[vsnet-grb 261907] GCN/SWIFT_XRT_POSITION_UPDATE

[Bacodine]

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Wed 27 May 15 07:02:48 UT
NOTICE_TYPE:     Swift-XRT Position UPDATE
TRIGGER_NUM:     641698,   Seg_Num: 0
GRB_RA:          288.9599d {+19h 15m 50.37s} (J2000),
                 289.1512d {+19h 16m 36.29s} (current),
                 288.3386d {+19h 13m 21.25s} (1950)
GRB_DEC:          +4.2012d {+04d 12' 04.3"} (J2000),
                  +4.2292d {+04d 13' 45.0"} (current),
                  +4.1122d {+04d 06' 43.8"} (1950)
GRB_ERROR:       2.3 [arcsec radius, statistical plus systematic, 90% containment]
GRB_INTEN:       1.00e-10 [erg/cm2/sec]
GRB_SIGNIF:      10.00 [sigma]
IMG_START_DATE:  17169 TJD;   147 DOY;   15/05/27
IMG_START_TIME:  24618.00 SOD {06:50:18.00} UT,   82.2 [sec] since BAT Trigger Time
TAM[0-3]:        100.00 100.00 100.00 100.00
AMPLIFIER:       1
WAVEFORM:        31
SUN_POSTN:        63.80d {+04h 15m 12s}  +21.25d {+21d 15' 13"}
SUN_DIST:        128.79 [deg]   Sun_angle= 9.0 [hr] (West of Sun)
MOON_POSTN:      172.82d {+11h 31m 16s}   +1.55d {+01d 32' 52"}
MOON_DIST:       116.12 [deg]
MOON_ILLUM:      65 [%]
GAL_COORDS:       39.46, -3.49 [deg] galactic lon,lat of the burst
ECL_COORDS:      291.18, 26.26 [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%.