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AAVSO Special Notice #195: Nova Oph 2010 No. 2 AAVSO HOME > publications > special notice

AAVSO Special Notice #195

Nova Oph 2010 No. 2
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:
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.

Good observing,

Elizabeth O. Waagen
Senior Technical Assistant


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