Electronic Telegram No. 5271
Central Bureau for Astronomical Telegrams
Mailing address:  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


PSN J14033858+5418421 = SUPERNOVA 2023ixf IN M101
     Further to CBET 5265, S. LaRiccia revises his report to saying that a
stacked exposure from May 19.068 UT shows SN 2023ixf at mag about 17.3 (as
estimated by G. Chaple).  His report on CBET 5265 is to be disregarded.
Also, S. Limeburner was observing from Coudersport, PA, USA.
     T. Scarmato, Calabria, Italy, reports the following magnitudes obtained
on May 23.92 UT with a 0.25-m f/4.8 Newtonian reflector (+ CMOS camera) from
forty 60-s exposures (Tycho-2 catalogue star 3852-01069-1 used for reference;
GAIA2 magnitudes for G and B bands, USNO-B1 magnitudes for R):  G = 11.93,
R = 12.04, B = 8.13.
     J. Lau, Natick, MA, USA, obtained a stacked image with a 0.20-m
Schmidt-Cassegrain reflector of M101 showing SN 2023ixf rising during May
18.889-18.995 UT.


NOTE: These 'Central Bureau Electronic Telegrams' are sometimes
      superseded by text appearing later in the printed IAU Circulars.

                         (C) Copyright 2023 CBAT
2023 June 13                     (CBET 5271)              Daniel W. E. Green