GCN Circular 6567
Subject
GRB 070621: UVOT-enhanced XRT position
Date
2007-06-22T08:56:15Z (17 years ago)
From
Boris Sbarufatti at INAF-IASF-Pa <sbarufatti@ifc.inaf.it>
B. Sbarufatti (INAF-IASF Pa), P. A. Evans (LU) report on behalf of
the Swift team
Using 746 s of overlapping XRT Photon Counting mode and UVOT V-band
data, we find an astrometrically corrected X-ray position (using the
XRT-UVOT
alignment and matching UVOT field sources to the USNO-B1 catalogue):
RA, Dec =
323.79225, -24.81752 which is equivalent to:
RA (J2000): 21 35 10.10
Dec (J2000): -24 49 03.1
with an uncertainty of 2.0 arcsec (90% confidence).