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THE ASTRONOMER Electronic Circular No 2919      2013 Jun 02 10.37UT
Ed:Guy M Hurst, 16,Westminster Close, Kempshott Rise,  Basingstoke,
Hants, RG22 4PP,England.Telephone/FAX(01256)471074Int:+441256471074
INTERNET: GUY@TAHQ.DEMON.CO.UK      Backup: gmh@wdcc1.bnsc.rl.ac.uk
WORLD WIDE WEB                         http://www.theastronomer.org
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PNV J19150199+0719471 (=ERUPTIVE OBJECT IN AQUILA)
K. Itagaki, Yamagata, Japan reports the detection of an eruptive object in
Aquila on a survey image of 2013 May 31.597UT using a 0.21-m reflector and
CCD.

The object, of unfiltered magnitude 10.8 is located at:
RA 19h 15m 01.99s +07 19' 47.1" (2000)

Itagaki comments it was below magnitude 15.5 on his survey picture of May
21.608UT. An image can be seen at:
http://www.k-itagaki.jp/images/pnv-aql.jpg

Tadaski Kojima, Gunma-ken, Japan reports a pre-discovery image 
of 2013 May 30.721UT when the magnitude was 9.8. The image was taken with a
Canon Digital camera with a 85mm f/2.8 lens giving a limiting magnitude of
13.
Martin Mobberley reported a confirmation image was obtained on 2013 June
1.332UT using itel, New Mexico 0.43-m f/6.8 CDK + PL6303E with an exposure
of 60 seconds.

A location chart and sequence is available via the AAVSO home page quoting
the PNV temporary designation.
Brian Skiff comments on VSNET:
I notice that the star appears to be a blue object with modest proper motion
that has been previously reported as an IPHAS H-alpha emission candidate
(from colours, not a spectrum). The motion is easy to see by blinking the
POSS-I and -II blue plate-scans. The USNO-B1.0 motion, -94,-88 mas/year is
about right, though there is an unlinked detection. PPMXL gives similar
values, since it derives largely from USNO-B1.0 anyways.  The large motion
seems to argue for some sort of dwarf nova outburst rather than a more
classical galactic nova eruption. Notice that the star is quite blue, and
more-or-less disappears in the near-IR --- no 2MASS or WISE detection. The
IPHAS entry is:  IPHAS J191502.09+071947.6, shown with Sloan r mag 18.5.  

Guy M Hurst