------------------------------------------------------------------- THE ASTRONOMER Electronic Circular No 1442 1999 Sep 21 16.36UT Ed:Guy M Hurst, 16,Westminster Close, Kempshott Rise, Basingstoke, Hants, RG22 4PP,England.Telephone/FAX(01256)471074Int:+441256471074 INTERNET: GUY@TAHQ.DEMON.CO.UK GMH at AST.STAR.RL.AC.UK WORLD WIDE WEB http://www.demon.co.uk/astronomer ------------------------------------------------------------------- DO DRACONIS (=Q1999/276) Eddy Muyllaert, Belgium, reports an outburst of this UG star which is on the recurrent objects programme of the BAAVSS. On 1999 Sept 20.830UT he estimated it at magnitude 11.2 visual using the AAVSO sequence. Patrick Schmeer, Germany confirmed the brightening on Sept 21.142UT at 10.7 using the Henden/Honeycutt sequence. Patrick addes that the previous recorded outburst was detected by Gary Poyner on 1996 Oct 16. COMET C/1999 R1 (SOHO) D. A. Biesecker, SM&A Corporation and Goddard Space Flight Center, reports observations of what is presumably a comet, not a Kreutz sungrazer, discovered by T. Lovejoy in SOHO/LASCO C3 data and later also recognized in earlier C2 data. Astrometry and orbital computations are given on MPEC 1999-R19. Biesecker also provides the following LASCO magnitudes, reduced using the Hipparcos Input Catalogue: Sept. 5.47 UT, 6.6; 5.53, 6.5; 5.57, 6.4; 5.61, 6.3; 5.65, 6.2; 5.70, 6.2; 5.78, 6.4; 5.82, 6.4; 5.86, 6.7; 5.90, 6.9; 5.99, 6.9; 6.07, 7.4; 6.15, 7.4. No tail was detected. 1999 UT R.A. (2000) Decl. Sept. 4.896 10 48.8 + 7 17 IAUC 7251 GM SAGITTARII AND SAX J1819.3-2525 = XTE J1819-254 R. Stubbings, Drouin, Vic., Australia, reports that GM Sgr is undergoing a very bright outburst after showing recent rapid variations, his visual magnitude estimates being: Aug. 11.488 UT, 12.3; 14.436, 12.5; 29.424, 12.7; 31.496, 13.0; Sept. 9.462, 11.2; 11.599, 11.9; 12.409, 11.1; 13.397, 11.9; 14.491, 11.4; 15.395, 8.8; 15.408, 8.8. Additional m_v estimates by A. Pearce, Nedlands, W. Australia: Sept. 15.550, 9.5; 15.571, 9.6. IAUC 7253 The star attributed by Goranskij (1990, IBVS 3464) to GM Sgr has been measured on the Digital Sky Survey by G. V. Williams, Smithsonian Astrophysical Observatory, to be at R.A. = 18h19m21s.61, Decl. = -25o24'26".3 (equinox 2000.0; uncertainty +/- 1".0 in both coordinates); this is 1' north of the GCVS position from Luyten (1927, HCO Bull. No. 852). IAUC 7253 Guy M Hurst