GCN Circular 4216
Subject
GRB 051109a: IR Photometry and Astrometry
Event
Date
2005-11-09T04:17:16Z (20 years ago)
From
Josh Bloom at UC Berkeley <jbloom@astron.berkeley.edu>
J. S. Bloom (UC Berkeley), C. H. Blake (Harvard), D. Starr (Gemini)
and K. Alatalo (UC Berkeley) report:
"We have continued to observe the field of GRB 051109a (Tagliaferri
et al. 4213) at the position of the optical transient (GCNs 4211,
4214, 4215). Using a stack of PAIRITEL imaging from 2005-11-09
01:18:42.25 to 2005-11-09 01:33:14.94 UTC we find a 2MASS calibrated
photometry of J = 15.69 +/- 0.03, H = 14.95 +/- 0.03, Ks = 14.44
+/- 0.04. We also find an astrometric position of (J2000)
22:01:15.313, +40:49:23.31 with an uncertainty of 100 mas in each
axis. This is consistent with the Rykoff et al. position."
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