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IAUC 5194: 1991 DB; 1990c

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                                                  Circular No. 5194
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 DB
     E. F. Helin and K. Lawrence report their discovery of a fast-
moving asteroidal object on films taken by Helin, Lawrence, and P.
Rose with the Palomar 0.46-m Schmidt telescope:

     1991 UT             R.A. (1950) Decl.       Mag.
     Feb. 18.38698   10 07 32.12   + 1 14 47.4   17.0
          18.41285   10 07 33.22   + 1 15 47.9
          19.43333   10 08 30.22   + 1 58 24.5
          20.35451   10 09 25.71   + 2 39 19.2
          20.38606   10 09 27.07   + 2 40 43.8

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

     T = 1991 Apr. 17.968 ET          Peri. =  50.684
     e = 0.46629                      Node  = 157.765   1950.0
     q = 1.03433 AU                   Incl. =  12.908
       a =  1.93800 AU     n = 0.365320     P =   2.70 years

     1991 ET      R.A. (1950) Decl.     Delta      r       V
     Feb. 13    10 03.24    - 1 47.6    0.276    1.254    17.0
          18    10 07.20    + 0 59.7
          23    10 12.34    + 4 50.8    0.210    1.198    15.9
          28    10 19.44    +10 01.8
     Mar.  5    10 29.56    +16 49.1    0.159    1.148    15.5
          10    10 44.35    +25 21.6
          15    11 06.43    +35 23.4    0.129    1.105    15.6
          20    11 39.95    +45 56.6
          25    12 30.57    +55 22.5    0.124    1.070    16.0


COMET LEVY (1990c)
     H. Fukushima, National Astronomical Observatory of Japan,
reports that an exposure on TP2415 film with a 300-mm telephoto lens
on Feb. 9.78 UT shows an anti-tail 2.7 deg long in p.a. 153 deg; the
main plasma tail was < 20' long.


1991 February 21               (5194)             Daniel W. E. Green

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