[vsnet-grb 281630] GCN/SWIFT_XRT_POSITION_UPDATE

[Bacodine]

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Thu 21 Jan 16 13:58:24 UT
NOTICE_TYPE:     Swift-XRT Position UPDATE
TRIGGER_NUM:     671231,   Seg_Num: 0
GRB_RA:          109.0891d {+07h 16m 21.38s} (J2000),
                 109.2579d {+07h 17m 01.89s} (current),
                 108.5634d {+07h 14m 15.21s} (1950)
GRB_DEC:         -23.5918d {-23d 35' 30.4"} (J2000),
                 -23.6212d {-23d 37' 16.1"} (current),
                 -23.5020d {-23d 30' 07.0"} (1950)
GRB_ERROR:       2.5 [arcsec radius, statistical plus systematic, 90% containment]
GRB_INTEN:       1.00e-10 [erg/cm2/sec]
GRB_SIGNIF:      10.00 [sigma]
IMG_START_DATE:  17408 TJD;    21 DOY;   16/01/21
IMG_START_TIME:  49953.00 SOD {13:52:33.00} UT,   115.3 [sec] since BAT Trigger Time
TAM[0-3]:        100.00 100.00 100.00 100.00
AMPLIFIER:       1
WAVEFORM:        31
SUN_POSTN:       303.17d {+20h 12m 42s}  -19.94d {-19d 56' 35"}
SUN_DIST:        134.37 [deg]   Sun_angle= -11.1 [hr] (East of Sun)
MOON_POSTN:       90.31d {+06h 01m 14s}  +18.38d {+18d 22' 47"}
MOON_DIST:        45.89 [deg]
MOON_ILLUM:      93 [%]
GAL_COORDS:      236.72, -5.39 [deg] galactic lon,lat of the burst
ECL_COORDS:      115.25,-45.37 [deg] ecliptic lon,lat of the burst
COMMENTS:        SWIFT-XRT Coordinates.  
COMMENTS:        There is a bright star (mag=6.32) 11.83 arcmin from the XRT position.  
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%.