Electronic Telegram No. 3730

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

SUPERNOVAE 2013gq IN NGC 2554

Further to CBET 3422, K. Blanchard, W. Zheng, S. B. Cenko, W. Li, and A.
V. Filippenko report the LOSS discovery of an apparent supernova in NGC 2554
on unfiltered KAIT images:

 SN       2013 UT       R.A. (2000.0) Decl.      Mag.      Offset
 2013gq   Mar. 25.19   8 17 53.46  +23 28 10.5   15.1    0".6 W, 9".1 S

A finding chart for the variable was posted at the following website URL:
http://astro.berkeley.edu/~zwk/findingchart/PSN_J08175346+2328105.jpg.  The
variable was designated PSN J08175346+2328105 when it was posted at the
Central Bureau's TOCP webpage and is here designated SN 2013gq based on the
spectroscopic confirmation reported below.  Additional magnitudes for 2013gq:
Mar. 13.19 UT, [18.5 (KAIT); 25.887, V = 15.2 (Johan Warell, Skurup, Sweden;
25-cm reflector + SXV-H9 camera; photometry uncertain due to closeness of
variable to the core of NGC 2554; scale 2".23/pixel; position end figures
53s.51, 11".2; USNO-B1 reference stars); 25.895, R = 13.6 (Warell; position
end figures 53s.49, 11".7); 26.119, 15.4 (L. Elenin, Lyubertsy, Russia, and I.
Molotov, Moscow; remotely taken with a 0.45-m f/2.8 telescope at the ISON-NM
Observatory near Mayhill, NM, USA; position end figures 53s.54 +/- 0".08,
11".3 +/- 0".06; UCAC-4 reference stars; limiting mag about 18.8; image
posted at http://spaceobs.org/images/TOCP/PSNJ08175346+2328105-20130326.png);
26.32, 15.1 (KAIT; also, R magnitude around 15.0); 27.115, 14.8 (Joseph
Brimacombe, Cairns, Australia; remotely using a 51-cm RCOS telescope + STL11K
camera at the New Mexico Skies observatory near Mayhill, NM; infrared filter,
bandpass > 700 nm; position end figures 53s.53, 10".7; image posted at URL
http://www.flickr.com/photos/43846774@N02/8599691309/); 31.857, 14.7 (S.
Foglia and G. Galli, Pogliano Milanese, Italy; 0.28-m f/6.8 Schmidt-Cassegrain
reflector + ST8XME camera; position end figures 53s.51, 10".4; UCAC-4
reference stars); 31.929, 14.6 (Federica Luppi and Luca Buzzi, Varese, Italy;
0.38-m f/6.8 reflector; position end figures 53s.54, 11".4; image posted at
website URL http://www.astrogeo.va.it/pub/TOCP/PSN_N2554.jpg).

Host galaxy info: vel= 4158 km/s ; 3.2" x 2.3"; 12.9; S0/a

SN type info: Ia

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