[vsnet-grb 154757] GCN/SWIFT_XRT_POSITION_UPDATE

[Bacodine]

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Mon 01 Aug 11 20:09:02 UT
NOTICE_TYPE:     Swift-XRT Position UPDATE
TRIGGER_NUM:     458521,   Seg_Num: 0
GRB_RA:           89.4375d {+05h 57m 45.00s} (J2000),
                  89.9910d {+05h 59m 57.84s} (current),
                  87.0496d {+05h 48m 11.89s} (1950)
GRB_DEC:         +80.9560d {+80d 57' 21.6"} (J2000),
                 +80.9563d {+80d 57' 22.7"} (current),
                 +80.9475d {+80d 56' 50.8"} (1950)
GRB_ERROR:       2.3 [arcsec radius, statistical plus systematic, 90% containment]
GRB_INTEN:       1.00e-10 [erg/cm2/sec]
GRB_SIGNIF:      10.00 [sigma]
IMG_START_DATE:  15774 TJD;   213 DOY;   11/08/01
IMG_START_TIME:  72054.00 SOD {20:00:54.00} UT,   671.0 [sec] since BAT Trigger Time
TAM[0-3]:        100.00 100.00 100.00 100.00
AMPLIFIER:       1
WAVEFORM:        31
SUN_POSTN:       131.67d {+08h 46m 40s}  +17.94d {+17d 56' 40"}
SUN_DIST:         65.42 [deg]   Sun_angle= 2.8 [hr] (West of Sun)
MOON_POSTN:      156.85d {+10h 27m 25s}   +4.42d {+04d 25' 00"}
MOON_DIST:        82.09 [deg]
MOON_ILLUM:      6 [%]
GAL_COORDS:      132.62, 24.70 [deg] galactic lon,lat of the burst
ECL_COORDS:       89.84, 57.52 [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%.