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M.P.E.C. 2008-C21 Issued 2008 Feb. 4, 00:25 UT
The Minor Planet Electronic Circulars contain information on unusual
minor planets and routine data on comets. They are published
on behalf of Commission 20 of the International Astronomical Union by the
Minor Planet Center, Smithsonian Astrophysical Observatory,
Cambridge, MA 02138, U.S.A.
Prepared using the Tamkin Foundation Computer Network
MPC@CFA.HARVARD.EDU
URL http://www.cfa.harvard.edu/iau/mpc.html ISSN 1523-6714
COMET C/2008 C1 (CHEN-GAO)
Observations:
CK08C010 2008 01 30.58240 22 51 06.89 +62 15 22.0 15.4 N EC021C42
CK08C010 2008 01 31.59073 22 57 05.01 +62 14 39.3 15.7 N EC021C42
CK08C010 2008 02 01.66713 23 03 33.84 +62 13 07.1 16.0 N EC021C42
CK08C010 2008 02 02.64737 23 09 33.45 +62 11 19.2 16.6 N EC021C42
CK08C010 2008 02 02.65466 23 09 35.36 +62 11 16.0 16.5 N EC021C42
CK08C010 2008 02 02.66146 23 09 38.38 +62 11 00.4 16.4 N EC021C42
CK08C010 2008 02 02.66891 23 09 41.83 +62 11 04.7 16.4 N EC021C42
CK08C010 C2008 02 03.01172 23 11 48.07 +62 10 25.8 17.6 T EC021H55
CK08C010 C2008 02 03.01639 23 11 49.79 +62 10 25.0 17.4 T EC021H55
CK08C010 C2008 02 03.02146 23 11 51.70 +62 10 24.6 17.4 T EC021H55
CK08C010 C2008 02 03.06788 23 12 08.91 +62 10 18.4 16.6 T EC021448
CK08C010 C2008 02 03.07005 23 12 09.71 +62 10 17.6 16.8 T EC021448
CK08C010 C2008 02 03.07221 23 12 10.53 +62 10 17.5 17.1 T EC021448
CK08C010 C2008 02 03.07437 23 12 11.76 +62 10 16.9 EC021448
CK08C010 C2008 02 03.07653 23 12 11.88 +62 10 16.7 EC021448
CK08C010 C2008 02 03.08550 23 12 15.52 +62 10 17.0 17.1 T EC021704
CK08C010 C2008 02 03.09867 23 12 20.31 +62 10 14.2 17.2 T EC021704
CK08C010 C2008 02 03.11121 23 12 24.96 +62 10 13.4 17.4 T EC021704
CK08C010 C2008 02 03.12375 23 12 29.71 +62 10 09.9 17.3 T EC021704
CK08C010 C2008 02 03.12811 23 12 30.97 +62 10 11.2 EC021701
CK08C010 C2008 02 03.13367 23 12 32.73 +62 10 06.1 EC021701
CK08C010 C2008 02 03.13568 23 12 34.20 +62 10 07.8 17.0 T EC021704
CK08C010 C2008 02 03.13866 23 12 35.18 +62 10 06.3 15.8 T EC021673
CK08C010 C2008 02 03.13922 23 12 35.77 +62 10 07.4 EC021701
CK08C010 C2008 02 03.14478 23 12 37.66 +62 10 05.3 EC021701
CK08C010 C2008 02 03.14560 23 12 37.76 +62 10 05.0 EC021673
CK08C010 C2008 02 03.15034 23 12 39.04 +62 10 04.3 EC021701
CK08C010 C2008 02 03.15035 23 12 39.71 +62 10 04.5 16.8 N EC021H06
CK08C010 C2008 02 03.15359 23 12 40.70 +62 10 03.8 EC021673
CK08C010 C2008 02 03.15436 23 12 41.01 +62 10 03.1 17.1 N EC021H06
CK08C010 C2008 02 03.15589 23 12 41.55 +62 10 05.5 EC021701
CK08C010 C2008 02 03.16244 23 12 43.99 +62 10 02.7 EC021673
CK08C010 C2008 02 03.43554 23 14 26.04 +62 09 22.5 EC021D70
CK08C010 C2008 02 03.46726 23 14 37.90 +62 09 17.0 EC021D70
CK08C010 C2008 02 03.48012 23 14 42.76 +62 09 14.4 14.6 T EC021D70
CK08C010 C2008 02 03.74055 23 16 20.58 +62 08 33.7 15.6 T EC021A97
CK08C010 C2008 02 03.75141 23 16 24.68 +62 08 30.4 15.2 T EC021A97
CK08C010 C2008 02 03.75981 23 16 27.94 +62 08 30.0 15.3 T EC021A97
CK08C010 C2008 02 03.76280 23 16 28.97 +62 08 28.6 EC021557
CK08C010 C2008 02 03.76465 23 16 29.66 +62 08 28.2 EC021557
CK08C010 C2008 02 03.76651 23 16 30.36 +62 08 27.8 EC021557
CK08C010 C2008 02 03.76836 23 16 31.07 +62 08 27.5 EC021557
CK08C010 C2008 02 03.77021 23 16 31.75 +62 08 27.1 EC021557
CK08C010 C2008 02 03.77208 23 16 32.45 +62 08 26.8 EC021557
CK08C010 C2008 02 03.77423 23 16 33.33 +62 08 27.0 15.3 T EC021A97
CK08C010 C2008 02 03.83377 23 16 56.59 +62 08 13.5 EC021349
CK08C010 C2008 02 03.83545 23 16 57.16 +62 08 13.5 EC021349
CK08C010 C2008 02 03.83713 23 16 57.86 +62 08 13.4 13.5 T EC021349
Observer details:
