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THE ASTRONOMER Electronic Circular No 2198      2006 Feb 09 13.08UT
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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SUPERNOVA 2006X IN MESSIER 100 (NGC 4321)
News of a supernova in Messier 100 was evidently delayed by the late 
delivery of IAUC 8667 issued on Feb 7. The object was found
independently by Shoji Suzuki (Ooami-Shirasato, Chiba, Japan, via twelve 
CCD frames taken on Feb. 4 with a 0.32-m f/9 telescope + SBIG 
infrared-cut filter and by M. Migliardi, Cortina, Italy. The discovery 
was made on 2006 Feb 7.10UT at magnitude 15.3 at the following position:
RA 12h 22m 53.99s  DEC +15 48' 33.1", offsets 12" W, 48" S.

Additional CCD magnitudes: 2006 Jan. 3, [20 (Suzuki; magnitudes 
estimated by Soma); 13, [18.5 (CROSS; unfiltered images);
Feb. 4.747, 17 (Suzuki). Dimai adds that it does not appear on
Palomar Sky Survey infrared, red, and blue plates.

Guy M Hurst