------------------------------------------------------------------- THE ASTRONOMER Electronic Circular No 2363 2007 Aug 08 11.01UT 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 ------------------------------------------------------------------- RS OPHIUCHI John Toone, Cressage, England reports that RS Ophiuchi has brightened significantly over the past 2 weeks as evidenced by his visual observations with a Celestron 8: 2007 Jul 26, 2237GMT U(1)V(2)X 11.7 2007 Jul 29 2230GMT = U 11.5 2007 Jul 31 2229GMT P(4)V(1)U 11.3 2007 Aug 2 2230GMT P(3)V(2)U 11.0 2007 Aug 4 2222GMT P(2)V(3)U 10.8 2007 Aug 7 2216GMT = P 10.3 Gary Poyner, Birmingham, England confirms the brightening. On 2007 Aug 7.920 he estimated the variable at visual magnitude 10.3 (0.22-m, seq. AAVSO). (6265) 1985 TW3 D. Higgins, Canberra, Australia; and P. Pravec and P. Kusnirak, Ondrejov Observatory, report on CBET 1015 that photometric observations obtained during July 15-25 reveal that minor planet (6265) is a binary system with an orbital period of 15.86 +/- 0.01 hr. The primary shows a period of 2.7091 +/- 0.0001 hr, and it has a light curve amplitude of 0.28 mag. S/2007 (702) 1 P. Rojo, Universidad de Chile; and J. L. Margot, Cornell University, report on CBET 1016 the discovery on July 26.3 UT of a satellite of (702) Alauda (V = 11.9) from adaptive-optics imaging with the ESO 8-m Very Large Telescope UT4/YEPUN on Cerro Paranal, Chile. On July 26.265 UT, the companion was at a separation of 0".58 (projected separation about 900 km) in p.a. 20 deg. This is the first satellite discovered to a large minor planet of type B in the SMASSII taxonomy. Alauda (a = 3.2 AU, e = 0.02, i = 21 deg) has been identified as the largest member of a dynamical family. COMETS 189P/NEAT AND 190P/MUELLER Comet P/2007 N2 = P/2002 O5 has been given the permanent number 189P, and comet P/2007 O2 = P/1998 U2 (see TA E-Circular 2362) has been given the permanent number 190P. SUPERNOVA 2007gh IN ANONYMOUS GALAXY Discovery by Nearby Supernova Factory of a possible supernova (The Astronomer's Telegram 1166): SN 2006 UT R.A. (2000.0) Decl. Mag. Offset 2007gh Jly 29 02 10 31.08 +02 19 59.3 19.1R - - The designation was added on CBET 1014 Guy M Hurst