THE ASTRONOMER Electronic Circular No 666 1992 Sept 6 17.09UT Ed:Guy M Hurst, 16,Westminster Close, Kempshott Rise, Basingstoke, Hants, RG22 4PP,England. Telephone/FAX(0256)471074 Int:+44256471074 Telex: 9312111261 Answerback: TA G JANET BOXES: GMH at UK.AC.CAM.ASTRONOMY.STARLINK or GUYH at UK.AC.SUSSEX.CLUSTER TELECOM GOLD: 10074:MIK2885 PRESTEL 256471074 ------------------------------------------------------------------- SUPERNOVA 1992av IN ANONYMOUS GALAXY C. Pollas, Observatoire de la Cote d'Azur, reports his discovery, on OCA Schmidt technical pan films taken Aug. 21.96 and 22.97UT (limiting mag 21), of an apparent supernova (V about 20) located at R.A. = 17h43m14s.55, Decl. = +67 50'20".6 (equinox 1950.0). SN 1992av is 10".9 east and 4".6 north of the center of a galaxy of mpg about 18, and it is near the east tip of the galaxy's thin disk, the disk being only visible on deeper films (limiting mag 22) obtained one year ago. Nothing is visible at this location on the POSS prints. A nearby star (V = 16.5) has end figures 16s.19, 51'13".7. M. Turatto and S. Benetti report that SN 1992av was at magnitudes B = 18.9, V = 18.6, and R = 18.7 when observed on Aug. 24.0 with the Asiago Observatory 1.8-m telescope (+ CCD). IAUC 5595 COMET HELIN-LAWRENCE (1992q) Eleanor F. Helin and Kenneth J. Lawrence have discovered a comet on films taken with the 0.46-m Schmidt telescope at Palomar. J. Alu and P. Rose assisted, and the latter measured the positions below. The object is slightly diffuse, with a strong condensation but no perceptible tail: 1992 UT R.A. (2000) Decl. m1 Aug. 29.43102 2 03 53.36 -12 23 45.1 15 29.44826 2 03 52.60 -12 24 12.8 30.36181 2 03 23.45 -12 51 50.1 15 30.46319 2 03 19.71 -12 54 55.0 IAUC 5597 Elements by Brian Marsden: T 1993 Mar 13.4160 TT w 270.79500 ) e 1.00000000 O 194.82900 ) 2000.0 q 1.9695100 A.U. i 107.40500 ) Source: IAUC5600 Positions are geocentric m = 8.5 + 5.0 log R + 10.0 log r Ephemeris by G.Hurst using EPH.EXE by N.James: Date R.A. (2000) Dec. R r Elong Mag. Motion h m o ' (AU) (AU) o "/hr P.A. 1992 Sept 5.00 1 59.71 -15 51.1 2.177 2.970 134.3 14.9 87 198 10.00 1 55.45 -18 42.4 2.099 2.930 138.4 14.8 94 201 15.00 1 50.19 -21 43.5 2.032 2.889 141.7 14.6 101 203 20.00 1 43.85 -24 52.0 1.977 2.849 143.7 14.5 106 206 25.00 1 36.39 -28 4.5 1.934 2.809 144.1 14.4 110 209 30.00 1 27.79 -31 16.8 1.904 2.769 142.9 14.3 112 212 1992 Oct 5.00 1 18.10 -34 24.4 1.888 2.730 140.0 14.2 112 214 10.00 1 7.40 -37 22.8 1.883 2.692 135.9 14.2 109 218 15.00 0 55.86 -40 8.1 1.891 2.654 130.9 14.1 104 221 20.00 0 43.69 -42 37.2 1.910 2.616 125.4 14.1 98 224 TA AGM 1992 The meeting in Northampton yesterday was attended by approximately 60 observers and I would like to express my appreciation to Denis Buczynski and Bob Marriott for looking after all the arrangements this year. Guy M Hurst