MPEC 2007-S56 : COMET P/2007 S1 (ZHAO)
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M.P.E.C. 2007-S56 Issued 2007 Sept. 25, 15:57 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 S1 (ZHAO)
Observations:
PK07S010 C2007 09 21.68134 00 45 39.44 -02 25 25.1 18.3 T ES056D29
PK07S010 C2007 09 21.68476 00 45 39.38 -02 25 27.5 18.2 T ES056D29
PK07S010 C2007 09 21.69172 00 45 39.06 -02 25 30.4 18.1 T ES056D29
PK07S010 C2007 09 21.69183 00 45 38.92 -02 25 30.1 ES056349
PK07S010 C2007 09 21.69355 00 45 38.98 -02 25 30.5 18.3 T ES056D29
PK07S010 C2007 09 21.69545 00 45 38.83 -02 25 30.7 18.3 T ES056349
PK07S010 C2007 09 21.69787 00 45 38.91 -02 25 33.0 18.6 T ES056D29
PK07S010 C2007 09 21.69968 00 45 38.79 -02 25 33.0 18.2 T ES056D29
PK07S010 C2007 09 21.70386 00 45 38.64 -02 25 34.2 18.3 T ES056D29
PK07S010 C2007 09 21.70554 00 45 38.66 -02 25 35.1 18.4 T ES056D29
PK07S010 C2007 09 21.95409 00 45 30.48 -02 27 11.2 18.5 N ES056585
PK07S010 C2007 09 21.97087 00 45 30.27 -02 27 19.7 18.4 N ES056585
PK07S010 C2007 09 21.97737 00 45 30.13 -02 27 21.2 18.5 N ES056585
PK07S010 C2007 09 21.98986 00 45 29.55 -02 27 29.6 18.4 N ES056585
PK07S010 C2007 09 23.24442 00 44 49.01 -02 35 26.1 20.2 T ES056H55
PK07S010 C2007 09 23.24893 00 44 48.87 -02 35 27.1 20.4 T ES056H55
PK07S010 C2007 09 23.25349 00 44 48.72 -02 35 28.0 20.5 T ES056H55
Observer details:
349 Ageo. Observer K. Kadota. 0.25-m f/5.0 reflector + CCD.
585 Kiev comet station. Observers A. Baransky, A. Zhdanov. 0.7-m f/4
reflector + CCD.
D29 Purple Mountain Observatory, XuYi Station. Observers H. B. Zhao,
J. S. Yao, Y. Z. Wu, G. T. Zhaori, R. Q. Hong, L. F. Hu. Measurers
H. B. Zhao, H. Lu, G. T. Zhaori, Y. Xia, F. Zeng. 1.04-m f/1.8 Schmidt
+ CCD.
H55 Astronomical Research Observatory, Charleston. Observer R. Holmes.
0.81-m f/4.0 astrograph + CCD.
Orbital elements:
P/2007 S1 (Zhao)
T 2007 Dec. 11.231 TT MPC
q 2.49813 (2000.0) P Q
n 0.132456 Peri. 246.427 +0.877816 -0.474610
a 3.81144 Node 141.818 +0.468725 +0.823299
e 0.34457 Incl. 6.007 +0.098671 +0.311328
P 7.44
From 36 observations 2007 Sept. 8-23.
Ephemeris:
P/2007 S1 (Zhao)
Date TT R. A. (2000) Decl. Delta r Elong. Phase m1 m2
2007 09 17 00 48.00 -01 55.7 1.581 2.556 162.2 6.9 18.1
2007 09 27 00 42.70 -02 59.2 1.548 2.544 171.3 3.4 18.0
2007 10 07 00 36.72 -03 59.6 1.541 2.532 170.3 3.8 18.0
2007 10 17 00 30.97 -04 49.6 1.561 2.523 160.6 7.5 18.0
2007 10 27 00 26.39 -05 23.2 1.605 2.515 149.9 11.4 18.0
2007 11 06 00 23.65 -05 37.4 1.670 2.508 139.5 14.9 18.1
2007 11 16 00 23.16 -05 31.1 1.754 2.503 129.6 17.7 18.2
2007 11 26 00 25.09 -05 05.4 1.853 2.500 120.2 19.9 18.3
Further observations of this comet are desirable.
Brian G. Marsden (C) Copyright 2007 MPC M.P.E.C. 2007-S56
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