Circular No. 3264 Central Bureau for Astronomical Telegrams INTERNATIONAL ASTRONOMICAL UNION Postal Address: Central Bureau for Astronomical Telegrams Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A. TWX 710-320-6842 ASTROGRAM CAM Telephone 617-864-5758 1978 RA Eleanor Helin, California Institute of Technology, reports the discovery of a fast-moving asteroidal object. Available positions: 1978 UT R. A. (1950) Decl. Mag. Observer Sept.10.39653 23 16.8 + 0 52 11-12 Helin 11.17674 23 13.0 - 0 21 " 11.31388 23 l2 20.06 - 0 36 " 11.31667 23 12 - 0 33 29.5 Giclas 11.39653 23 11.9 - 0 40 Helin 11.48403 23 11.5 - 0 50 " 12.26191 23 01 43 - 2 02.8 Bowell 12.32361 23 01 25 - 2 08.6 " 12.39366 23 01 03 - 2 15.1 " E. Helin, R. Weeks, J. Faulkner and S. J. Bus (Palomar Mountain Observatory). 46-cm Schmidt telescope. H. L. Giclas (Lowell Observatory). 33-cm photographic telescope. Near edge of plate; somewhat uncertain. Measurer: M. L. Kantz. E. Bowell (Lowell Observatory). 183-cm reflector. Observations during Sept. 12.23-12.43 UT yield mean V = 13.23, B-V = +0.71, U-B = +0.31. Observed range in V was ~ 0.1 magnitude. There were no significant variations in color. COMET GICLAS (1978k) Henry L. Giclas, Lowell Observatory, reports that he has discovered a comet as follows: 1978 UT R. A. (1950) Decl. m1 Sept. 8.30208 0 08 14.0 - 8 59 48 15.6 Daily motion: dR.A. = -0m.16, dDecl. = -12'. Object diffuse with condensation, possible elongation westward. Measurer: M. L. Kantz. NOVA CYGNI 1978 Visual magnitude estimates: Sept. 10.03, 6.8 (Warren Morrison, Peterborough, Ontario; independent discovery; telegram delayed in transit); 12.16, 6.2 (K. Beckman, Washington, Montana; independent discovery); 12.79, 6.4 (S. Baroni and N. Cavagna, Milan, Italy). 1978 September 13 (3264) Brian G. Marsden
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