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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