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IAU Minor Planet Center

Minor Planet Center

MPEC 1998-B22: COMET C/1997 S2

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M.P.E.C. 1998-B22                                Issued 1998 Jan. 27, 18:02 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.

             BMARSDEN@CFA.HARVARD.EDU or GWILLIAMS@CFA.HARVARD.EDU
                   URL http://cfa-www.harvard.edu/iau/mpc.html

                                COMET C/1997 S2

Observations:
    CJ97S020  S1997 09 25.44183 11 44 51.4  -02 14 59                        249
    CJ97S020  s1997 09 25.44183 2 -0.00851569 -0.00357586 -0.00109949        249
    CJ97S020  S1997 09 25.48147 11 45 40.7  -02 13 32                        249
    CJ97S020  s1997 09 25.48147 2 -0.00851406 -0.00358460 -0.00110432        249
    CJ97S020  S1997 09 25.48976 11 45 51.9  -02 12 33                        249
    CJ97S020  s1997 09 25.48976 2 -0.00851372 -0.00358643 -0.00110533        249
    CJ97S020  S1997 09 25.52656 11 46 41.1  -02 11 37                        249
    CJ97S020  s1997 09 25.52656 2 -0.00851220 -0.00359454 -0.00110981        249
    CJ97S020  S1997 09 25.57517 11 47 46.1  -02 09 35                        249
    CJ97S020  s1997 09 25.57517 2 -0.00851017 -0.00360524 -0.00111572        249
    CJ97S020  S1997 09 25.67725 11 50 01.7  -02 06 23                        249
    CJ97S020  s1997 09 25.67725 2 -0.00850589 -0.00362769 -0.00112813        249
    CJ97S020  S1997 09 25.70169 11 50 34.7  -02 04 48                        249
    CJ97S020  s1997 09 25.70169 2 -0.00850486 -0.00363306 -0.00113110        249
    CJ97S020  S1997 09 25.71962 11 51 05.7  -02 04 38                        249
    CJ97S020  s1997 09 25.71962 2 -0.00850410 -0.00363700 -0.00113327        249
    CJ97S020  S1997 09 25.74612 11 51 39.2  -02 03 07                        249
    CJ97S020  s1997 09 25.74612 2 -0.00850297 -0.00364282 -0.00113649        249
    CJ97S020  S1997 09 25.76547 11 52 06.5  -02 02 12                        249
    CJ97S020  s1997 09 25.76547 2 -0.00850214 -0.00364707 -0.00113884        249
    CJ97S020  S1997 09 25.78142 11 52 28.5  -02 01 56                        249
    CJ97S020  s1997 09 25.78142 2 -0.00850146 -0.00365056 -0.00114078        249
    CJ97S020  S1997 09 25.86862 11 54 33.0  -01 57 41                        249
    CJ97S020  s1997 09 25.86862 2 -0.00849772 -0.00366968 -0.00115136        249
    CJ97S020  S1997 09 25.90889 11 55 37.5  -01 56 06                        249
    CJ97S020  s1997 09 25.90889 2 -0.00849597 -0.00367850 -0.00115624        249
    CJ97S020  S1997 09 25.94161 11 56 27.7  -01 53 32                        249
    CJ97S020  s1997 09 25.94161 2 -0.00849455 -0.00368566 -0.00116021        249
    CJ97S020  S1997 09 25.96684 11 57 05.1  -01 52 56                        249
    CJ97S020  s1997 09 25.96684 2 -0.00849345 -0.00369118 -0.00116327        249
    CJ97S020  S1997 09 25.98211 11 57 31.5  -01 51 54                        249
    CJ97S020  s1997 09 25.98211 2 -0.00849278 -0.00369452 -0.00116512        249
    CJ97S020  S1997 09 26.01613 11 58 23.8  -01 50 39                        249
    CJ97S020  s1997 09 26.01613 2 -0.00849129 -0.00370196 -0.00116924        249
    CJ97S020  S1997 09 26.03698 11 58 56.4  -01 49 25                        249
    CJ97S020  s1997 09 26.03698 2 -0.00849038 -0.00370651 -0.00117177        249
    CJ97S020  S1997 09 26.06545 11 59 44.7  -01 47 49                        249
    CJ97S020  s1997 09 26.06545 2 -0.00848912 -0.00371273 -0.00117522        249
    CJ97S020  S1997 09 26.11542 12 01 10.5  -01 44 22                        249
    CJ97S020  s1997 09 26.11542 2 -0.00848691 -0.00372364 -0.00118127        249
    CJ97S020  S1997 09 26.14462 12 01 58.9  -01 42 43                        249
    CJ97S020  s1997 09 26.14462 2 -0.00848561 -0.00373001 -0.00118480        249

Observer details:
249 SOHO.  SOHO-LASCO coronagraph C3.  Comet detection by D. A. Biesecker.
    Solar separations and position angles measured by D. A. Biesecker and
    C. St. Cyr, reduction to sohocentric J2000.0 R.A. and Decl. by
    G. V. Williams.

Orbital elements:
    C/1997 S2 (SOHO)
T 1997 Sept. 26.43 TT                                   Marsden
q   0.0049               (2000.0)            P               Q
                   Peri.   78.62        +0.18659        -0.98241
                   Node   359.22        -0.95966        -0.18052
e   1.0            Incl.  144.11        +0.21032        +0.04785
From 21 observations 1997 Sept. 25-26.

Brian G. Marsden             (C) Copyright 1998 MPC           M.P.E.C. 1998-B22

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