THE ASTRONOMER Electronic Circular No 533 1991 June 20 19.16UT Ed:Guy M Hurst, 16,Westminster Close, Kempshott Rise, Basingstoke, Hants, RG22 4PP, England. Telephone: (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 ------------------------------------------------------------------- COMET HELIN-ALU (1991r) E. Helin reports selected positions (cf.E531): 1991 UT R.A. (1950) Decl. m1 June 13.34722 16 35 53.76 -22 25 43.3 16 16.36701 16 34 20.73 -22 03 12.5 18.29896 16 33 22.63 -21 48 55.3 Very preliminary parabolic orbital elements: T = 1991 Mar. 2.118 ET Peri. = 348.796 Node = 252.742 1950.0 q = 5.58729 AU Incl. = 57.060 1991 ET R.A. (1950) Decl. Delta r m1 June 18 16 33.53 -21 51.1 23 16 31.13 -21 14.4 4.687 5.647 15.9 28 16 28.91 -20 38.4 July 3 16 26.91 -20 03.4 4.769 5.658 15.9 8 16 25.14 -19 29.6 13 16 23.64 -18 57.0 4.877 5.670 16.0 IAUC 5295 COMET LEVY (1991q) Herman Mikuz, Yugoslavia, e-mails that he has seen this new comet visually on 1991 June 20.05UT at m1=8.7 using 15x80B. The coma diameter was estimated as 4', DC 3. TAV 0559+06 (=Q1991/9) Mike Collins, Sandy, reports his discovery of a new variable in Orion on UK Nova/Supernova Patrol photographs of 1991 Jan 13. The star is located at: RA 05h59.1m DEC +06 38'(1950) and has a range of 10.5-11.6 based on an analysis of photos 1989 Nov 23 to date (Kodak 2415 film). An e-chart follows: \\\\\\ Q1991/9 0559+06 variable in Ori discovered by Mike Collins S,120,20,S P,05h 59.1m +06 38' (1950) O,60,60,10.5,11.6 R,8.9,36,62,A R,9.7,60,74,B,A R,10.0,81,65,C R,10.4,28,26,D,R R,10.6,64,107,E,B R,10.8,51,72,F,A M,10,29,71,4,9,27,21,96,5 R,11.2,24,39,G R,11.5,58,63,H,A M,11,114,88,60,91,6,118,102,12,23,25 M,11,116,25,48,61,85,95,28,78 M,11,114,69,107,115,38,94,41,118 R,12.3,65,69,I,R M,12,72,93,2,88,41,69,91,63,88,48,40,111,55,104 M,12,91,1,63,110,47,66,34,11,33,48,81,84 M,12,31,13,75,3,54,100,49,26,115,63,73,89,65,63 M,12,17,83,48,19,99,27,47,12,32,109,118,7,57,3 M,12,74,32,101,60,77,15,43,108,97,39,113,89,42,95 M,12,1,62,68,110,104,34,77,94,16,49,6,102,102,78 E,68 ////// Chart automatically generated by GSC2FIND ver 1.0 Guy M Hurst