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IAUC 4767: 1989 FC

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                                                  Circular No. 4767
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 FC
     H. E. Holt and N. G. Thomas report their discovery of another
fast-moving asteroidal object on 0.46-m Schmidt telescope films.
E. Bowell, Lowell Observatory, communicates the following measurements
by S. J. Bus and H. E. Holt.

     1989 UT             R.A. (1950) Decl.       Mag.
     Mar. 31.28021   12 13 06.41   +16 40 50.3   16.5
          31.31979   12 12 58.29   +16 40 20.2
     Apr.  2.39878   12 08 57.77   +16 17 30.9
           3.28125   12 07 50.67   +16 09 25.8
           4.24306   12 06 46.54   +16 01 04.0

     The following preliminary orbital elements are by B. G. Marsden,
Center for Astrophysics.  It appears that the object may have
made a near-record close approach to the earth on Mar. 23.0 ET.

     T = 1989 Jan. 13.58 ET           Peri. = 254.88
     e = 0.3623                       Node  = 179.93    1950.0
     q = 0.6534 AU                    Incl. =   5.00
       a =  1.0248 AU      n = 0.95010      P =   1.04 years

     1989 ET      R.A. (1950) Decl.     Delta      r       V
     Mar. 19    23 11.54    -11 45.2    0.025    0.971    26.1
          21    22 32.32    - 8 00.2    0.013    0.984    21.6
          23    17 52.10    +18 42.5    0.005    0.997    12.2
          25    13 13.49    +20 28.7    0.014    1.010    12.7
          27    12 34.44    +18 15.4    0.026    1.022    14.0
          29    12 20.71    +17 18.3    0.038    1.034    14.8
          31    12 13.78    +16 45.3    0.051    1.046    15.5
     Apr.  2    12 09.66    +16 22.2    0.063    1.058    16.0
           4    12 07.00    +16 03.7    0.076    1.070    16.5
           6    12 05.21    +15 47.4    0.089    1.082    16.9
           8    12 04.02    +15 32.1    0.102    1.093    17.2
          10    12 03.25    +15 17.1    0.115    1.104    17.6
          12    12 02.82    +15 02.1    0.129    1.115    17.8
          14    12 02.66    +14 46.8    0.142    1.126    18.1


1989 April 7                   (4767)             Daniel W. E. Green

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