THE ASTRONOMER Electronic Circular No 478 1991 Jan 15 20.10UT 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 GUYH@UK.AC.SUSSEX.CLUSTER TELECOM GOLD: 10074:MIK2885 PRESTEL 256471074 -------------------------------------------------------------------- ROSAT MISSION Extended periods are: (12) Jan 14-20 (13) Jan 21-31 Thereafter the initial survey is complete and further guidance is awaited from the professionals. Target List(format as per E457/E462/E467): Star RA (1950) DEC Range Type 12 13 TA Charts BAA RX And 01h01m46s +41 01.9 10.3-14.0 UGZ y 881221 AR And 01h42m04s +37 41.7 11.0-17.3p UGSS y y --- FN And 01h09m18s +34 59 13.5-17.5 UG y 900927 FO And 01h12m39s +37 22 13.5-17.5 UG y --- TT Ari 02h04m10s +15 03.4 10.2-14.5 UGZ y y 861227 OY Car 10h05m17s -69 59.4 12.2-17B UGSU y southern HT Cas 01h07m00s +59 48.1 12.6-19.3 UG y 850120 KU Cas 01h27m51s +57 38.3 13.3-18p UGSS y --- BV Cen 13h28m10s -54 43.1 10.7-13.6V UGSS y southern NN Cen 13h11m05s -60 36.5 13.2-17.5p UGSS y southern V803 Cen 13h20m50s -41 28.9 13.2-17.7V RCB y y southern Z Cha 08h08m38s -76 23.5 11.5-16.2V UGSU y southern EF Eri 03h12m00s -22 46.8 14.5-[17.3 E+XM y y southern KT Per 01h34m02s +50 42.1 11.5-15.3V UGZ y --- TY Psc 01h22m48s +32 07.5 12.2-16.3p UGSU y 901025 SUPERNOVA 1991A IN IC 2973 C. Pennypacker, S. Perlmutter, S. Block, S. Carlson, N. Hamilton, H. Marvin, R. Muller, and C. Smith communicate: "The Berkeley Automated Supernova Search reports the discovery of a supernova of mag 17 located 28" east and 10" south of the galaxy IC2973 (UGC 6872; R.A. = 11h51m15s.5, Decl. = +33 38'35", equinox 1950.0) in three separate images taken on Jan. 1 UT. Subsequent to discovery, the supernova was found to be present on images taken 1990 Dec. 13, 17, 22, 24, and 31. On Dec. 13 its magnitude was about 18. There was no supernova visible on an image taken Dec. 6 to a limit of mag 18." IAUC 5153 EG ANDROMEDAE This star is already on the BAAVSS Programme because of a PRO-AM exchange but in addition Stefan Korth informs us that Dr.Manfred Vogel of Switzerland will monitor the star with the IUE. Stefan asks that we report any estimates in the period 1990 Dec 1 - 1991 Feb 28. He asks for this purpose that we use the following comparisons: HD 3914 RA 00h39m18s DEC +40 24'56"(1950) V=7.00 HD 4322 RA 00h43m18s DEC +40 32'13"(1950) V=7.55 HD 3989 RA 00h40m03s DEC +45 39'22"(1950) V=7.03 The variable is located at: RA 00h41m52.7s DEC +40 24'22.6"(1950). Please submit results via the Editor who will relay estimates to Stefan. Guy M Hurst