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IAUC 4662: 1988 TA

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                                                  Circular No. 4662
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


1988 TA
     J. Mueller and J. Phinney report their discovery, with the 1.2-m
Oschin Schmidt telescope in the course of the second Palomar Sky Survey,
of a fast-moving asteroidal object.  The following observations are
available:

     1988 UT             R.A. (1950) Decl.     Mag.   Observer
     Oct.  5.30556    1 37 12.30   +12 30 54.2  16     Mueller
           5.33681    1 37 03.85   +12 27 39.9           "
           6.30694    1 34 11.10   +11 00 26.4           "
           6.32778    1 34 06.76   +10 58 49.6           "
           9.29809    1 28 32.40   + 8 13 04.7         Shoemaker
          10.32720    1 27 10.10   + 7 35 31.7         Shao
          10.32726    1 27 13.94   + 7 35 43.6         Shoemaker

J. Mueller (Palomar).
C. S. and E. M. Shoemaker (Palomar).  0.46-m Schmidt telescope.
  Images slightly out of focus.  Measured by J. Gibson.
C.-Y. Shao (Oak Ridge).  1.55-m reflector.

     Orbital elements from the above observations by B. G. Marsden,
Center for Astrophysics, show this to be an Apollo-type object:

     T = 1988 Aug. 13.70 ET           Peri. = 104.31
     e = 0.5029                       Node  = 194.67    1950.0
     q = 0.7964 AU                    Incl. =   2.66
       a =  1.6022 AU      n = 0.48599      P =   2.03 years

     1988 ET      R.A. (1950) Decl.     Delta      r      Mag.
     Oct.  6     1 34.98    +11 26.6    0.054    1.052    16.4
           8     1 30.52    + 9 13.2
          10     1 27.61    + 7 47.6    0.085    1.083    17.2
          12     1 25.55    + 6 48.4
          14     1 24.01    + 6 05.5    0.117    1.114    17.8
          16     1 22.83    + 5 33.2
          18     1 21.92    + 5 08.6    0.150    1.145    18.5
          20     1 21.21    + 4 49.6
          22     1 20.69    + 4 35.0    0.184    1.177    19.1
          24     1 20.32    + 4 23.8
          26     1 20.08    + 4 15.3    0.219    1.209    19.7


1988 October 12                (4662)             Daniel W. E. Green

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