[vsnet-grb 397526] GCN/SWIFT_XRT_POSITION_UPDATE

[Bacodine]

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Wed 20 Feb 19 03:14:51 UT
NOTICE_TYPE:     Swift-XRT Position UPDATE
TRIGGER_NUM:     889785,   Seg_Num: 0
GRB_RA:          330.1598d {+22h 00m 38.35s} (J2000),
                 330.6265d {+22h 02m 30.36s} (current),
                 328.9176d {+21h 55m 40.22s} (1950)
GRB_DEC:         -76.6816d {-76d 40' 53.7"} (J2000),
                 -76.5890d {-76d 35' 20.2"} (current),
                 -76.9216d {-76d 55' 17.7"} (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:  18534 TJD;    51 DOY;   19/02/20
IMG_START_TIME:  10930.00 SOD {03:02:10.00} UT,   155.3 [sec] since BAT Trigger Time
TAM[0-3]:        100.00 100.00 100.00 100.00
AMPLIFIER:       1
WAVEFORM:        31
SUN_POSTN:       333.22d {+22h 12m 53s}  -11.05d {-11d 03' 05"}
SUN_DIST:         65.55 [deg]   Sun_angle= 0.2 [hr] (West of Sun)
MOON_POSTN:      161.04d {+10h 44m 11s}  +11.72d {+11d 43' 20"}
MOON_DIST:       114.90 [deg]
MOON_ILLUM:      100 [%]
GAL_COORDS:      314.13,-36.47 [deg] galactic lon,lat of the burst
ECL_COORDS:      292.09,-57.91 [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 0.11% < P(seren) < 0.58%.