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M31 Nova Candidate

ATEL # 971; WeCAPP: A. Riffeser, S. Wilke, C. Ries (University Observatory Munich)
on 22 Dec 2006; 16:14 UT
Distributed as an Instant Email Notice (Nova)
Password Certification: Arno Riffeser (

Subjects: Optical, Nova

We report the discovery of a possible Nova in M31 at JD 2454090.357 (2006, Dez. 20.857 UT) detected with 17.8 mag at a position RA 00:42:21.09 DEC +41:13:45.3 J2000.0 on two 300-sec R-filtered CCD images obtained with the 0.8-m Ritchey-Chretien f/12.4 telescope at Wendelstein Observatory, Germany, using the MONochromatic Image CAmera with a Tektronix (SITe) TK1024 1kx1k chip with 24mu sq. pixels. Positional uncertainty is given as 0".1. Previous measurements show that the source was already present on JD 2454085.443 (2006 Dez. 15.943 UT) with 19.6 mag excess magnitude. At JD 2454084.38 (2006 Dez. 14.88 UT) no object at the position of the nova (limiting magnitude 21.7 in R) was visible.

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