2010CBET.2162....1L

Further to CBET 2111, V. Lipunov, Sternberg Astronomical Institute, reports the discovery by Pavel Balanutsa of an apparent supernova (magnitude R = 14.3) on four CCD images (limiting mag 18.6) taken during Feb. 4.096-4.13 UT with the MASTER robotic-telescopes network at Kislovodsk. The new object is located at R.A. = 14:28:38.46, Decl. = +30:38:09.5 (equinox 2000.0), which is 1" west and 4".5 south of the center of PGC 51710. Nothing is visible at this position on images taken on 2004 May 14.9 (limiting unfiltered mag about 19.0). Images of 2010V have been posted at website URL http://observ.pereplet.ru/images/SN04feb10/SN100204.jpg. Following posting on the Central Bureau's unconfirmed-objects webpage, M. Nissinen and V.-P. Hentunen (Varkaus, Finland) report that they obtained confirming images (limiting red mag 17.2) of 2010V on 2010 Feb. 7.35 UT remotely with the GRAS004 Epsilon 25-cm f/3.4 Global-Rent-a-Scope telescope (+ SBIG ST-10 CCD camera) near Mayhill, NM, USA, yielding magnitude R = 15.3 ± 0.1 and position end figures 38s.53, 09".7; they comment that a better offset is 5".9 west and 4".6 north of the center of the galaxy PGC 51710, adding that nothing is visible at this position on a red Digitized Sky Survey (DSS) plate. They have posted their image of 2010V at the following website URL: http://cutenews.kassiopeia.net/data/upimages/pgc51710.png. T. Yusa (Osaki, Miyagi-ken, Japan) also obtained 120-s unfiltered CCD images (limiting mag 18.5) of 2010V remotely with a 25-cm f/3.4 reflector at the same RAS Observatory site, yielding mag 16.2 on Feb. 7.419 and mag 16.0 on Feb. 7.444, with position end figures 38s.44 ± 0s.01, 09".4 ± 0".1 (and offset 7".6 west, 5".8 north), adding that nothing is visible at this position on DSS images from 1950 Dec. 4 and 1991 Apr. 17 (red plate). Yusa has posted his image at website URL http://space.geocities.jp/yusastar/PSN100207.htm.