[vsnet-grb 430990] GCN/SWIFT_XRT_POSITION_UPDATE

[Bacodine]

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Sat 28 Dec 19 00:19:05 UT
NOTICE_TYPE:     Swift-XRT Position UPDATE
TRIGGER_NUM:     946476,   Seg_Num: 0
GRB_RA:            5.3467d {+00h 21m 23.20s} (J2000),
                   5.6012d {+00h 22m 24.28s} (current),
                   4.7100d {+00h 18m 50.39s} (1950)
GRB_DEC:          -8.6826d {-08d 40' 57.3"} (J2000),
                  -8.5718d {-08d 34' 18.5"} (current),
                  -8.9599d {-08d 57' 35.7"} (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:  18845 TJD;   362 DOY;   19/12/28
IMG_START_TIME:  425.00 SOD {00:07:05.00} UT,   345.2 [sec] since BAT Trigger Time
TAM[0-3]:        100.00 100.00 100.00 100.00
AMPLIFIER:       1
WAVEFORM:        31
SUN_POSTN:       276.48d {+18h 25m 55s}  -23.30d {-23d 18' 07"}
SUN_DIST:         85.82 [deg]   Sun_angle= -5.9 [hr] (East of Sun)
MOON_POSTN:      299.78d {+19h 59m 07s}  -22.47d {-22d 28' 21"}
MOON_DIST:        64.46 [deg]
MOON_ILLUM:      3 [%]
GAL_COORDS:      100.46,-70.23 [deg] galactic lon,lat of the burst
ECL_COORDS:        1.42,-10.09 [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%.