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M.P.E.C. 2007-S23 Issued 2007 Sept. 19, 15:20 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 P/2007 R1 (LARSON)
Observations:
PK07R010 C2007 09 12.89989 00 07 18.73 +01 15 10.8 19.0 N ES023215
PK07R010 C2007 09 12.90095 00 07 18.70 +01 15 11.0 19.0 N ES023215
PK07R010 C2007 09 12.90200 00 07 18.67 +01 15 11.3 18.6 N ES023215
PK07R010 C2007 09 13.31501 00 07 07.84 +01 13 27.3 18.2 T ES023699
PK07R010 C2007 09 13.34063 00 07 07.03 +01 13 19.5 ES023699
PK07R010 C2007 09 13.36622 00 07 06.40 +01 13 12.2 ES023699
PK07R010 C2007 09 13.39182 00 07 05.61 +01 13 06.4 ES023699
PK07R010 C2007 09 14.00276 00 06 49.71 +01 10 30.9 18.6 N ES023J51
PK07R010 C2007 09 14.01557 00 06 49.29 +01 10 27.4 18.7 N ES023J51
PK07R010 C2007 09 14.02839 00 06 48.96 +01 10 24.5 18.8 N ES023J51
PK07R010 C2007 09 15.67968 00 06 04.71 +01 03 15.7 ES023349
PK07R010 C2007 09 15.68692 00 06 04.52 +01 03 14.3 18.3 T ES023349
PK07R010 C2007 09 15.75420 00 06 02.73 +01 02 59.1 19.4 T ES023D35
PK07R010 C2007 09 15.77231 00 06 02.22 +01 02 54.3 19.2 T ES023D35
PK07R010 C2007 09 15.79045 00 06 01.74 +01 02 49.5 19.3 T ES023D35
PK07R010 C2007 09 15.87936 00 05 59.40 +01 02 25.7 19.0 N ES023B42
PK07R010 C2007 09 15.96419 00 05 57.14 +01 02 03.6 18.7 N ES023157
PK07R010 C2007 09 16.23781 00 05 49.82 +01 00 52.9 19.2 T ES023704
PK07R010 C2007 09 16.24959 00 05 49.48 +01 00 47.8 20.0 T ES023704
PK07R010 C2007 09 16.27316 00 05 48.82 +01 00 44.5 19.6 T ES023704
PK07R010 C2007 09 16.28497 00 05 48.46 +01 00 40.4 19.8 T ES023704
PK07R010 C2007 09 16.68959 00 05 37.59 +00 58 56.7 17.4 T ES023900
PK07R010 C2007 09 16.69321 00 05 37.26 +00 58 56.3 ES023900
PK07R010 C2007 09 18.64300 00 04 44.52 +00 50 23.7 17.6 T ES023900
PK07R010 C2007 09 18.64520 00 04 44.28 +00 50 22.3 ES023900
Observer details:
157 Frasso Sabino. Observers R. Haver, P. Caponnetto. Measurer R. Haver.
0.37-m f/5.8 Cassegrain + CCD.
215 Buchloe. Observer W. Hasubick. 0.44-m f/4.6 reflector + CCD.
349 Ageo. Observer K. Kadota. 0.25-m f/5.0 reflector + CCD.
699 Lowell Observatory-LONEOS. Observer B. A. Skiff. 0.59-m LONEOS Schmidt
+ 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.
900 Moriyama. Observer Y. Ikari. 0.25-m f/6.3 Schmidt-Cassegrain + CCD.
B42 Vitebsk. Observer V. Nevski. 0.3-m f/5.0 reflector + CCD.
D35 Lulin Observatory. Observers Q.-z. Ye, H.-C. Lin, C.-S. Lin, C.-Y. Shih.
Measurer Q.-z. Ye. 0.41-m Ritchey-Chretien + CCD.
J51 Observatorio Atlante, Tenerife. Observer J. A. Henriquez. 0.2-m f/9
Cassegrain + CCD.
Orbital elements:
P/2007 R1 (Larson)
T 2007 Aug. 13.146 TT MPC
q 4.33338 (2000.0) P Q
n 0.066266 Peri. 173.787 +0.996835 +0.079394
a 6.04798 Node 181.674 -0.077521 +0.959843
e 0.28350 Incl. 7.801 -0.017599 +0.269069
P 14.9
From 64 observations 2007 Sept. 4-18.
Ephemeris:
P/2007 R1 (Larson)
Date TT R. A. (2000) Decl. Delta r Elong. Phase m1 m2
2007 09 17 00 05.49 +00 57.6 3.338 4.336 172.0 1.9 17.0
2007 09 27 00 00.89 +00 13.5 3.337 4.338 176.9 0.7 17.0
2007 10 07 23 56.43 -00 29.7 3.364 4.340 165.7 3.3 17.0
2007 10 17 23 52.52 -01 08.9 3.421 4.343 154.7 5.6 17.0
2007 10 27 23 49.52 -01 41.5 3.504 4.346 143.8 7.8 17.1
2007 11 06 23 47.68 -02 05.6 3.610 4.349 133.3 9.6 17.2
2007 11 16 23 47.16 -02 20.1 3.735 4.353 123.0 11.0 17.2
2007 11 26 23 48.04 -02 24.6 3.875 4.358 113.1 12.0 17.3
Further observations of this comet are desirable.
Brian G. Marsden (C) Copyright 2007 MPC M.P.E.C. 2007-S23
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