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    • MPEC 1997-V03 : 1997 US2

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    M.P.E.C. 1997-V03                                Issued 1997 Nov. 1, 20:15 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 US2

                           Revision to MPEC 1997-U12

Observations:
     J97U02S  C1997 10 26.22622 03 15 52.72 +14 06 32.5          19.7        784
     J97U02S  C1997 10 26.23438 03 15 51.81 +14 06 29.0          19.9        784
     J97U02S  C1997 10 26.24496 03 15 50.68 +14 06 24.3          19.8        784
     J97U02S  C1997 10 26.25816 03 15 49.31 +14 06 18.6          18.8        784
     J97U02S  C1997 10 26.26840 03 15 48.19 +14 06 14.5          19.5        784
     J97U02S  C1997 10 26.28056 03 15 46.96 +14 06 09.9          19.6        784
     J97U02S  C1997 10 27.04701 03 14 27.78 +14 00 42.6          20.4 V      104
     J97U02S  C1997 10 27.05139 03 14 27.27 +14 00 41.4                      104
     J97U02S  C1997 10 27.05556 03 14 26.85 +14 00 39.2                      104

Observer details:
104 San Marcello Pistoiese.  Observers L. Tesi, A. Boattini, M. Tombelli.
    Measurers L. Tesi, A. Boattini, M. Tombelli, G. Forti.  0.40-m f/5
    reflector + CCD.
784 Stull Observatory, Alfred University.  Observer J. S. Weaver.  0.81-m f/4
    reflector + CCD.

Orbital elements:
1997 US2
Epoch 1997 Oct. 19.0 TT = JDT 2450740.5                 Williams
M 304.43749              (2000.0)            P               Q
n   0.49832329     Peri.   98.67412     -0.96879636     -0.24317935
a   1.5756579      Node    67.26272     +0.20203045     -0.88679372
e   0.6244310      Incl.    2.97901     +0.14358727     -0.39301489
P   1.98           H   19.5           G   0.15
From 24 observations 1997 Oct. 23-27.

Ephemeris:
1997 US2                 a,e,i = 1.58, 0.62, 3                   q = 0.5918
Date    TT    R. A. (2000) Decl.     Delta      r     Elong.  Phase     V
1997 10 29    03 10.85   +13 46.0    0.529    1.512   166.0     9.1    19.6
1997 11 03    02 59.80   +13 01.2    0.477    1.467   173.2     4.6    19.1
1997 11 08    02 46.00   +12 05.2    0.431    1.421   175.3     3.3    18.8
1997 11 13    02 29.36   +10 56.9    0.390    1.373   167.4     9.1    18.8
1997 11 18    02 09.94   +09 35.5    0.356    1.324   157.6    16.5    18.8
1997 11 23    01 48.00   +08 01.5    0.327    1.275   147.1    24.9    18.8
1997 11 28    01 24.04   +06 17.0    0.304    1.224   135.9    34.1    18.8
1997 12 03    00 58.74   +04 25.6    0.287    1.172   124.3    44.0    18.8
1997 12 08    00 32.70   +02 31.2    0.274    1.119   112.5    54.4    18.9
1997 12 13    00 06.23   +00 36.2    0.264    1.065   100.6    65.3    19.1
1997 12 18    23 39.25   -01 18.8    0.256    1.011    88.6    76.7    19.2
1997 12 23    23 11.34   -03 15.4    0.251    0.956    76.3    88.9    19.5
1997 12 28    22 41.84   -05 16.4    0.248    0.901    63.7   102.0    20.0

Gareth V. Williams           (C) Copyright 1997 MPC           M.P.E.C. 1997-V03

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