THE ASTRONOMER Electronic Circular No 378 1990 Jan 14 19.01UT Microlink:MAG60138 JANET:GMH at UK.AC.RO-GREENWICH.STARLINK Ed:Guy M Hurst, 16,Westminster Close, Kempshott Rise, Basingstoke, Hants, RG22 4PP, England. Telephone: (0256)471074 Int:+44256471074 Telex: 94082518 Answerback: TAGUY ------------------------------------------------------------------ SUPERNOVA 1989W IN ANONYMOUS GALAXY C. Pollas, Observatoire de la Cote d'Azur, reports his discovery on plates taken by A. Maury and himself of a possible SN 4"E and 8" north of the nucleus of an anonymous galaxy at R.A. =13h42m46.3, Decl. = +30d02'53" (equinox 1950.0). The object was at R =18 on 1989 Dec. 30.24 and 1990 Jan. 3.22 UT. IAUC 4940 COMET AARSETH-BREWINGTON (1989a1) Improved parabolic orbital elements from MPC 15672: T = 1989 Dec. 27.890 ET Peri. = 205.261 Node = 345.226 1950.0 q = 0.30071 AU Incl. = 88.380 1990 ET R.A. (1950) Decl. Delta r m1 Jan. 13 20 35.54 -44 24.6 1.239 0.558 5.9 15 20 53.69 -43 25.6 17 21 09.54 -42 18.6 1.347 0.646 6.8 19 21 23.41 -41 07.4 21 21 35.61 -39 54.7 1.458 0.734 7.5 23 21 46.40 -38 42.0 25 21 56.02 -37 30.4 1.569 0.821 8.1 27 22 04.66 -36 20.7 29 22 12.46 -35 13.1 1.678 0.905 8.7 31 22 19.55 -34 08.0 Feb. 2 22 26.05 -33 05.3 1.785 0.988 9.2 4 22 32.02 -32 05.2 6 22 37.56 -31 07.4 1.889 1.069 9.7 8 22 42.71 -30 12.0 IAUC 4940 COMET AUSTIN (1989c1) Improved parabolic orbital elements from MPC 15672: T = 1990 Apr. 9.847 ET Peri. = 61.504 Node = 75.409 1950.0 q = 0.34963 AU Incl. = 58.911 1990 ET R.A. (1950) Decl. Delta r m1 Jan. 19 0 32.50 -44 00.6 2.043 1.773 8.5 24 0 35.26 -41 22.6 29 0 38.69 -38 37.8 1.960 1.607 8.0 Feb. 3 0 42.71 -35 45.8 8 0 47.26 -32 45.8 1.869 1.434 7.4 13 0 52.28 -29 36.6 18 0 57.72 -26 17.1 1.769 1.253 6.7 23 1 03.54 -22 45.6 28 1 09.68 -19 00.2 1.661 1.064 5.9 Mar. 5 1 16.09 -14 58.3 10 1 22.67 -10 37.0 1.542 0.867 4.8 15 1 29.28 - 5 52.4 20 1 35.69 - 0 39.7 1.409 0.662 3.5 IAUC 4941 Guy M Hurst