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IAUC 4966: 1990 DA; V1118 Ori

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                                              Circular No. 4966
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


1990 DA
     A. Sugie reports his discovery of an asteroidal object with
direct motion.  The following observations are available:

     1990 UT             R.A. (1950) Decl.       Mag.   Observer
     Feb. 16.55799    8 26 00.25   +16 27 55.9    13    Sugie
          16.57361    8 26 00.98   +16 28 58.1            "
          17.43021    8 26 50.97   +17 25 19.2    13      "
          17.44549    8 26 51.86   +17 26 18.0            "
          17.53854    8 26 56.54   +17 32 21.7            "
          17.56146    8 26 57.66   +17 33 50.0            "
          19.43420    8 28 49.06   +19 30 40.9    14    McNaught
          19.44005    8 28 49.39   +19 31 01.0            "
          19.44392    8 28 49.60   +19 31 15.3            "

A. Sugie (Dynic Astronomical Observatory).  0.25-m f/3.4 Schmidt.
R. H. McNaught (Siding Spring).  Uppsala Schmidt.  V magnitude.

     Preliminary orbital elements by B. G. Marsden, Center for
Astrophysics, from 9 observations, Feb. 16-19:

     T = 1989 Dec. 16.426 ET          Peri. = 305.375
     e = 0.46025                      Node  = 142.540   1950.0
     q = 1.17626 AU                   Incl. =  25.545
       a =  2.17928 AU     n = 0.306362     P =   3.22 years

     1990 ET      R.A. (1950) Decl.     Delta      r       V
     Feb. 18     8 27.39    +18 01.9    0.387    1.351    13.9
          23     8 32.53    +22 49.0
          28     8 38.23    +26 39.4    0.468    1.402    14.6
     Mar.  5     8 44.48    +29 39.7
          10     8 51.22    +31 57.7    0.568    1.456    15.2


V1118 ORIONIS
     Visual magnitude estimates (cf. IAUC 4676):  1989 Jan. 24.81
UT, 14.2 (M. Verdenet, Bourbon-Lancy, France); Feb. 26.10, 13.2 (J.
E. Bortle, Stormville, NY); Nov. 28.92, 14.0 (Verdenet); 1990 Feb.
17.92, 15.3 (R. Chanal, Sainte-Etienne, France, photovisual).


1990 February 19               (4966)             Daniel W. E. Green

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