[vsnet-grb 317349] GCN/SWIFT_XRT_POSITION_UPDATE

[Bacodine]

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Sat 11 Mar 17 08:23:03 UT
NOTICE_TYPE:     Swift-XRT Position UPDATE
TRIGGER_NUM:     741965,   Seg_Num: 0
GRB_RA:          280.5894d {+18h 42m 21.45s} (J2000),
                 280.8640d {+18h 43m 27.36s} (current),
                 279.7902d {+18h 39m 09.65s} (1950)
GRB_DEC:         -30.0457d {-30d 02' 44.5"} (J2000),
                 -30.0279d {-30d 01' 40.3"} (current),
                 -30.0950d {-30d 05' 41.8"} (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:  17823 TJD;    70 DOY;   17/03/11
IMG_START_TIME:  29456.00 SOD {08:10:56.00} UT,   133.0 [sec] since BAT Trigger Time
TAM[0-3]:        100.00 100.00 100.00 100.00
AMPLIFIER:       1
WAVEFORM:        31
SUN_POSTN:       351.69d {+23h 26m 45s}   -3.58d {-03d 35' 04"}
SUN_DIST:         71.63 [deg]   Sun_angle= 4.7 [hr] (West of Sun)
MOON_POSTN:      157.54d {+10h 30m 10s}   +9.75d {+09d 44' 48"}
MOON_DIST:       123.60 [deg]
MOON_ILLUM:      98 [%]
GAL_COORDS:        4.86,-11.41 [deg] galactic lon,lat of the burst
ECL_COORDS:      279.22, -6.94 [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:        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%.