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IAUC 5044: 1990 MF

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                                                  Circular No. 5044
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 MF
     Further precise positions:

     1990 UT             R.A. (1950) Decl.       Mag.   Observer
     June 22.63575   16 25 39.73   - 2 49 43.2   15.5   McNaught
          22.64964   16 25 38.98   - 2 48 53.7            "
          28.21563   16 21 42.42   + 5 38 36.6          Helin
          28.32118   16 21 32.64   + 5 51 33.0            "
          28.40417   16 21 33.87   + 6 04 32.5   15     Gilmore
          28.46157   16 21 28.84   + 6 11 46.9            "
          28.47512   16 21 27.51   + 6 13 28.1            "
          28.48843   16 21 28.99   + 6 14 45.4          McNaught
          28.51763   16 21 26.20   + 6 18 29.1            "

R. H. McNaught and P. McGee (Siding Spring).  Uppsala Southern
 Schmidt.
E. Helin, B. Roman, K. Lawrence, and J. Michaud (Palomar).
A. C. Gilmore and P. M. Kilmartin (Mt. John University Observatory).

     Improved orbital elements from 12 observations June 22-28:

     T = 1990 Aug.  9.371 ET          Peri. = 112.828
     e = 0.44883                      Node  = 210.886   1950.0
     q = 0.95087 AU                   Incl. =   1.844
       a =  1.72519 AU     n = 0.434959     P =   2.27 years

     1990 ET      R.A. (1950) Decl.     Delta      r       V
     June 30    16 20.20    + 9 43.3    0.060    1.059    14.0
     July  2    16 18.28    +15 33.5
           4    16 15.85    +23 17.5    0.045    1.040    13.7
           6    16 12.40    +33 37.1

           8    16 06.58    +47 05.5    0.035    1.023    13.8
           9    16 01.68    +54 56.6
          10    15 53.79    +63 17.0    0.032    1.015    14.1
          11    15 38.9     +71 45.6
          12    15 01.3     +79 52.8    0.033    1.007    14.8
          13    11 59       +86 07.8
          14     6 31.1     +83 21.7    0.037    1.000    15.7
          15     5 27.8     +77 29.7
          16     5 07.5     +72 05.2    0.042    0.993    16.6


1990 June 29                   (5044)             Daniel W. E. Green

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