THE ASTRONOMER Electronic Circular No 695 1992 Dec 26 13.01UT 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 TELECOM GOLD: 10074:MIK2885 GMH at UK.AC.RUTHERFORD.STARLINK.ASTROPHYSICS STARLINK: RLSAC::GMH GMH at UK.AC.CAM.ASTRONOMY.STARLINK STARLINK: CAVAD::GMH ------------------------------------------------------------------- SUPERNOVA 1992bn IN ANONYMOUS GALAXY Christian Pollas, Observatoire de la Cote d'Azur, reports his discovery of an apparent supernova (mag about 19) on technical pan films taken with the 0.9-m Schmidt telescope on Dec. 13.83 and 14.84 UT (limiting mag 21-22). SN 1992bn is located at R.A. = 1h26m20s.50, Decl. = +8 53'24".8 (equinox 1950.0), or 1".2 east and 6".8 north of a galaxy of mag about 16.5 having end figures 20s.58, 31".6. Nothing is visible either on a similar film taken in 1989 or on the Palomar Sky Survey prints. A nearby star of mpg about 16 has end figures 26s.26, 48".0. IAUC 5678 COMET OHSHITA (1992a1) Updated elements (cf E690): T 1992 Nov 1.5620 TT w 309.97900 ) e 0.99054000 O 138.35200 ) 2000.0 q 0.6635700 A.U. i 115.11400 ) Source: IAUC 5679 Positions are geocentric Ephemeris by Hurst using EPH.EXE by N.James: m = 12.0 + 5.0 log R + 10.0 log r Date R.A. (2000) Dec. R r Elong Mag. Motion h m o ' (AU) (AU) o "/hr P.A. 1992 Dec 26.00 14 25.97 +45 56.1 0.822 1.251 87.2 12.5 320 23 28.00 14 36.02 +49 49.5 0.830 1.280 89.4 12.7 315 24 30.00 14 47.28 +53 35.5 0.842 1.310 91.4 12.8 307 26 1993 Jan 1.00 14 59.97 +57 11.6 0.858 1.340 93.1 12.9 297 27 3.00 15 14.39 +60 35.4 0.878 1.369 94.6 13.1 284 30 5.00 15 30.89 +63 45.0 0.901 1.399 95.8 13.2 271 33 7.00 15 49.87 +66 38.5 0.927 1.428 96.8 13.4 256 36 9.00 16 11.78 +69 14.3 0.956 1.458 97.5 13.5 241 40 11.00 16 37.08 +71 30.8 0.988 1.487 97.9 13.7 226 45 13.00 17 6.08 +73 26.7 1.023 1.517 98.2 13.9 211 51 15.00 17 38.84 +75 0.6 1.060 1.546 98.3 14.0 197 58 17.00 18 14.91 +76 11.6 1.098 1.576 98.2 14.2 183 66 19.00 18 53.17 +76 59.9 1.139 1.605 97.9 14.3 170 74 21.00 19 32.00 +77 26.7 1.181 1.634 97.6 14.5 159 82 23.00 20 9.60 +77 34.4 1.225 1.663 97.1 14.6 147 90 25.00 20 44.52 +77 26.7 1.270 1.692 96.5 14.8 137 97 27.00 21 15.93 +77 7.3 1.316 1.721 95.8 15.0 127 104 29.00 21 43.60 +76 39.6 1.363 1.750 95.0 15.1 118 109 31.00 22 7.71 +76 6.7 1.410 1.778 94.2 15.2 110 113 IAUC 5679 NOVA IN MESSIER 31 The positions in E693 for RA were inadvertently rounded off in RA and should read: 00h40m16.34s (SAOC) 00h40m16.28s (PPM) Brian Manning reports that star residuals were 1.5"(SAOC);0.5"(PPM) PERIODIC COMET SCHAUMASSE (1992x) Herman Mikuz, Slovenia reports a recent observation with the 0.20-m f/2 Baker-Schmidt camera + V filter and ST-6: 1992 12 20.79 V=14.2 (AAVSO Sequence) Coma diameter 1.5', DC5. Comet diffuse with condensation. This report suggests the comet is much fainter than predicted (see E691 for further details), Guy M Hurst