[vsnet-grb 158626] GCN/SWIFT_XRT_POSITION_UPDATE

[Bacodine]

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Wed 21 Sep 11 14:05:05 UT
NOTICE_TYPE:     Swift-XRT Position UPDATE
TRIGGER_NUM:     503652,   Seg_Num: 0
GRB_RA:          294.0978d {+19h 36m 23.47s} (J2000),
                 294.2042d {+19h 36m 49.00s} (current),
                 293.6441d {+19h 34m 34.58s} (1950)
GRB_DEC:         +36.3286d {+36d 19' 42.9"} (J2000),
                 +36.3553d {+36d 21' 19.0"} (current),
                 +36.2159d {+36d 12' 57.3"} (1950)
GRB_ERROR:       2.2 [arcsec radius, statistical plus systematic, 90% containment]
GRB_INTEN:       1.00e-10 [erg/cm2/sec]
GRB_SIGNIF:      10.00 [sigma]
IMG_START_DATE:  15825 TJD;   264 DOY;   11/09/21
IMG_START_TIME:  50019.00 SOD {13:53:39.00} UT,   138.8 [sec] since BAT Trigger Time
TAM[0-3]:        100.00 100.00 100.00 100.00
AMPLIFIER:       1
WAVEFORM:        31
SUN_POSTN:       178.39d {+11h 53m 34s}   +0.70d {+00d 41' 52"}
SUN_DIST:        110.09 [deg]   Sun_angle= -7.7 [hr] (East of Sun)
MOON_POSTN:      100.78d {+06h 43m 08s}  +21.06d {+21d 03' 33"}
MOON_DIST:       121.20 [deg]
MOON_ILLUM:      40 [%]
GAL_COORDS:       70.09,  7.49 [deg] galactic lon,lat of the burst
ECL_COORDS:      306.84, 56.73 [deg] ecliptic lon,lat of the burst
COMMENTS:        SWIFT-XRT Coordinates.  
COMMENTS:        This Notice was ground-generated -- not flight-generated.  
COMMENTS:        This is an Update Notice -- the RA,Dec values herein supersede the previous XRT_POS Notice.  
COMMENTS:        TAM values, flux and significance fields are not valid.  
COMMENTS:        This position was automatically generated on the ground using  
COMMENTS:        Photon Counting data telemetered via TDRSS (SPER data).  
COMMENTS:        See http://www.swift.ac.uk/sper/docs.php for details.  
COMMENTS:        This position was enhanced using UVOT field astrometry.  
COMMENTS:        The probability that this is a serendipitous source in the  
COMMENTS:        SPER window is 0.58% < P(seren) < 1.1%.