349 Ageo. Observer K. Kadota. 0.25-m f/5.0 reflector + CCD.
448 Desert Moon Observatory. Observer B. L. Stevens. 0.3-m
Schmidt-Cassegrain + CCD.
557 Ondrejov. Observer K. Hornoch. 0.65-m f/3.6 reflector + CCD.
673 Table Mountain Observatory, Wrightwood. Observer J. Young. 0.61-m f/16
Cassegrain + CCD.
701 Junk Bond Observatory, Sierra Vista. Observer D. Healy. 0.81-m f/4.4
Ritchey-Chretien + CCD.
704 Lincoln Laboratory ETS, New Mexico. Observers M. Bezpalko, D. Torres,
R. Kracke, G. Spitz, J. Kistler. Measurers J. Stuart, S. Scruggs. 1.0-m
f/2.15 reflector + CCD.
A97 Stammersdorf. Observer W. Vollmann. 0.13-m f/4 refractor + CCD.
C42 Xingming Observatory, Mt. Nanshan. Observer X. Gao. Measurers J. Beize,
T. Chen. 0.07-m f/2.8 lens and camera.
D70 Tosa. Observer S. Shimomoto. 0.20-m f/6.3 Schmidt-Cassegrain + CCD.
H06 RAS Observatory, Mayhill. Observer M. Suzuki. 0.25-m f/3.4 reflector
+ CCD.
H55 Astronomical Research Observatory, Charleston. Observer R. Holmes.
Measurer H. Devore. 0.61-m f/4.0 astrograph + CCD.
Orbital elements:
C/2008 C1 (Chen-Gao)
T 2008 Apr. 16.835 TT MPC
q 1.26166 (2000.0) P Q
Peri. 180.956 -0.619086 -0.363397
Node 307.802 +0.726243 +0.072417
e 1.0 Incl. 61.775 +0.298839 -0.928816
From 72 observations 2008 Jan. 30-Feb. 3.
Ephemeris:
C/2008 C1 (Chen-Gao)
Date TT R. A. (2000) Decl. Delta r Elong. Phase m1 m2
2008 02 04 23 17.98 +62 07.8 1.472 1.665 82.7 36.0 13.1
2008 02 09 23 50.45 +61 44.4 1.433 1.619 81.7 37.1 12.9
2008 02 14 00 24.54 +61 00.5 1.399 1.575 80.6 38.2 12.7
2008 02 19 00 59.41 +59 51.7 1.368 1.532 79.4 39.3 12.5
2008 02 24 01 34.05 +58 14.9 1.342 1.492 78.0 40.4 12.4
2008 02 29 02 07.56 +56 09.2 1.322 1.454 76.4 41.5 12.2
2008 03 05 02 39.19 +53 35.8 1.309 1.419 74.7 42.4 12.1
2008 03 10 03 08.52 +50 37.6 1.301 1.386 73.0 43.2 12.0
2008 03 15 03 35.37 +47 19.0 1.301 1.357 71.1 43.9 11.9
2008 03 20 03 59.77 +43 44.7 1.307 1.331 69.1 44.3 11.8
2008 03 25 04 21.88 +40 00.0 1.320 1.309 67.1 44.6 11.8
Brian G. Marsden (C) Copyright 2008 MPC M.P.E.C. 2008-C21
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