless otherwise noted): 2006 Apr. 28.68, 16.7, 0'.5 (Y. Ohshima, Nagano, Japan, 25-cm reflector + CCD); 25.52, 15.0*, 0'.5 (M. Tsumura, Wakayama, Japan, 35-cm reflector + CCD); 16.53, 15.7*, 0'.5 (M. Tsumura, Wakayama, Japan, 35-cm reflector + CCD); 2.38, 15.7, +0'.7 (E. Guido and G. Sostero, remotely near Mayhill, NM, U.S.A., 25-cm reflector + CCD); Mar. 20.60, 14.6*, 0'.8 (M. Tsumura, Wakayama, Japan, 35-cm reflector + CCD); 5.40, 15.4, +0'.7 (E. Guido and G. Sostero, remotely near Mayhill, NM, U.S.A., 25-cm reflector + CCD); COMET 177P/2006 M3 (BARNARD) Total-magnitude and coma-diameter estimates (visual unless otherwise noted): 2006 Nov. 16.38, 17.0, +0'.2 (E. Guido and G. Sostero, remotely near Mayhill, NM, U.S.A., 25-cm reflector + CCD); Oct. 31.40, 12.2, 1'.2 (S. Yoshida, Gunma, Japan, 40-cm reflector; moonlight); 31.03, 11.7, 3' (M. Reszelski, Szamotuly-Galowo, Poland, 41.0-cm reflector); 29.86, 11.6, 2'.0 (M. Reszelski, Szamotuly-Galowo, Poland, 41.0-cm reflector); 27.49, 14.7*, 0'.5 (M. Tsumura, Wakayama, Japan, 35-cm reflector + CCD); COMET 178P/Hug-Bell Total-magnitude and coma-diameter estimates (visual unless otherwise noted): 2006 Nov. 21.72, 17.3*, 0'.2 (M. Tsumura, Wakayama, Japan, 35-cm reflector + CCD); Oct. 8.02, 17.9, +0'.2 (A. Baransky, Lisnyky, Ukraine, 70-cm reflector + CCD); COMET 181P/2006 U4 (Shoemaker-Levy) Total-magnitude and coma-diameter estimates (visual unless otherwise noted): 2006 Dec. 23.39, [13.1, ! 0'.8 (S. Yoshida, Gunma, Japan, 0.40-m reflector); 9.74, 12.8, 1'.2 (M. L. Paradowski, Lublin, Poland, 20-cm reflector; alt. 18 deg); Nov. 23.96, [12.6, -- (A. Amorim, Florianopolis, Brazil, 0.18-m reflector); 23.05, [12, -- (W. Robledo, Pozo del Tigre, Argentina, 0.20-m reflector); 21.38, 15.7*, 0'.4 (M. Tsumura, Wakayama, Japan, 35-cm reflector + CCD); 16.98, 12.0:, -- (A. Amorim, Florianopolis, Brazil, 0.18-m reflector); 15.95, 12.0:, -- (A. Amorim, Florianopolis, Brazil, 0.18-m reflector); 14.98, 12.0, -- (A. Amorim, Florianopolis, Brazil, 0.18-m reflector); 13.98, 12.0:, -- (A. Amorim, Florianopolis, Brazil, 0.18-m reflector); 10.98, [12.1, -- (A. Amorim, Florianopolis, Brazil, 0.18-m reflector); COMET 182P/LONEOS Total-magnitude and coma-diameter estimates (visual unless otherwise noted): 2007 Mar. 25.08, 17.9, +0'.1 (A. Baransky, Lisnyky, Ukraine, 0.70-m reflector + CCD); 2006 Dec. 15.94, 13.2, 1'.4 (M. L. Paradowski, Lublin, Poland, 20-cm reflector; alt. 20 deg); COMET 185P/Petriew Total-magnitude and coma-diameter estimates (visual unless otherwise noted): 2007 Mar. 16.85, 11.0, 2' (J. J. Gonzalez, Leon, Spain, 0.20-m reflector; alt. 8 deg; zodiacal light); 10.83, 11.2, 2'.0 (J. J. Gonzalez, Leon, Spain, 0.20-m reflector; alt. 12 deg; zodiacal light); Feb. 18.73, 11.2:, & 1'.5 (M. L. Paradowski, Lublin, Poland, 0.25-m reflector; interference from Venus and zodiacal light; alt. 9 deg); 14.80, 11.7, 1'.2 (J. J. Gonzalez, Asturias, Spain, 0.20-m reflector); 12.80, 11.8, 1'.2 (J. J. Gonzalez, Asturias, Spain, 0.20-m reflector); COMET 188P/LINEAR-Mueller Total-magnitude and coma-diameter estimates (visual unless otherwise noted): 2007 Sep. 17.98, 16.1, +0'.3 (A. Baransky, Lisnyky, Ukraine, 0.70-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);
