THE ASTRONOMER Electronic Circular No 631 1992 Apr 25 16.28UT 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 ------------------------------------------------------------------- NSV 12872 Mike Collins, Everton, UK reports his discovery of a variable star on exposures of 1992 Apr 5.1UT for the UK Nova/Supernova Patrol. The position is: RA 20h 09.6m DEC +66 48' [1950], placing the object in area 5 (Draco). At discovery the mpv (135mm FL + Kodak 2415) was 11.2. With the assistance of the Royal Astronomical Society, a fax was obtained of a paper by Morgenroth which showed the object was identical to NSV 12872 discovered in 1934 with a catalogued photographic range of 14.5-[15.5. The star was not visible on: the master shot in Mike's collection of slides, TVMPSA or Atlas Stellarum. Subsequently Mike Collins has found earlier images and has derived the following light ephemeris: JDmax = 2447660 + 266E. The star is catalogued in the GSC as: GSC 4244.00152 with V=11.22. We do not at present have the type or spectral class. However a prime focus photograph of the star would be very useful. The following e-chart has been prepared by Mike Collins: \\\\\\NSV 12872 b discovered by Morgenroth S,120,20,S P,20h 09.6m +66 48' (1950) O,60,60,11.2,15.5 -S,TA920425 R,9.0,26,78,A,R M,9,30,2 R,9.8,13,13,B,R R,10.2,35,38,C R,10.6,77,42,D M,10,8,52,52,35,10,105,78,28 R,11.2,40,52,E,A R,11.4,91,60,F M,11,62,4,34,4,62,92,76,83,16,62,23,27,46,110 R,12.0,55,91,G R,12.3,35,60,H,A M,12,80,21,105,37,50,42,6,10,12,5,32,108,71,32 M,12,3,64,62,5,21,73,78,22,109,30,111,99 M,12,26,61,78,2,71,28,22,98,25,56,90,18,116,28 M,12,16,97,37,110,112,74,15,73,41,108,91,106,41,51 E,48 ////// Basic chart automatically generated by GSC2FIND ver 1.1 R SCUTI Professional astronomers at Keele have asked if we could report observations on a weekly basis of R Scuti as they wish to correlate these with their own studies in the ultraviolet. They have forthcoming shifts with the IUE satellite and the pattern of observations leading up to these runs would be valuable. Please e-mail your results weekly to the Editor. Guy M Hurst