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IAU Minor Planet Center

Minor Planet Center

MPEC 1997-S09: 1997 RX9

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M.P.E.C. 1997-S09                                Issued 1997 Sept. 26, 13:51 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

                                   1997 RX9

Observations:
     J97R09X* C1997 09 07.28714 23 00 29.42 -06 20 24.2          24.0 R      675
     J97R09X  C1997 09 07.43086 23 00 28.78 -06 20 29.2                      675
     J97R09X  C1997 09 08.25432 23 00 25.13 -06 20 57.9                      675
     J97R09X  C1997 09 08.33580 23 00 24.77 -06 21 00.9                      675

Observer details:
675 Palomar Mountain.  Observers B. Gladman, P. Nicholson, J. A. Burns.
    Measurer B. Gladman.  5-m Hale Telescope + CCD.

Orbital elements:
1997 RX9
Assumed circular orbit
Epoch 1997 Aug. 20.0 TT = JDT 2450680.5                 Marsden
                         (2000.0)            P               Q
n   0.00363143  Arg.lat.  179.91368     +0.96039444     +0.24014325
a  41.9196100      Node   163.89504     -0.25595529     +0.96076939
e   0.0000000      Incl.   30.62916     -0.11013362     -0.13875659
P 271              H    8.0           G   0.15
From 4 observations 1997 Sept. 7-8.

Ephemeris:
1997 RX9                 a,e,i = 41.92, 0.00, 31
Date    TT    R. A. (2000) Decl.     Delta      r     Elong.  Phase     V
1997 09 19    22 59.63   -06 27.2   40.938   41.920   167.5     0.3    24.2
1997 09 29    22 58.94   -06 32.7   40.992   41.920   157.5     0.5    24.3
1997 10 09    22 58.30   -06 37.9   41.074   41.920   147.5     0.7    24.3
1997 10 19    22 57.75   -06 42.5   41.181   41.920   137.4     0.9    24.3
1997 10 29    22 57.30   -06 46.4   41.310   41.920   127.3     1.1    24.4
1997 11 08    22 56.99   -06 49.6   41.457   41.920   117.2     1.2    24.4
1997 11 18    22 56.81   -06 51.9   41.618   41.920   107.1     1.3    24.4
1997 11 28    22 56.77   -06 53.3   41.788   41.920    97.0     1.3    24.4
1997 12 08    22 56.90   -06 53.7   41.962   41.920    86.9     1.3    24.4
1997 12 18    22 57.17   -06 53.1   42.134   41.920    76.8     1.3    24.4
1997 12 28    22 57.59   -06 51.7   42.299   41.920    66.7     1.2    24.4

Brian G. Marsden             (C) Copyright 1997 MPC           M.P.E.C. 1997-S09

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