[vsnet-grb 436966] GCN/SWIFT_XRT_POSITION_UPDATE

[Bacodine]

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Mon 24 Feb 20 03:37:51 UT
NOTICE_TYPE:     Swift-XRT Position UPDATE
TRIGGER_NUM:     958141,   Seg_Num: 0
GRB_RA:          248.7667d {+16h 35m 04.00s} (J2000),
                 248.9320d {+16h 35m 43.67s} (current),
                 248.3568d {+16h 33m 25.62s} (1950)
GRB_DEC:         +41.6122d {+41d 36' 43.9"} (J2000),
                 +41.5717d {+41d 34' 18.2"} (current),
                 +41.7140d {+41d 42' 50.2"} (1950)
GRB_ERROR:       2.9 [arcsec radius, statistical plus systematic, 90% containment]
GRB_INTEN:       1.00e-10 [erg/cm2/sec]
GRB_SIGNIF:      10.00 [sigma]
IMG_START_DATE:  18903 TJD;    55 DOY;   20/02/24
IMG_START_TIME:  12394.00 SOD {03:26:34.00} UT,   104.7 [sec] since BAT Trigger Time
TAM[0-3]:        100.00 100.00 100.00 100.00
AMPLIFIER:       1
WAVEFORM:        31
SUN_POSTN:       336.82d {+22h 27m 18s}   -9.68d {-09d 40' 52"}
SUN_DIST:         94.84 [deg]   Sun_angle= 5.9 [hr] (West of Sun)
MOON_POSTN:      343.69d {+22h 54m 46s}  -11.87d {-11d 52' 27"}
MOON_DIST:       101.38 [deg]
MOON_ILLUM:      0 [%]
GAL_COORDS:       65.79, 42.52 [deg] galactic lon,lat of the burst
ECL_COORDS:      234.19, 62.44 [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%.