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AAVSO Special Notice #187: Possible Nova in Oph AAVSO HOME > publications > special notice

AAVSO Special Notice #187

Possible Nova in Oph
January 17, 2010

CBET 2128 indicates that Hideo Nishimura has discovered a new
outbursting object in Ophiuchus.  This object has magnitude 8.4
on Jan 15.857UT, and is located at

RA 17:39:40.94  DEC -21:39:47.9  J2000

No spectra have been reported, but K. Kadota has inspected
the 1997 DSS red plate and finds no object at this position,
with a limiting magnitude of 20.

We have a preliminary Tycho sequence, but will extend it fainter
with ASAS soon.  The object has not yet been assigned a VSX
identifier.  Note that there is a 10.3mag irregular variable
a few arcmin west of this position, so do not use it as a comparison
star.

An image from K. Itagaki can be found at
http://www.k-itagaki.jp/images/pn-sgr.jpg

This special notice prepared by A. Henden
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