[vsnet-grb 377562] GCN/SWIFT_XRT_POSITION_UPDATE

[Bacodine]

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Tue 21 Aug 18 17:04:04 UT
NOTICE_TYPE:     Swift-XRT Position UPDATE
TRIGGER_NUM:     854578,   Seg_Num: 0
GRB_RA:            7.7883d {+00h 31m 09.19s} (J2000),
                   8.0157d {+00h 32m 03.77s} (current),
                   7.1769d {+00h 28m 42.45s} (1950)
GRB_DEC:         -38.6266d {-38d 37' 35.7"} (J2000),
                 -38.5238d {-38d 31' 25.7"} (current),
                 -38.9026d {-38d 54' 09.4"} (1950)
GRB_ERROR:       3.7 [arcsec radius, statistical plus systematic, 90% containment]
GRB_INTEN:       1.00e-10 [erg/cm2/sec]
GRB_SIGNIF:      10.00 [sigma]
IMG_START_DATE:  18351 TJD;   233 DOY;   18/08/21
IMG_START_TIME:  60424.00 SOD {16:47:04.00} UT,   389.5 [sec] since BAT Trigger Time
TAM[0-3]:        100.00 100.00 100.00 100.00
AMPLIFIER:       1
WAVEFORM:        31
SUN_POSTN:       150.75d {+10h 02m 59s}  +11.96d {+11d 57' 40"}
SUN_DIST:        137.57 [deg]   Sun_angle= 9.5 [hr] (West of Sun)
MOON_POSTN:      277.05d {+18h 28m 11s}  -20.64d {-20d 38' 37"}
MOON_DIST:        78.04 [deg]
MOON_ILLUM:      81 [%]
GAL_COORDS:      321.92,-77.74 [deg] galactic lon,lat of the burst
ECL_COORDS:      348.95,-37.94 [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:        The probability that this is a serendipitous source in the  
COMMENTS:        SPER window is 0.58% < P(seren) < 1.1%.