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IAUC 4916: 1989a1

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                                               Circular No. 4916
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


COMET AARSETH-BREWINGTON (1989a1)
     Improved parabolic orbital elements from MPC 15520:

     T = 1989 Dec. 27.886 ET          Peri. = 205.272
                                      Node  = 345.208   1950.0
     q = 0.30060 AU                   Incl. =  88.378

     1989 ET      R.A. (1950) Decl.     Delta      r       m1
     Nov. 30    16 19.97    +18 10.5    1.278    0.816     7.7
     Dec.  1    16 20.20    +17 15.2
           2    16 20.43    +16 18.3    1.250    0.773     7.4
           3    16 20.67    +15 19.5
           4    16 20.91    +14 18.6    1.221    0.730     7.1
           5    16 21.17    +13 15.4
           6    16 21.43    +12 09.9    1.191    0.686     6.7
           7    16 21.72    +11 01.7
           8    16 22.02    + 9 50.5    1.161    0.642     6.4
           9    16 22.36    + 8 36.2
          10    16 22.73    + 7 18.4    1.130    0.597     6.0
          11    16 23.14    + 5 56.9
          12    16 23.61    + 4 31.1    1.099    0.553     5.6
          13    16 24.15    + 3 00.9
          14    16 24.79    + 1 25.7    1.069    0.509     5.2
          15    16 25.53    - 0 14.8
          16    16 26.42    - 2 01.1    1.038    0.466     4.8
          17    16 27.48    - 3 53.6
          18    16 28.77    - 5 52.7    1.010    0.424     4.3
          19    16 30.33    - 7 58.8
          20    16 32.24    -10 12.2    0.983    0.386     3.8

     Further total visual magnitude estimates:  Nov. 29.22 UT, 7.8
(P. Schmeer, Bischmisheim, W. Germany, 20x80 binoculars); 29.74,
7.4 (J.-C. Merlin, Le Creusot, France, 7x50 binoculars); 29.97, 7.4
(G. R. Chester, Rixeyville, VA, 0.37-m reflector; tail about 30'
long in p.a. 0 deg); 30.26, 7.3 (A. Pereira, Cabo da Roca, Portugal,
9x34 binoculars).


1989 November 30               (4916)             Daniel W. E. Green

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