------------------------------------------------------------------- THE ASTRONOMER Electronic Circular No 2717 2011 Mar 13 18.33UT 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 ------------------------------------------------------------------- QZ SERPENTIS Patrick Schmeer, Bischmisheim, Germany reports an outburst of QZ Ser with visual observations as follows: 20110309.04 <136 Scp 20110312.042 120 Scp 20110312.083 120 Scp Sequence: AAVSO Instrument: 203-mm SCT Only three outbursts of this cataclysmic variable have been observed: 1998 June 17.547 UT, mpg= 12.7 (Katsumi Haseda, vsnet-obs 18349) 2002 Feb. 4.228 UT, mv = 12.0 (Patrick Schmeer, vsnet-alert 7156) 2006 Dec. 29.235 UT, mv = 13.6 (Patrick Schmeer, vsnet-alert 9184) The mean cycle length of QZ Ser appears to be about four years. Comments added on vsnet-alert 12970: Please note that QZ Ser has a short orbital period comparable to SU UMa-type dwarf novae, but the secondary is massive. It would be interesting to see if the object can develop superhumps. SUPERNOVA 2011N IN ESO 120-16 = PSN J05513518-5902513 (CHASE) 2011N Jan 20.19 05 51 35.18 -59 02 51.3 17.8 0.6"W, 7.4"S Spectrum, Jan 25.05 heavily reddened type-Ic near maximum light. SUPERNOVA 2011O IN UGC 8829 = PSN J13541996+3255394 (LOSS) 2011O Jan 18.56 13 54 19.96 +32 55 39.4 18.1 0.8"E, 8.5"S Spectrum, Jan 26 type II SUPERNOVAE 2011P-2011S CRTS) 2011P Jan 5.10 02 25 44.80 +16 12 56.0 18.6 2011Q Jan 5.41 09 19 11.45 +39 42 29.2 19.0 1.0"W, 0.7"N 2011R Jan 14.37 09 58 30.13 -10 53 15.4 18.8 14.6"E, 2.1"S 2011S Jan 14.41 09 13 54.05 -17 00 39.3 17.6 0.5"E, 1.5"S Types: 2011P, IIn; 2011Q, Ia; 2011R, IIp; 2011S, IIn SUPERNOVA 2011T IN UGC 10733 = PSN J17100362+3230012 (Puckett) 2011T Jan 28.84 17 10 03.62 +32 30 01.2 16.3 22.9"W, 0.9"N Spectrum, Jan 31, normal type-Ia then a month after maximum. SUPERNOVA 2011U IN UGC 2985 (LOSS) 2011U Jan 28.22 04 13 33.94 +27 32 36.7 17.6 5.2"E, 6.7"N Spectrum, Feb 2, type-Ia, then a few days before maximum. SUPERNOVA 2011V IN MCG +05-22-48 (CRTS) 2011V Jan 28.29 09 27 38.76 +28 47 27.2 16.0 35 "E, 27 "S Spectrum, Feb 2, type-IIb one week past maximum. SUPERNOVA 2011W IN UGC 323 (LOSS) 2011W Jan 16.12 00 32 51.24 +11 44 07.5 18.6 12.0"E, 4.8"S Spectrum, Feb 2, type-II Guy M Hurst