Circular No. 2754 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 KOHOUTEK-IKEMURA (1975b) Dr. K. Osawa, Director of the Tokyo Astronomical Observatory, cables that Ikemura has discovered a comet, as shown below. The comet is clearly identical with the one observed by L. Kohoutek on Feb. 27 (IAUC 2752), but the motion is reversed, and the Feb. 9 observation must therefore refer to a different object. Further observations of comet Kohoutek-Ikemura were subsequently identified by N. Kojima (Ishiki) and by R. E. McCrosky on a plate taken by G. Schwartz with the 41-cm astrograph at Harvard Observatory's Agassiz Station. All these observers described the comet as diffuse, without condensation. 1975 UT R. A. (1950) Decl. m1 Observer Feb. 28.42674 2 48.1 +16 11 12 Kojima Mar. 1.024 2 50 +16.5 Schwartz & McCrosky 1.52129 2 50.8 +16 46 12 Ikemura 2.45035 2 53.3 +17 17 12 " The following orbital elements and ephemeris, based on approximate observations only, are by K. Hurukawa and T. Hirayama: T = 1975 Mar. 23.45 ET Peri. = 33.2 Node = 106.3 1950.0 q = 0.940 AU Incl. = 13.0 1975 ET R. A. (1950) Decl. Delta r m1 Feb. 27 2 44.6 +15 26 0.902 1.033 11.9 Mar. 4 2 57.5 +18 09 9 3 12.2 +21 03 0.828 0.974 11.5 14 3 28.8 +24 08 19 3 47.7 +27 22 0.752 0.943 11.1 COMET KOHOUTEK Dr. L. Kohoutek, Hamburg Observatory, informs us that the sense of motion of the Feb. 9 cometary object is unclear but that he has possibly reobserved this object as follows: 1975 UT R. A. (1950) Decl. m1 Feb. 27.79965 4 34.2 +20 13 15 1975 March 3 (2754) Brian G. Marsden
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