THE ASTRONOMER Electronic Circular No 423 1990 June 17 17.40UT Ed:Guy M Hurst, 16,Westminster Close, Kempshott Rise, Basingstoke, Hants, RG22 4PP, England. Telephone: (0256)471074 Int:+44256471074 Telex: 94082518 Answerback: TAGUY Microlink: MAG60138 JANET:GMH @ UK.AC.CAM.ASTRONOMY.STARLINK or GUYH@UK.AC.SUSSEX.CLUSTER --------------------------------------------------------------------- SUPERNOVA 1990M IN NGC 5493 R. Evans, Hazelbrook, N.S.W., reports his discovery on June 15.45 UT of an apparent supernova in NGC 5493 (R.A. 14h08.9m, Decl. = -4 49', equinox 1950.0), located 15" west and 4" north of the galaxy's centre. T. Cragg, Siding Spring Observatory, confirmed the object visually at mag 13.5. IAUC 5033 PERIODIC COMET WOLF-HARRINGTON (1990e) J. V. Scotti reports his recovery of this comet with the 0.91-m Spacewatch telescope at Kitt Peak, as given below. The June 14.413 image shows a 10" tail in p.a. about 250 deg. The indicated correction to the prediction on MPC 13057 is Delta(T) = +0.01 day. 1990 UT R.A. (1950) Decl. m1 June 14.38469 23 04 18.46 +14 56 06.5 14.40553 23 04 19.23 +14 56 19.7 14.41287 23 04 19.45 +14 56 24.6 14.42689 23 04 20.05 +14 56 33.8 19.3 15.44332 23 04 59.59 +15 07 49.2 15.45372 23 04 59.96 +15 07 55.0 IAUC 5033 UK NOVA/SUPERNOVA PATROL Preliminary 1989 patrol statistics released today: Nova Patrol 1989 1989 1988 Visual Patrol Time 89h 22m (136h 01m) No. visual patrols 663 (899) No. photo. patrols 1562 (1334) No. reports 73 (89) Av. time per patrol 6 min ( 9 min) No. visual patrols 3005 (1254) No. photo. patrols 232 ( 190) Obs. of SNs 276 ( 32) Total Observations 3513 (1476) No.reports 308 ( 77) Recurrent Objects Patrol 1989 No. visual observations 477 No. photo. observations 208 Total Observations 685 No. reports 56 Guy M Hurst