------------------------------------------------------------------- THE ASTRONOMER Electronic Circular No 3051 2014 Dec 30 19.58UT 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 ------------------------------------------------------------------- ASASSN-14MV: 1938 OUTBURST Denis Denisemko et. al., Moscow State University and others report on ATEL 6857 that following the posting of a bright CV candidate ASASSN-14mv located at: RA 07h13m27.25s DEC +20 55'52" (V=12.8 on 2014 Dec 29.32UT), they have checked the MASTER database around the position of this optical transient. The earliest MASTER-Kislovodsk observations of this field in Gemini were made in October 2009, MASTER-Amur - in January 2010, and MASTER-Tunka - in January 2011. The object was caught in the bright outburst during the first observations by MASTER-Tunka at 2011-01-31.611 UT (unfiltered magnitude 11.85) and 2011-01-31.643 UT (11.86m). The coordinates are: RA 07h 13m 27.25s DEC +20d 55m 54s.3. Since there were no reference images of this field in +MASTER-Tunka database in January 2011, the object was not detected as a transient. The object faded to 15.0m on the images obtained at 2011-02-26.610 and 2011-02-26.650 UT. The comparison of MASTER-Tunka images on 2011-01-31.611 UT (outburst) and on 2014-12-25.832 UT (our latest observation before the current outburst) is posted at http://master.sai.msu.ru/static/OT/ASASSN-14mv-MASTER-Tunka.jpg The object at quiescence is identical to the blue star USNO-A2.0 1050.04925422 (07 13 27.34 +20 55 54.9 R=17.7 B=16.8) = USNO-B1.0 1109-0151352 (07 13 27.28 +20 55 53.5 pmRA=-18 pmDE=-36 B1=17.31 R1=17.94 B2=17.58 R2=14.01 I=18.07). The star was in outburst on the 1991 Mar 07 POSS-II red plate and at quiescence on other 8 Palomar plates. Color-combined DSS finder chart is uploaded to http://master.sai.msu.ru/static/OT/ASASSN-14mv-BRIR.jpg There is an UV counterpart GALEX J071327.3+205553 (FUV=17.98+/-0.04) = GALEX J071327.5+205553 (NUV=17.43+/-0.02). There was no detection by ROSAT All-Sky Survey. This area of sky is not covered by SDSS. NEAT has 77 images of this field from 1995 Dec. 24 to 2002 Oct. 04. No additional outbursts were detected. However, probably the oldest outburst of this object was registered more than 75 years ago on Heidelberg Astronomical Plates D4995, D4996 and D4998 taken by A. Bohrmann on 1938-03-24 and 1938-03-25. Based on the blue colour, proper motion and outburst amplitude (~5m), ASASSN-14mv is a new cataclysmic variable, most likely a dwarf nova of SU UMa (UGSU) subtype. SUPERNOVA 2014dq IN ESO 467-G51 (G. BOCK) 2014dq Oct 20.59 22 23 16.09 -28 58 31.8 16.8r 6.8"W 19.7"N P. Challis: Oct 20 resembles the spectrum of the type-II supernova 2005cs. CBET 4008 issued Oct 29 SUPERNOVA 2014dr IN UGC 2705 9CATALINA REAL-TIME TRANSIENT SURVEY) 2014dr Oct 14.41 03 22 46.39 +00 09 20.7 16.6 12.5"W 23.0"N E. Cappellaro: spectrum Oct 23 indicates type-II. CBET 4009 issued Oct 30 SUPERNOVA 2014ds IN NGC 2536 (XINGMING SKY SURVEY) 2014ds Oct 11.93 08 11 16.45 +25 10 47.4 16.3: 6.0"E 1.7"N J.-j. Zhang: spectrum Oct 23 suggests type-IIb matching SN 2008ax CBET 4010 issued Oct 30 Guy M Hurst