February 20, 2010: Central Bureau for Astronomical Telegrams CBET 2176 (Daniel W. E. Green, ed.) announces the discovery by Hideo Nishimura, Miyawaki, Kakegawa, Shizuoka-ken, Japan, of a probable nova (confirmed in CBET 2179). Discovery was Feb. 18.845 UT at magnitude 9.4, on two 13-s frames using a Minolta 120-mm f/3.5 lens and a Canon EOS 5D Digital camera mounted on a Takahashi EM100 equatorial telescope. After posting on the Central Bureau's unconfirmed-objects webpage, confirmation of the new object was reported by several observers, some of whom also gave very slightly differing position end figures.
Coordinates: R.A. = 17:26:32.19 Decl. = -28:49:36.3 (+/- 4")(2000.0)
measured by S. Nakano on H. Nishimura's image.
According to CBET 2179 (Green), spectroscopy by K. Imamura and K. Tanabe, Okayama University of Science, Japan, obtained on Feb. 19.850 UT indicates that the object is a classical nova. Also, spectroscopy by M. Fujii, Kurashiki, Okayama, Japan, on Feb. 19.86 is a "Fe II class" nova.
Finder charts for N Oph 2010 No. 2 may be plotted by entering the coordinates above into VSP: http://www.aavso.org/vsp
Links to images of the nova may be found in CBETs 2176 and 2179.
Please report all observations to the AAVSO as N OPH 2010 NO. 2, VSX J172632.1-284938, or its AUID 000-BJT-243; N OPH 2010 NO. 2 is preferred.
Elizabeth O. Waagen Senior Technical Assistant
SUBMIT OBSERVATIONS TO THE AAVSO Information on submitting observations to the AAVSO may be found at: http://www.aavso.org/observing/submit/
SPECIAL NOTICE ARCHIVE AND SUBSCRIPTION INFORMATION A Special Notice archive is available at the following URL: http://www.aavso.org/publications/specialnotice/
Subscribing and Unsubscribing may be done at the following URL: http://www.aavso.org/publications/email/