[vsnet-grb 468739] GCN/SWIFT_XRT_POSITION_UPDATE

[Bacodine]

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Mon 21 Dec 20 23:18:20 UT
NOTICE_TYPE:     Swift-XRT Position UPDATE
TRIGGER_NUM:     1014037,   Seg_Num: 0
GRB_RA:          171.0586d {+11h 24m 14.06s} (J2000),
                 171.3435d {+11h 25m 22.43s} (current),
                 170.3772d {+11h 21m 30.53s} (1950)
GRB_DEC:         +42.1437d {+42d 08' 37.3"} (J2000),
                 +42.0283d {+42d 01' 41.9"} (current),
                 +42.4185d {+42d 25' 06.4"} (1950)
GRB_ERROR:       4.2 [arcsec radius, statistical plus systematic, 90% containment]
GRB_INTEN:       1.00e-10 [erg/cm2/sec]
GRB_SIGNIF:      10.00 [sigma]
IMG_START_DATE:  19204 TJD;   356 DOY;   20/12/21
IMG_START_TIME:  83298.00 SOD {23:08:18.00} UT,   103.7 [sec] since BAT Trigger Time
TAM[0-3]:        100.00 100.00 100.00 100.00
AMPLIFIER:       1
WAVEFORM:        31
SUN_POSTN:       270.62d {+18h 02m 28s}  -23.43d {-23d 26' 04"}
SUN_DIST:        112.09 [deg]   Sun_angle= 6.6 [hr] (West of Sun)
MOON_POSTN:        2.52d {+00h 10m 06s}   -4.60d {-04d 35' 48"}
MOON_DIST:       141.26 [deg]
MOON_ILLUM:      50 [%]
GAL_COORDS:      167.12, 66.73 [deg] galactic lon,lat of the burst
ECL_COORDS:      153.04, 34.74 [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%.