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AAVSO Special Notice #176: Possible Nova in Scutum AAVSO HOME > publications > special notice

AAVSO Special Notice #176

Possible Nova in Scutum
November 9, 2009

CBET #2008 (D.W.E. Green, editor) announced the discovery of a possible
nova in Scutum on November 8, 2009. The new object was discovered by
Hideo Nishimura (Miyawaki, Kakegawa, Japan) on 2009 Nov 8.37 UT (JD
2455143.87) who found the object near magnitude 8 on an image taken with
a 120-mm camera lens and DSLR. The new object has since been confirmed
by E. Guido and G. Sostero using a Global Rent-a-Scope telescope near
Mayhill, New Mexico, USA on 2009 Nov 09.08 UT (JD 2455144.58).  Guido
and Sostero report an unfiltered magnitude of 8.5, and provide the
following astrometry of the new object:

        RA: 18:43:45.57 , Dec: -07:36:42.0 (J2000)

Guido and Sostero also note that there is no unambiguous progenitor
candidate down to a limiting red magnitude of 20 present on DSS images
of the field.

The object has not yet been confirmed spectroscopically as a nova,
although such a classification is presumed.  Pending final
classification, please submit all observations of this object to the
AAVSO using the VSX designation "VSX J184345.5-073642".

An Alert Notice will be issued if the object is confirmed as a nova.

This AAVSO Special Notice was prepared by M. Templeton.

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