THE ASTRONOMER Electronic Circular No 254 1989 Jan 31 19.09UT. Telecom Gold 72:MAG60138 Ed:Guy M Hurst, 16, Westminster Close, Kempshott Rise, Basingstoke, Hants, RG22 4PP, England. Telephone:(0256)471074.Int:+44256471074 Telex:265871(MONREF G) Quote"72:MAG60138 ATT G.HURST"in FIRST line. ------------------------------------------------------------------- SN 1989B IN M66 Rob McNaught e-mails a precise position for the supernova based on an exposure on 1989 Jan 30.76UT with the Uppsala Southern Schmidt: RA 11h17m37.40s DEC +13 16'45.4"(1950) Offsets: 15.4"W; 50.3"N G.M.Hurst provides the following very approximate offsets for comparisons, the values of which have been revised since chart 860825 in accordance with 'Variable Stars' Vol 22 No3, 279, 1986: V Approx offsets in arcsecs 1 9.76 100W 100N A 13.45 250E 200N B 13.71 500E 60S a 14.09 200E 320S c 14.37 320W 70N b 14.53 570W 300S e 15.22 470W 130N d 15.23 30W 600N f - h 15.78 380W 230N g 16.05 460W 30S i - m 16.52 450W 170N COMET SHOEMAKER (1989f) The following precise positions have been reported: 1989 UT R.A. (1950) Decl. m1 Observer Jan. 28.51782 9 01 00.80 +51 37 27.3 16 Kojima 28.56296 9 00 59.62 +51 37 46.4 " 28.57986 9 00 58.86 +51 37 55.7 Niijima 28.60683 9 00 58.26 +51 38 06.4 " 28.61829 9 00 57.87 +51 38 11.0 " T. Kojima (YGCO Chiyoda Observatory). 0.25-m f/3.4 Wright-Schmidt camera. T. Niijima and K. Kanai (Ojima). 0.30-m f/5.8 reflector. Parabolic elements by S. Nakano from the seven available positions: T = 1988 Nov. 2.096 ET Peri. = 18.873 Node = 73.642 1950.0 q = 2.21068 AU Incl. = 25.523 1989 ET R.A. (1950) Decl. Delta r m1 Jan. 14 9 06.60 +49 13.5 1.476 2.364 16.1 24 9 03.05 +51 01.4 Feb. 3 8 58.43 +52 09.9 1.583 2.454 16.4 13 8 54.21 +52 37.7 23 8 51.70 +52 28.5 1.772 2.559 16.8 Mar. 5 8 51.63 +51 48.8 15 8 54.26 +50 45.4 2.029 2.677 17.3 IAUC 4725 Guy M Hurst