------------------------------------------------------------------- THE ASTRONOMER Electronic Circular No 2665 2010 Aug 05 09.55UT 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 ------------------------------------------------------------------- PERSEID METEORS, 2010 P. Jenniskens, SETI Institute; and J. Vaubaillon, Institut de Mecanique Celeste et de Calcul des Ephemerides, Paris, report on CBET 2401 that the annual Perseid shower is expected to peak with a broad maximum around Aug.13d03h20m UT (solar longitude 140.14 deg, equinox 2000.0), with best viewing conditions in Europe in the early morning hours, while numerous long trails will be visible in the early evening hours in North America. In addition, a brief 1-hour period of elevated rates can occur from an encounter with dust ejected by comet 109P/Swift-Tuttle in 1479. Current models put this dust trail just outside of the earth's orbit. The peak time is predicted for Aug. 12d16h49m UT (solar longitude 139.7292 deg), which is an update from Jenniskens (2006, *Meteor Showers and their Parent Comets*, p.657). Editor: Further guidance on observing this year's shower has been available for some time on 'The Astronomer' webpage entitled 'Meteor Activity in 2010' at: http://www.theastronomer.org/forthcoming_meteors.html Please send your reports to Tony Markham, TA meteor editor, to arrive by the deadline of September 5. SUPERNOVA 2010ew IN ANONYMOUS GALAXY Discovery by M. Peoples, J. Newton and T. Puckett of a possible supernova (CBET 2345): SN 2010 UT R.A. (2000.0) Decl. Mag. Offset 2010ew Jun 28.39 18 37 11.88 +30 37 49.6 16.6 4.6"W, 7.1"N SUPERNOVA 2010ex IN PGC 70222 Discovery by F. Ciabattari, S. Donati, and E. Mazzoni, Italy of a possible supernova (CBET 2348): SN 2010 UT R.A. (2000.0) Decl. Mag. Offset 2010ex Jly 1.10 23 00 10.90 +26 05 57.2 16.1 7 "N On July 2.02 the object had brightened to mag 15.8. SUPERNOVA 2010ey IN ESO 548-76 Discovery by the CHASE Project of a possible supernova (CBET 2349): SN 2010 UT R.A. (2000.0) Decl. Mag. Offset 2010ey Jun 30.41 03 41 31.50 -19 54 00.4 16.9 4.7"W, 17.9"N SUPERNOVAE 2010ez-2010fu 22 moderate-redshift supernovae of mag 21-22r and designated as above have been announced on CBET 2350. SUPERNOVA 2010fv in NGC 5888 Discovery by LOSS of a possible supernova (CBET 2351): SN 2010 UT R.A. (2000.0) Decl. Mag. Offset 2010fv Jly 1.30 15 13 06.52 +41 16 05.5 20.1 9.4"W, 12.7"N The type-II supernova 2007Q also appeared in NGC 5888 SUPERNOVA 2010fw in UGC 10995 Discovery by LOSS of a possible supernova (CBET 2351): SN 2010 UT R.A. (2000.0) Decl. Mag. Offset 2010fw Jly 2.38 17 47 32.41 +64 01 24.3 18.4 2.3"W, 14.7"S Guy M Hurst