------------------------------------------------------------------- THE ASTRONOMER Electronic Circular No 2307 2007 Feb 12 19.39UT 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 ------------------------------------------------------------------- V2362 CYGNI This 2006 nova is now becoming difficult in the evening sky but has also entered yet another interesting phase. As the updated light curve by the editor on the TA website shows the nova has now apparently stopped fading near magnitude 14.0. The light curve is at: http://www.theastronomer.org/vars/2007/v2362cyglc_v8.gif This nova is not following any of the standard types for decline and was the subject of part of a talk by Professor Nye Evans of Keele at last Saturday's Astrofest. This light curve along with a number of others for cataclysmic variables were updated by TA and provided for Nye's talk. Mike Simonsen, using a new sequence by Arne Henden, has placed a chart with fainter comparisons on the web at: http://tech.groups.yahoo.com/group/cvnet-discussion/files/ The cross reference between TA/BAA chart N/051.01 and the latest chart for the brighter comparisons is: AAVSO TA/BAA 101 A 112 C 116 D 125 E 127 F 128 G 131 H Arne comments that the nova has a very close companion due west. Information for the companion from psf-fit images: V B-V V-Rc Rc-Ic companion 15.325 0.866 0.431 0.484 errors 0.024 0.070 0.047 0.047 Could CCD observers please add to their reports whether the companion has been included in the measure, which would seem likely, as the separation is only 5 arcseconds. Given the very unusual nature of this nova, as emphasised by Nye Evans in his talk, it is vital that further observations are made in the early evening or dawn skies and reports sent daily to the editor with full estimate and comparisons used. Guy M Hurst