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IAUC 5426: 1992 AC

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                                                  Circular No. 5426
Central Bureau for Astronomical Telegrams
INTERNATIONAL ASTRONOMICAL UNION
Postal Address: Central Bureau for Astronomical Telegrams
Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
Telephone 617-495-7244/7440/7444 (for emergency use only)
TWX 710-320-6842 ASTROGRAM CAM     EASYLINK 62794505
MARSDEN or GREEN@CFA.BITNET    MARSDEN or GREEN@CFAPS2.SPAN


1992 AC
     The following observations are available of a fast-moving
asteroidal object discovered by M. Koishikawa:

     1992 UT             R.A. (2000) Decl.       Mag.   Observer
     Jan.  3.61840    8 51 46.0    + 5 18 05     13.5   Akiyama
           3.62917    8 51 47.1    + 5 18 25              "
           5.70278    8 55 25.15   + 6 24 56.6   14     Koishikawa
           5.72361    8 55 27.17   + 6 25 39.4            "
           7.71962    8 59 01.41   + 7 36 24.6   11     Kushida
           7.73715    8 59 03.13   + 7 37 05.8   13.0   Sugie
           7.74062    8 59 03.49   + 7 37 11.7          Kushida
           7.74479    8 59 03.93   + 7 37 22.7          Sugie

M. Akiyama and T. Furuta (Susono).  Prediscovery observations.
M. Koishikawa (Sendai Observatory, Ayashi Station).  0.20-m reflector.
Y. Kushida (Yatsugatake South Base Observatory).
A. Sugie (Dynic Astronomical Observatory).  0.25-m f/3.4 Schmidt.

     Orbital elements by S. Nakano from the above observations:

     T = 1992 Feb. 16.671 TT          Peri. =  25.352
     e = 0.41585                      Node  = 121.788   2000.0
     q = 1.21421 AU                   Incl. =  15.941
       a =  2.07858 AU     n = 0.328892     P =   3.00 years

1991/92     R. A. (2000) Decl.     Delta      r    Elong. Phase      V
Dec. 30     8 43.81    + 3 13.8    0.380    1.307  142.9   27.0     13.7
Jan.  4     8 52.42    + 5 30.0    0.348    1.289  147.1   24.5     13.4
      9     9 01.35    + 8 25.5    0.320    1.274  151.7   21.5     13.1
     14     9 10.74    +12 03.5    0.296    1.260  156.4   18.2     12.8
     19     9 20.75    +16 23.5    0.276    1.248  160.8   15.1     12.5
     24     9 31.49    +21 20.3    0.261    1.237  163.8   12.9     12.3
     29     9 43.03    +26 42.1    0.252    1.229  163.8   12.9     12.2
Feb.  3     9 55.41    +32 11.0    0.248    1.222  160.7   15.5     12.3
      8    10 08.59    +37 26.2    0.249    1.217  155.7   19.5     12.4
     13    10 22.45    +42 09.3    0.254    1.215  150.3   23.8     12.6
     18    10 36.72    +46 07.8    0.264    1.214  145.1   27.8     12.8


1992 January 8                 (5426)             Daniel W. E. Green

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