[vsnet-grb 202708] GCN/SWIFT_XRT_POSITION_UPDATE

[Bacodine]

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Sat 11 May 13 11:43:50 UT
NOTICE_TYPE:     Swift-XRT Position UPDATE
TRIGGER_NUM:     555600,   Seg_Num: 0
GRB_RA:          196.6449d {+13h 06m 34.77s} (J2000),
                 196.8088d {+13h 07m 14.11s} (current),
                 196.0311d {+13h 04m 07.46s} (1950)
GRB_DEC:         +18.7097d {+18d 42' 34.9"} (J2000),
                 +18.6385d {+18d 38' 18.5"} (current),
                 +18.9769d {+18d 58' 36.7"} (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:  16423 TJD;   131 DOY;   13/05/11
IMG_START_TIME:  41526.00 SOD {11:32:06.00} UT,   78.6 [sec] since BAT Trigger Time
TAM[0-3]:        100.00 100.00 100.00 100.00
AMPLIFIER:       1
WAVEFORM:        31
SUN_POSTN:        48.51d {+03h 14m 03s}  +17.99d {+17d 59' 29"}
SUN_DIST:        131.91 [deg]   Sun_angle= -9.9 [hr] (East of Sun)
MOON_POSTN:       65.56d {+04h 22m 15s}  +19.60d {+19d 36' 03"}
MOON_DIST:       118.77 [deg]
MOON_ILLUM:      2 [%]
GAL_COORDS:      326.19, 80.89 [deg] galactic lon,lat of the burst
ECL_COORDS:      187.61, 23.72 [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%.