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THE ASTRONOMER Electronic Circular No 2355      2007 Jly 15 15.31UT
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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NOVA IN MESSIER 31, 2007-11
E. Ovcharov (SU, Sofia) et. al., report the discovery on The 
Astronomer's Telegram 1139 of an apparent nova located at:
RA 00h 42m 45.84s, DEC +41 18' 02.7" (2000), which is 17.1"E and 114.2"N 
of the centre of Messier 31. Available R-band magnitudes from 3x300s CCD 
images taken with the 50/70cm Schmidt telescope at NAO Rozhen, Bulgaria: 
July 11.019, 18.6+/-0.2.

D. Hatzidimitiou (Department of Astrophysics, University of Crete, UOC) 
adds on 'The Astronomer's Telegram 1141:
We report pre-discovery observations and confirmation in Halpha and R of 
this nova candidate The data were taken as part of a monitoring campaign 
of the M 31 central region for optical
nova candidates, using the 1.3m Ritchey Chretien f/7.5 telescope at
Skinakas Observatory, Crete, Greece. We confirm the candidate 2007-11 as 
a nova as it shows up as a bright Halpha source. We determine
magnitudes from a photometric solution using R magnitudes of the
Massey M31 catalogue for both the Halpha and R images. Our detections 
were: in Halpha 2007, July 8.053,18.0+-0.3; July 10.042, 17.5+-0.2; July 
11.042, 17.1+-0.1; in R July 9.058, [18.4; July 11.010, 17.7+-0.1. The 
object was rising in Halpha at least 3 days prior to its discovery in R 
by Ovcharov et al. We find a position of:
RA 00h 42m 45.89s DEC +41 18' 04.2" with an accuracy of 0.2".
It should be noted that according to our estimate the nova appeared to 
be 0.9 mag brighter in R than reported in ATEL#1139 for about the same 
time on July 11.

SUPERNOVAE 2007ev, 2007ew, 2007ex, 2007ey, 2007ez, 2007fa
Further supernovae reported by the "Nearby Supernova Factory" 
collaboration (cf TA E-Circular 2354):
SN       2007 UT       R.A. (2000.0) Decl.      Mag.    z      Type
2007ev   June 27.3   22 40 06.18  +24 41 57.1   18.1   0.04    Ia
2007ew   June 28.2   15 15 59.13  + 4 34 03.3   19.5   0.03    II
2007ex   June 28.4    0 26 49.89  +21 10 49.3   19.7   0.10    Ia
2007ey   June 29.2   15 12 21.36  +12 30 03.7   19.7   0.11    Ia
2007ez   June 30.4   23 29 29.57  +10 31 54.3   18.5   0.04    Ia
2007fa   June 30.4   23 42 13.68  +11 04 28.5   19.8   0.06    II

SUPERNOVA 2007fb IN UGC 12859
Discovery by D. Madison and W. Li of a possible supernova (CBET 992):
SN      2006 UT      R.A.  (2000.0)  Decl.    Mag.     Offset
2007fb  Jly  03.47  23 56 52.37  +05 30 31.8  15.7   12.8"W, 2.5"N

R CORONAE BOREALIS
Numerous observers have reported fluctuations in this star over recent 
weeks ranging from about magnitude 6.0-6.9.
The earliest report, dated 2007 June 16, was by Colin Henshaw observing 
from Saudi Arabia who sent a mobile telephone text message which was 
received by the editor during a recent holiday in Austria. Initial 
messages relating to this star are often withheld from these circulars 
to avoid introduction of bias in the observations. It is still not clear 
if the current activity represents a full fade but latest estimates 
place it at about 6.9.

Guy M Hurst