Special Notice #237: Nova Sagittarii 2011 No. 2 = PNV J18102135-2305306
March 28, 2011: We have been informed by the Central Bureau for Astronomical Telegrams (Central Bureau Electronic Telegram 2679, Daniel W. E. Green, ed.) that Koichi Nishiyama, Kurume, Japan, and Fujio Kabashima, Miyaki, Japan, report their discovery of a possible nova at magnitude 11.7 on two unfiltered CCD frames taken around March 27.832 UT. They confirmed the object on images taken on March 27.832 UT. After posting on the Central Bureau's Transient Objects Confirmation Page (TOCP) webpage, the object was given the provisional name PNV J18102135-2305306.
Low resolution spectra taken March 28.725 UT by A. Arai, M. Nagashima, T. Kajikawa, and C. Naka, Koyama Astronomical Observatory, Kyoto Sangyo University, suggest that N Sgr 2011 No. 2 is a classical nova that is reddened by interstellar matter.
Coordinates: R.A. 18:10:21.35 Dec. -23:05:30.6 (equinox 2000.0)
N Sgr 2011 No. 2 has been entered into VSX and assigned the identifier VSX J181021.3-230530. Finder charts for N Sgr 2011 No. 2 may be plotted by entering the coordinates above in the International Variable Star Plotter: http://www.aavso.org/vsp
Please report observations to the AAVSO International Database as N SGR 2011 NO. 2.
This AAVSO Special Notice was compiled by Elizabeth O. Waagen.
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