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IAUC 2836: 1975h

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                                                  Circular No. 2836
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 KOBAYASHI-BERGER-MILON (1975h)
     The following precise positions have been reported:

     1975 UT             R. A. (1950) Decl.        Observer
     Aug.  3.50017    13 16 08.85   +53 40 41.6    Kojima
           4.48420    13 04 54.91   +52 42 21.7      "
          22.83996    11 26 40.06   +39 04 49.2    Debehogne
          22.84897    11 26 38.22   +39 04 27.2      "
          23.83238    11 23 22.41   +38 24 52.3      "
          23.84623    11 23 19.67   +38 24 19.1      "
          25.83390    11 16 53.88   +37 01 18.8      "
          25.84545    11 16 51.66   +37 00 49.3      "
          26.82275    11 13 46.60   +36 18 10.4      "
          26.83037    11 13 45.14   +36 17 49.9      "
          27.82140    11 10 40.60   +35 33 07.3      "
          27.82902    11 10 39.05   +35 32 45.5      "
          28.81903    11 07 38.15   +34 46 26.5      "
          28.82941    11 07 36.17   +34 45 56.0      "
          29.82010    11 04 38.62   +33 57 44.5      "
          29.82876    11 04 37.20   +33 57 19.7      "

N. Kojima (Ishiki, Aichi).  From Orient. Astron. Assoc. Comet Bull.
   No. 110.
H. Debehogne (Royal Observatory, Uccle).  40-cm f/5 astrograph.

     E. P. Ney and B. Hatfield, University of Minnesota, report the
following infrared magnitudes, obtained on Sept. 3.9 UT with a diaphragm
of 27": I, 5.7; 1.2 um, 5.6; 1.6 um, 5.7; 2.2 um, 5.0; 3.5 um,
1.5; 4.8 um, -0.4; 8.5 um, -2.4; 10.6 um, -3.0; 12.5 um, -3.4.

     P. Maley, Houston, Texas, reports that a photograph taken by R.
Reeves on Aug. 12 shows a straight tail about 14o long.  S. Cantu
and L. Mantegazza, Milan Observatory, report that a photograph by L.
Pansecchi on Aug. 12.8 (6-cm f/8 Maksutov camera) shows the tail in
p.a. 65o and a jet, probably plasma, in p.a. 88o.

     Further selected total visual magnitude estimates, coma diameters
and tail information: Aug. 30.06, 4.7, -, 3o (D. Green, Boone,
North Carolina, 12 x 50 binoculars); Sept. 1.13, 4.3, 3', 1o.7 (R. A.
Keen, Boulder, Colorado, 6 x 30 binoculars); 2.15, -, -, 10o in
p.a. 50o (M. J. Mayo, Agoura, California, 7 x 35 binoculars); 4.02,
4.8, ~ 1', - (J. Bortle, Brooks Observatory, 10 x 50 binoculars).


1975 September 12              (2836)              Brian G. Marsden

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