GCN Circular 12131
L. P. Xin and J.Y Wei reports: We noted that A. J. Levan reports (GCN 12126) that a source was detected in USNO-A2.0, with a magnitude of B=21.2, R=17.9. Its coordinates are: RA(J2000): 10:58:37.34 DEC(J2000): -23:27:21.6 Epoch:(J2000) We check the USNO-B1.0 catalog and find that this source above reported by Levan (GCN 12126) disappeared in USNO-B1.0 catalog. However, another source was detected in USNO-B1.0 at the errorbox of X-ray counterparts. Its coordinates are RA(J2000) 10:58:37.00 DEC(J2000) -23:27:19.94 Epoch:(J2000) Its magnitudes are reported as R=19.69, B=21.08. The coordinates are consistent with the report of Updike et al. (GCN 12129). Further observations are encouraged, especially the redshift measurement, to check out weather this source is the counterpart of GRB 110709B or just a foreground or background source.