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THE ASTRONOMER Electronic Circular No 2529      2009 Feb 25 19.31UT
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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COMET C/2007 N3 (LULIN)
Observers are reminded that this comet is due to make an apparent close 
approach to Regulus from Feb 27.0 to Mar 1.0. Charts by Reinder Bouma, 
The Netherlands, can be found at:
http://www.shopplaza.nl/astro/
Please send in your results by the deadline of March 5 for the next 
issue of 'The Astronomer.

SUPERNOVA 2009Y IN NGC 5728
Discovery by Ralph Martin, Perth of a possible supernova (CBET 1684):
SN      2009 UT      R.A.  (2000.0)  Decl.    Mag.     Offset
2009Y   Feb  1.77   14 42 23.85  -17 14 48.4  16       9  "E,24.6"N
An independent discovery was made by C. Griffith et. al., University of 
California, on unfiltered KAIT images taken in the course of the Lick 
Observatory Supernova Search.

SUPERNOVA 2009Z IN ANONYMOUS GALAXY
Discovery by LOSS of a possible supernova (CBET 1685):
SN      2009 UT      R.A.  (2000.0)  Decl.    Mag.     Offset
2009Z   Feb. 2.53   14 01 53.61  -01 20 30.2  18.1     2.7"W, 4.1"N

SUPERNOVA 2009aa IN ESO 570-G20
Discovery by LOSS of a possible supernova (CBET 1685):
SN      2009 UT      R.A.  (2000.0)  Decl.    Mag.     Offset
2009aa  Feb. 3.40   11 23 42.28  -22 16 14.5  17.6    19.2"E, 0.5"S
M. Stritzinger etl., on behalf of the Carnegie Supernova Project,
obtained spectra on Feb. 8.1-8.2 UT with the 6.5-m Magellan II (Clay) 
telescope (+ LDSS3). A spectrum of 2009aa appears to be that of a young 
type-Ia supernova.  With the aid of SNID, they find an excellent match 
to SN 2002er at one week before maximum.

Guy M Hurst