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IAUC 5242: 1991 GO; 1990c

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IAUC number 

                                                  Circular No. 5242
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


1991 GO
     S. Nakano, Sumoto, Japan, reports that K. Endate and K.
Watanabe have discovered a fast-moving asteroidal object.  Images
have also been found by E. Helin on exposures at Palomar.

     1991 UT             R.A. (1950) Decl.       Mag.   Observer
     Apr. 11.61111   13 46 43.05   - 2 15 12.8   15.5   Endate
          11.62153   13 46 37.40   - 2 16 50.2            "
          11.62778   13 46 34.15   - 2 17 42.9            "
          12.43438   13 40 09.78   - 4 08 16.9   15     Helin
          12.45781   13 39 59.14   - 4 11 10.6            "
          13.37847   13 34 07.93   - 5 53 20.6            "

K. Endate (Kitami, Japan).  0.20-m f/4 reflector.  Measurer
  K. Watanabe.
E. Helin, K. Lawrence, and P. Rose (Palomar).  0.46-m Schmidt
  telescope.  Measurer Rose.

     Preliminary orbital elements by G. Williams, Center for
Astrophysics:

     T = 1991 Feb. 16.646 ET          Peri. =  88.529
     e = 0.65558                      Node  =  24.356   1950.0
     q = 0.66452 AU                   Incl. =   9.587
       a =  1.92937 AU     n = 0.367775     P =   2.68 years

     1991 ET      R.A. (1950) Decl.     Delta      r       V
     Apr. 14    13 30.79    - 6 50.3    0.099    1.102    14.9
          19    13 14.07    -11 34.0
          24    13 06.36    -13 47.2    0.208    1.209    17.2
          29    13 02.57    -15 02.5
     May   4    13 00.98    -15 50.1    0.327    1.314    18.6


COMET LEVY (1990c)
     Total visual magnitude estimates (cf. IAUC 5226): Apr. 2.17 UT,
9.8 (A. Hale, Las Cruces, NM, 0.41-m reflector); 6.20, 10.2 (C. S.
Morris, Pine Mountain Club, CA, 0.26-m reflector); 12.08, 9.9 (J. E.
Bortle, Stormville, NY, 0.32-m reflector); 14.24, 10.4 (Hale).


1991 April 17                  (5242)             Daniel W. E. Green

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