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IAUC 2912: 1975n; 1975h

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IAUC number 

                                                  Circular No. 2912
Central Bureau for Astronomical Telegrams
INTERNATIONAL ASTRONOMICAL UNION
Postal Address: Central Bureau for Astronomical Telegrams
Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
Cable Address: SATELLITES, NEWYORK
Western Union: RAPID SATELLITE CAMBMASS


COMET WEST (1975n)
     Further total visual magnitude estimates: Jan. 7.47 UT, 7.5-8
(M. Owada, Australia, 6.5-cm refractor, 12 x; correction to IAUC
2905); 20.4, 7.5 (I. Cooper, Palmerston North, New Zealand, 10-cm
reflector?); 30.38, 5.8 (D. Goodman, Nelson, New Zealand, 10 x 50
binoculars); 31.39, 5.6 (Goodman).  V. M. Blanco, Cerro Tololo
Interamerican Observatory, reports that A. Gomez determined V = 5.84
on Feb. 9 UT (diaphragm 15"); the comparison star was epsilon PsA.

     The osculating elements mentioned on IAUC 2910 are as follows:

                      Epoch = 1976 Mar. 3.0 ET
       T = 1976 Feb  25.2182 ET     Peri. = 358.4202
       e =   0.999951               Node  = 118.2322   1950.0
       q =   0.196624 AU            Incl. =  43.0694


COMET KOBAYASHI-BERGER-MILON (1975h)
     Further precise positions have been reported as follows:

     1975 UT             R. A. (1950) Decl.        m2    Observer
     Oct. 11.67870    10 30 53.93   -12 23 23.0          Gilmore
          11.68438    10 30 54.03   -12 23 44.5            "
     Nov. 14.64536    10 35 08.46   -41 56 31.2          Austin
          28.53972    10 26 10.50   -51 57 00.2   15.3   Gilmore
          28.55359    10 26 09.75   -51 57 33.4            "
     Dec.  5.56366    10 16 52.44   -56 26 59.8   15.2     "
           5.58536    10 16 50.26   -56 27 48.2            "
           6.59425    10 15 09.37   -57 04 27.1            "

A. C. Gilmore (Carter Observatory) and R. R. D. Austin (Mount John
   University Observatory).  Measurer: P. M. Kilmartin.

     Extension to the ephemeris on IAUC 2856:

     1976 ET     R. A. (1950) Decl.     Delta     r      m2
     Mar.  3     5 39.48    -61 04.4    2.985   3.133   18.8
          13     5 38.07    -58 36.5
          23     5 40.58    -56 20.5    3.288   3.385   19.4
     Apr.  2     5 45.90    -54 19.1
          12     5 53.26    -52 33.8    3.596   3.628   19.9


1976 February 12               (2912)              Brian G. Marsden

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