[vsnet-grb 289153] GCN/SWIFT_XRT_POSITION_UPDATE

[Bacodine]

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Sun 17 Apr 16 04:37:04 UT
NOTICE_TYPE:     Swift-XRT Position UPDATE
TRIGGER_NUM:     683076,   Seg_Num: 0
GRB_RA:          120.2567d {+08h 01m 01.60s} (J2000),
                 120.4759d {+08h 01m 54.22s} (current),
                 119.5834d {+07h 58m 20.02s} (1950)
GRB_DEC:          +7.6627d {+07d 39' 45.7"} (J2000),
                  +7.6168d {+07d 37' 00.6"} (current),
                  +7.8016d {+07d 48' 05.6"} (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:  17495 TJD;   108 DOY;   16/04/17
IMG_START_TIME:  16000.00 SOD {04:26:40.00} UT,   179.0 [sec] since BAT Trigger Time
TAM[0-3]:        100.00 100.00 100.00 100.00
AMPLIFIER:       1
WAVEFORM:        31
SUN_POSTN:        25.63d {+01h 42m 31s}  +10.62d {+10d 37' 13"}
SUN_DIST:         93.32 [deg]   Sun_angle= -6.3 [hr] (East of Sun)
MOON_POSTN:      153.95d {+10h 15m 49s}   +8.93d {+08d 56' 04"}
MOON_DIST:        33.14 [deg]
MOON_ILLUM:      79 [%]
GAL_COORDS:      213.93, 18.94 [deg] galactic lon,lat of the burst
ECL_COORDS:      120.78,-12.60 [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%.