Read MPEC 2007-U64
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M.P.E.C. 2007-U65 Issued 2007 Oct. 23, 16:37 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/2007 S2 (LEMMON)
Observations:
CK07S020 C2007 10 08.42844 08 29 15.67 +19 11 02.5 18.9 T EU065704
CK07S020 C2007 10 08.43966 08 29 16.01 +19 10 59.8 19.2 T EU065704
CK07S020 C2007 10 08.45090 08 29 16.40 +19 10 58.3 19.1 T EU065704
CK07S020 C2007 10 08.46211 08 29 16.74 +19 10 55.4 19.2 T EU065704
CK07S020 C2007 10 08.47334 08 29 17.06 +19 10 53.8 19.3 T EU065704
CK07S020 C2007 10 10.04113 08 30 05.33 +19 05 53.3 17.8 N EU065585
CK07S020 C2007 10 10.04919 08 30 05.60 +19 05 48.9 17.8 N EU065585
CK07S020 C2007 10 10.05645 08 30 05.83 +19 05 43.0 18.0 N EU065585
CK07S020 C2007 10 10.06369 08 30 06.32 +19 05 39.6 17.8 N EU065585
CK07S020 C2007 10 11.44992 08 30 47.65 +19 01 16.1 19.6 T EU065704
CK07S020 C2007 10 11.46118 08 30 47.94 +19 01 13.7 19.5 T EU065704
CK07S020 C2007 10 11.47245 08 30 48.23 +19 01 12.1 19.6 T EU065704
CK07S020 C2007 10 13.45738 08 31 46.12 +18 54 53.6 19.2 T EU065703
CK07S020 C2007 10 13.46501 08 31 46.23 +18 54 51.6 19.3 T EU065703
CK07S020 C2007 10 13.47262 08 31 46.48 +18 54 49.8 19.1 T EU065703
CK07S020 C2007 10 13.48022 08 31 46.74 +18 54 48.4 19.3 T EU065703
CK07S020 C2007 10 22.15386 08 35 34.37 +18 27 59.7 EU065204
CK07S020 C2007 10 22.18621 08 35 35.12 +18 27 53.8 18.5 N EU065204
Observer details:
204 Schiaparelli Observatory. Observers L. Buzzi, M. Marinelli, V. Di Michele.
Measurer L. Buzzi. 0.36-m f/7.87 Schmidt-Cassegrain + CCD, 0.60-m f/4.64
reflector + CCD.
585 Kiev comet station. Observer A. Baransky. 0.7-m f/4 reflector + CCD.
703 Catalina Sky Survey. Observer A. R. Gibbs. Measurers E. C. Beshore,
A. Boattini, A. R. Gibbs, A. D. Grauer, R. E. Hill, R. A. Kowalski,
S. M. Larson. 0.68-m 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.
Orbital elements:
C/2007 S2 (Lemmon)
T 2008 Sept. 16.872 TT MPC
q 5.55240 (2000.0) P Q
n 0.022441 Peri. 210.654 -0.818062 -0.512879
a 12.44821 Node 296.248 +0.568762 -0.654297
e 0.55396 Incl. 16.868 +0.085341 -0.555743
P 43.9
From 81 observations 2007 Sept. 25-Oct. 22.
Ephemeris:
C/2007 S2 (Lemmon)
Date TT R. A. (2000) Decl. Delta r Elong. Phase m1 m2
2007 10 17 08 33.40 +18 43.8 5.981 5.840 77.1 9.6 18.0
2007 10 27 08 37.38 +18 13.7 5.807 5.824 86.1 9.8 18.0
2007 11 06 08 40.37 +17 46.2 5.633 5.808 95.2 9.8 17.9
2007 11 16 08 42.26 +17 21.5 5.461 5.793 104.8 9.5 17.8
2007 11 26 08 42.99 +17 00.2 5.297 5.778 114.6 8.9 17.7
2007 12 06 08 42.54 +16 42.5 5.144 5.763 124.7 8.1 17.7
2007 12 16 08 40.92 +16 28.5 5.009 5.749 135.2 6.9 17.6
2007 12 26 08 38.23 +16 18.0 4.894 5.735 145.9 5.5 17.5
Further observations of this comet are desirable.
Brian G. Marsden (C) Copyright 2007 MPC M.P.E.C. 2007-U65
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