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GCN Circular 963

GRB010222: possible optical counterpart
2001-02-22T13:12:07Z (23 years ago)
Krzysztof Z. Stanek at CfA <>
J. McDowell, R. Kilgard (Harvard-Smithsonian CfA), P. M. Garnavich
(Notre Dame), K. Z. Stanek and S. Jha (Harvard-Smithsonian CfA)

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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