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IAU Minor Planet Center

Minor Planet Center

MPEC 2007-S52 : COMET P/2007 R1 (LARSON)

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M.P.E.C. 2007-S52                                Issued 2007 Sept. 25, 15:37 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 P/2007 R1 (LARSON)

Observations:
    PK07R010  C2007 09 17.94390 00 05 03.54 +00 53 29.3          17.7 T ES052585
    PK07R010  C2007 09 17.95073 00 05 03.45 +00 53 24.7          17.8 T ES052585
    PK07R010  C2007 09 17.95669 00 05 02.94 +00 53 23.3          17.7 T ES052585
    PK07R010  C2007 09 17.96459 00 05 02.71 +00 53 21.8          17.8 T ES052585
    PK07R010  C2007 09 19.22884 00 04 28.40 +00 47 49.4          19.5 T ES052704
    PK07R010  C2007 09 19.25277 00 04 27.82 +00 47 43.8          19.8 T ES052704
    PK07R010  C2007 09 19.27672 00 04 27.03 +00 47 36.9          19.7 T ES052704

Observer details:
585 Kiev comet station.  Observer A. Baransky.  0.7-m f/4 reflector + 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:
    P/2007 R1 (Larson)
T 2007 July 8.634 TT                                    MPC
q   4.30571              (2000.0)            P               Q
n   0.065395       Peri.  169.265       +0.987505       +0.157539
a   6.10155        Node   181.687       -0.152696       +0.950349
e   0.29433        Incl.    7.710       -0.038964       +0.268362
P  15.1
From 65 observations 2007 Sept. 4-19.

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    3.320    4.317   172.0     1.9  17.0
2007 09 27    00 00.90   +00 13.5    3.319    4.321   176.9     0.7  17.0
2007 10 07    23 56.45   -00 29.6    3.349    4.325   165.7     3.3  17.0
2007 10 17    23 52.55   -01 08.6    3.407    4.329   154.7     5.6  17.0
2007 10 27    23 49.57   -01 41.0    3.492    4.334   143.9     7.8  17.1
2007 11 06    23 47.75   -02 04.9    3.599    4.339   133.3     9.6  17.2
2007 11 16    23 47.27   -02 19.1    3.726    4.345   123.0    11.0  17.2
2007 11 26    23 48.17   -02 23.3    3.868    4.351   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-S52

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