[vsnet-grb 413763] GCN/SWIFT_XRT_POSITION_UPDATE

[Bacodine]

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Thu 18 Jul 19 05:09:56 UT
NOTICE_TYPE:     Swift-XRT Position UPDATE
TRIGGER_NUM:     915091,   Seg_Num: 0
GRB_RA:          336.5761d {+22h 26m 18.26s} (J2000),
                 336.8641d {+22h 27m 27.37s} (current),
                 335.8368d {+22h 23m 20.83s} (1950)
GRB_DEC:         -41.2040d {-41d 12' 14.4"} (J2000),
                 -41.1041d {-41d 06' 14.6"} (current),
                 -41.4587d {-41d 27' 31.4"} (1950)
GRB_ERROR:       2.1 [arcsec radius, statistical plus systematic, 90% containment]
GRB_INTEN:       1.00e-10 [erg/cm2/sec]
GRB_SIGNIF:      10.00 [sigma]
IMG_START_DATE:  18682 TJD;   199 DOY;   19/07/18
IMG_START_TIME:  16957.00 SOD {04:42:37.00} UT,   81.8 [sec] since BAT Trigger Time
TAM[0-3]:        100.00 100.00 100.00 100.00
AMPLIFIER:       1
WAVEFORM:        31
SUN_POSTN:       117.28d {+07h 49m 08s}  +21.07d {+21d 04' 11"}
SUN_DIST:        141.10 [deg]   Sun_angle= 9.4 [hr] (West of Sun)
MOON_POSTN:      312.97d {+20h 51m 52s}  -19.77d {-19d 46' 12"}
MOON_DIST:        29.46 [deg]
MOON_ILLUM:      98 [%]
GAL_COORDS:      358.11,-57.15 [deg] galactic lon,lat of the burst
ECL_COORDS:      322.15,-29.04 [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%.