------------------------------------------------------------------- THE ASTRONOMER Electronic Circular No 2340 2007 May 26 12.23UT 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 Backup: gmh@wdcc1.bnsc.rl.ac.uk WORLD WIDE WEB http://www.theastronomer.org ------------------------------------------------------------------- KX AQUILAE Jeremy Shears, Bunbury Observatory, England reports that the recurrent object programme star, KX Aquilae is in outburst. On 2007 May 26.013UT, the unfiltered CCD magnitude was 14.1. Ian Miller, also reports a V mag of 13.5 for 2007 May 26.118UT. Gary Poyner adds: Jeremy Shears has detected a rare outburst of this UGSU star (and UGWZ candidate). The last outburst occurred in December 1994 at mag 15.0. Previous to that it was Nov. 1980 at mag 11.5. There could have been others missed of course, as KX Aql has a month or so when it is very difficult to get at in the morning sky during late Winter. This should be treated as a priority target, with time resolved photometry carried out as often as possible. Jeremy Shears, in a subsequent e-mail, adds that he performed two hours of photometry from May 26.013 this morning until dawn. Preliminary analysis shows that KX Aql was continuously brightening from 14.1 to 13.8C during this period, indicating that the outburst was still developing. There are some small inflexions superimposed on this general brightening trend. V589 HERCULIS Jeremy Shears also reports an outburst of the recurrent objects programme star, V589 Herculis. The unfiltered CCD magnitude on May 20.945UT was 14.9. Gary Poyner, Birmingham, England reports follow-up visual observations: 2007 May 22.010, 15.1v; 2007 May 23.024, 15.0 SUPERNOVA 2007ca IN MCG -02-34-61 Discovery by R. Prasad and W. Li of a possible supernova (CBET 945): SN 2006 UT R.A. (2000.0) Decl. Mag. Offset 2007ca Apr. 25.34 13 31 05.81 -15 06 06.6 16.7 25.1"E, 1.7"S Type-Ia found near maximum brightness SUPERNOVA 2007cb IN ESO 510-G31 Discovery by LOSS of a possible supernova (CBET 949): SN 2006 UT R.A. (2000.0) Decl. Mag. Offset 2007cb Apr. 27.35 13 58 17.20 -23 22 20.7 16.8 0.9"E, 3.5"S Type-Ia, found two weeks past maximum SUPERNOVA 2007cc IN ESO 578-G26 Discovery by LOSS of a possible supernova (CBET 949): SN 2006 UT R.A. (2000.0) Decl. Mag. Offset 2007cc Apr. 27.35 14 08 41.98 -21 35 48.4 15.9 1.2"E, 2.7"N Type-Ia, two weeks past maximum from spectrum of May 9 Guy M Hurst