Electronic Telegram No. 2679
Central Bureau for Astronomical Telegrams
INTERNATIONAL ASTRONOMICAL UNION
CBAT Director:  Daniel W. E. Green; Hoffman Lab 209; Harvard University;
 20 Oxford St.; Cambridge, MA  02138; U.S.A.
e-mail:  cbatiau@eps.harvard.edu (alternate cbat@iau.org)
URL http://www.cbat.eps.harvard.edu/index.html
Prepared using the Tamkin Foundation Computer Network


NOVA SAGITTARII 2011 No. 2 = PNV J18102135-2305306
     Koichi Nishiyama (Kurume, Japan) and Fujio Kabashima (Miyaki, Japan)
report their discovery of a possible nova (mag 11.7) on two 40-s unfiltered
CCD frames (limiting magnitude 13.2) taken around Mar. 27.832 UT using a
105-mm f/4 camera lens (+ SBIG STL6303E camera); they confirmed the object
on five 3-s unfiltered CCD frames (limiting magnitude 16.3) taken around Mar.
27.854 using a Meade 200R 0.40-m f/9.8 reflector (+ SBIG STL1001E camera).
The variable is located at R.A. = 18h10m21s.35, Decl. = -23d05'30".6 (equinox
2000.0); nothing is visible at this position on two past survey frames taken
on Mar. 17.814 (limiting mag 13.4) and 26.837 (limiting mag 13.2).  After
posting on the Central Bureau's TOCP webpage, the object was given the
provisional designation PNV J18102135-2305306.

     A. Arai, M. Nagashima, T. Kajikawa, and C. Naka, Koyama Astronomical
Observatory (KAO), Kyoto Sangyo University, report that low-resolution (R
about 550) spectra of PNV J18102135-2305306 were obtained at the KAO on Mar.
28.725 UT under a hazy sky.  The spectra show prominent emission lines of
H_alpha, H_beta, and Fe II (multiplets 42, 48, 49) on a highly reddened
continuum.  The FWHM of the H_alpha emission line is about 900 km/s, and
the Na D absorption line is also seen (equivalent width about 0.7 nm).
These features suggest that the object is a classical nova that is reddened by
interstellar matter.

     Hiroyuki Maehara, Kwasan Observatory, Kyoto University, reports that
CCD images of the nova obtained with a 0.25-m telescope at Kwasan Observatory
around Mar. 28.79 UT yield the following magnitudes:  Mar. 28.788, I_c =
10.17; 28.789, R_c = 11.40; 28.791, V = 12.86; 28.798, B = 14.47.
Seiichiro Kiyota (Tsukuba, Japan) writes that images obtained remotely with
a 31-cm f/6.3 reflector at the GRAS Observatory (located near Officer,
Victoria, Australia) on Mar. 28.670 yield magnitudes V = 12.81, R_c = 11.54,
I_c = 10.38, B = 14.66, and position end figures 21s.36, 29".9 for the nova.


NOTE: These 'Central Bureau Electronic Telegrams' are sometimes
      superseded by text appearing later in the printed IAU Circulars.

                         (C) Copyright 2011 CBAT
2011 March 29                    (CBET 2679)              Daniel W. E. Green