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IAUC 4744: 1989 DA

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                                                  Circular No. 4744
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


1989 DA
     J. Mueller reports that J. Phinney discovered a fast-moving
asteroidal object on an exposure by P. Moniot and C. Brewer on Feb. 27
with the Oschin 1.2-m Schmidt telescope in the course of Palomar Sky
Survey II.  She has measured the following positions from that and a
follow-up exposure on Feb. 28:

     1989 UT             R.A. (1950) Decl.      Mag.
     Feb. 27.19444    8 26 44.36   +47 01 32.7   17
          27.25000    8 27 59.28   +46 49 31.2
          28.17708    8 48 47.91   +43 18 07.1
          28.18750    8 49 00.90   +43 15 47.1

     The following orbital elements, by B. G. Marsden, Center for
Astrophysics, are necessarily very uncertain, but the ephemeris may
help observers locate the object:

     T = 1989 Feb.  8.32 ET           Peri. = 144.56
     e = 0.6429                       Node  = 348.02    1950.0
     q = 1.0013 AU                    Incl. =   7.58
       a =  2.8036 AU      n = 0.20995      P =   4.69 years

     1989 ET      R.A. (1950) Decl.     Delta      r       V
     Feb. 27     8 22.01    +47 42.9    0.064    1.034    16.1
          28     8 44.92    +43 59.6
     Mar.  1     9 05.23    +39 58.9    0.063    1.041    15.9
           2     9 23.06    +35 48.8
           3     9 38.67    +31 36.9    0.065    1.048    15.8
           4     9 52.32    +27 30.0
           5    10 04.26    +23 33.2    0.069    1.057    15.7
           6    10 14.73    +19 50.2
           7    10 23.96    +16 22.9    0.076    1.066    15.7
           8    10 32.12    +13 12.2
           9    10 39.36    +10 18.1    0.083    1.075    15.8
          10    10 45.82    + 7 39.9
          11    10 51.61    + 5 16.8    0.092    1.085    16.0


1989 February 28               (4744)             Daniel W. E. Green

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