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IAUC 5045: 1990 MB

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                                                  Circular No. 5045
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


1990 MB
     H. E. Holt reports his discovery of a fast-moving asteroidal
object, and the following observations have been reported:

     1990 UT             R.A. (1950) Decl.       Mag.   Observer
     June 20.26631   16 51 35.45   - 2 32 05.7   17.0   Holt
          20.30486   16 51 32.24   - 2 30 57.1            "
          22.22014   16 49 08.53   - 1 35 30.4   17.0     "
          22.26163   16 49 05.28   - 1 34 20.1            "
          23.21111   16 47 57.07   - 1 07 54.2   17.0     "
          23.26631   16 47 52.87   - 1 06 23.6            "
          26.26163   16 44 31.75   + 0 12 07.5   16.2   Helin
          26.28819   16 44 29.85   + 0 12 45.9            "

H. E. Holt and D. Levy (Palomar).  0.46-m Schmidt telescope.
  Measured by C. M. Olmstead.  Communicated by E. Bowell.
E. Helin, B. Roman, and K. Lawrence (Palomar).  0.46-m Schmidt
  telescope.  Measured by Roman.

     Preliminary orbital elements from the above observations:

     T = 1990 Oct. 29.359 ET          Peri. =  97.323
     e = 0.07064                      Node  = 244.170   1950.0
     q = 1.40345 AU                   Incl. =  19.559
       a =  1.51012 AU     n = 0.531112     P =   1.86 years

     1990 ET      R.A. (1950) Decl.     Delta      r       V
     June 18    16 54.59    - 3 41.0    0.492    1.482    16.1
          23    16 48.20    - 1 13.6
          28    16 42.76    + 0 54.5    0.518    1.472    16.4
     July  3    16 38.48    + 2 41.9
           8    16 35.45    + 4 09.2    0.557    1.463    16.7
          13    16 33.70    + 5 17.4
          18    16 33.20    + 6 08.5    0.606    1.454    17.0
          23    16 33.94    + 6 44.3
          28    16 35.86    + 7 07.0    0.661    1.446    17.3
     Aug.  2    16 38.88    + 7 18.8
           7    16 42.91    + 7 21.4    0.719    1.438    17.5


1990 June 29                   (5045)             Daniel W. E. Green

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