Circular No. 3189 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 Telex: 921428 Telephone: (617) 864-5758 1978 CA Accurate and semiaccurate positions are reported as follows: 1978 UT R. A. (1950) Decl. Observer Feb. 17.25794 10 23 55.29 -20 09 15.6 Schuster 18.28083 10 23 02.43 -18 49 49.7 " Mar. 1.03091 10 10 03.45 + 3 43 32.7 " 8.31229 9 56 24.3 +28 25 30 Bowell H.-E. Schuster (European Southern Obs.). Measurer: R. M. West. E. Bowell (Lowell Observatory). On Mar. 8.307 UT, V = 14.54, B-V = +0.80, U-B = +0.53. 1978 DA Accurate and semiaccurate positions are reported as follows: 1978 UT R. A. (1950) Decl. Observer Mar. 1.09636 11 31 43.73 -15 14 09.9 Schuster 2.14245 11 39 34.80 -14 20 36.8 " 8.32916 12 41 27.1 - 6 07 02 Bowell H.-E. Schuster (European Southern Obs.). Measurer: R. M. West. E. Bowell (Lowell Observatory). On Mar. 8.324 UT, V = 13.85, B-V = +0.74, U-B = +0.47. COMET BRADFIELD (1978c) The following semiaccurate position was obtained by H.-E. Schuster with the 100-cm Schmidt telescope at E.S.O.: 1978 UT R. A. (1950) Decl. Mar. 8.40660 21 34 49.7 -11 42 33 The 3-min blue exposure shows a 6' tail to the southwest. E. P. Ney and D. A. Brodzik, University of Minnesota, report infrared observations obtained at the O'Brien Observatory on Mar. 4.7 UT with a diaphragm 27" in diameter: 3.6 um, 4.5; 4.8 um, 2.6; 8.5 um, -0.6; 10.6 um, -1.3; 12.5 um, -1.6. 1978 March 9 (3189) Brian G. Marsden
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