[vsnet-grb 317972] GCN/SWIFT_XRT_POSITION_UPDATE

[Bacodine]

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Fri 17 Mar 17 10:02:45 UT
NOTICE_TYPE:     Swift-XRT Position UPDATE
TRIGGER_NUM:     742866,   Seg_Num: 0
GRB_RA:           93.0611d {+06h 12m 14.66s} (J2000),
                  93.3976d {+06h 13m 35.41s} (current),
                  92.0832d {+06h 08m 19.96s} (1950)
GRB_DEC:         +50.4926d {+50d 29' 33.3"} (J2000),
                 +50.4872d {+50d 29' 13.9"} (current),
                 +50.5051d {+50d 30' 18.3"} (1950)
GRB_ERROR:       2.0 [arcsec radius, statistical plus systematic, 90% containment]
GRB_INTEN:       1.00e-10 [erg/cm2/sec]
GRB_SIGNIF:      10.00 [sigma]
IMG_START_DATE:  17829 TJD;    76 DOY;   17/03/17
IMG_START_TIME:  35251.00 SOD {09:47:31.00} UT,   91.9 [sec] since BAT Trigger Time
TAM[0-3]:        100.00 100.00 100.00 100.00
AMPLIFIER:       1
WAVEFORM:        31
SUN_POSTN:       357.25d {+23h 49m 01s}   -1.19d {-01d 11' 24"}
SUN_DIST:         94.83 [deg]   Sun_angle= -6.4 [hr] (East of Sun)
MOON_POSTN:      230.48d {+15h 21m 56s}  -13.17d {-13d 10' 23"}
MOON_DIST:       129.01 [deg]
MOON_ILLUM:      79 [%]
GAL_COORDS:      163.35, 14.80 [deg] galactic lon,lat of the burst
ECL_COORDS:       92.19, 27.08 [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%.