[vsnet-grb 326734] GCN/SWIFT_XRT_POSITION_UPDATE

[Bacodine]

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Wed 24 May 17 20:03:21 UT
NOTICE_TYPE:     Swift-XRT Position UPDATE
TRIGGER_NUM:     754322,   Seg_Num: 0
GRB_RA:          319.4868d {+21h 17m 56.83s} (J2000),
                 319.6383d {+21h 18m 33.19s} (current),
                 319.0516d {+21h 16m 12.38s} (1950)
GRB_DEC:         +48.6064d {+48d 36' 23.0"} (J2000),
                 +48.6801d {+48d 40' 48.3"} (current),
                 +48.3954d {+48d 23' 43.5"} (1950)
GRB_ERROR:       4.1 [arcsec radius, statistical plus systematic, 90% containment]
GRB_INTEN:       1.00e-10 [erg/cm2/sec]
GRB_SIGNIF:      10.00 [sigma]
IMG_START_DATE:  17897 TJD;   144 DOY;   17/05/24
IMG_START_TIME:  71438.00 SOD {19:50:38.00} UT,   82.7 [sec] since BAT Trigger Time
TAM[0-3]:        100.00 100.00 100.00 100.00
AMPLIFIER:       1
WAVEFORM:        31
SUN_POSTN:        61.83d {+04h 07m 20s}  +20.91d {+20d 54' 53"}
SUN_DIST:         82.08 [deg]   Sun_angle= 6.8 [hr] (West of Sun)
MOON_POSTN:       48.73d {+03h 14m 55s}  +12.95d {+12d 57' 18"}
MOON_DIST:        79.71 [deg]
MOON_ILLUM:      1 [%]
GAL_COORDS:       90.88, -0.52 [deg] galactic lon,lat of the burst
ECL_COORDS:      349.22, 59.22 [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 1.1% < P(seren) < 2.8%.