[vsnet-grb 74] GRB010222: confirmation optical counterpart

[erik kuulkers <erikk@sron.nl>]

---------- Forwarded message ----------
Date: Thu, 22 Feb 2001 08:17:45 -0500 (EST)
From: GCN Circulars <gcncirc@lheawww.gsfc.nasa.gov>
Reply-To: scott@milkyway.gsfc.nasa.gov
To: erikk@sron.nl
Subject: GRB010222: possible optical counterpart

TITLE:   GCN GRB OBSERVATION REPORT
NUMBER:  963
SUBJECT: GRB010222: possible optical counterpart
DATE:    01/02/22 13:12:07 GMT
FROM:    Krzysztof Z. Stanek at CfA  <kstanek@cfa.harvard.edu>

J. McDowell, R. Kilgard (Harvard-Smithsonian CfA), P. M. Garnavich
(Notre Dame), K. Z. Stanek and S. Jha (Harvard-Smithsonian CfA)
report:

We have an independent detection of a new source in the revised SAX
error box (GCN 960). Its position, based on the GSC, agrees with that
of Henden (GCN 962): 14:52:12.55 43:01:06.26 (J2000).

Comparing to star "A" (R=17.0) from the USNO catalog (located at
14:52:07.55 42:58:48.66), we estimate the R-band magnitude of the
possible GRB010221 afterglow to be R=18.4\pm 0.1.

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