[vsnet-grb 475443] GCN/SWIFT_XRT_POSITION_UPDATE

[Bacodine]

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Mon 22 Feb 21 22:51:29 UT
NOTICE_TYPE:     Swift-XRT Position UPDATE
TRIGGER_NUM:     1034325,   Seg_Num: 0
GRB_RA:          154.6062d {+10h 18m 25.48s} (J2000),
                 154.8637d {+10h 19m 27.28s} (current),
                 153.9976d {+10h 15m 59.42s} (1950)
GRB_DEC:         -14.9315d {-14d 55' 53.3"} (J2000),
                 -15.0380d {-15d 02' 16.6"} (current),
                 -14.6806d {-14d 40' 50.2"} (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:  19267 TJD;    53 DOY;   21/02/22
IMG_START_TIME:  81558.00 SOD {22:39:18.00} UT,   111.7 [sec] since BAT Trigger Time
TAM[0-3]:        100.00 100.00 100.00 100.00
AMPLIFIER:       1
WAVEFORM:        31
SUN_POSTN:       336.40d {+22h 25m 37s}   -9.84d {-09d 50' 35"}
SUN_DIST:        155.07 [deg]   Sun_angle= -11.9 [hr] (East of Sun)
MOON_POSTN:      100.86d {+06h 43m 25s}  +25.03d {+25d 01' 56"}
MOON_DIST:        66.14 [deg]
MOON_ILLUM:      79 [%]
GAL_COORDS:      256.81, 33.90 [deg] galactic lon,lat of the burst
ECL_COORDS:      162.35,-23.65 [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%.