[vsnet-grb 478378] GCN/SWIFT_XRT_POSITION_UPDATE

[Bacodine]

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Sun 21 Mar 21 08:24:06 UT
NOTICE_TYPE:     Swift-XRT Position UPDATE
TRIGGER_NUM:     1037828,   Seg_Num: 0
GRB_RA:           87.8959d {+05h 51m 35.01s} (J2000),
                  88.4945d {+05h 53m 58.67s} (current),
                  86.4862d {+05h 45m 56.69s} (1950)
GRB_DEC:         +70.1304d {+70d 07' 49.4"} (J2000),
                 +70.1341d {+70d 08' 02.8"} (current),
                 +70.1168d {+70d 07' 00.3"} (1950)
GRB_ERROR:       3.7 [arcsec radius, statistical plus systematic, 90% containment]
GRB_INTEN:       1.00e-10 [erg/cm2/sec]
GRB_SIGNIF:      10.00 [sigma]
IMG_START_DATE:  19294 TJD;    80 DOY;   21/03/21
IMG_START_TIME:  28887.00 SOD {08:01:27.00} UT,   2856.0 [sec] since BAT Trigger Time
TAM[0-3]:        100.00 100.00 100.00 100.00
AMPLIFIER:       1
WAVEFORM:        31
SUN_POSTN:         0.87d {+00h 03m 28s}   +0.38d {+00d 22' 34"}
SUN_DIST:         88.84 [deg]   Sun_angle= -5.8 [hr] (East of Sun)
MOON_POSTN:       87.71d {+05h 50m 51s}  +24.72d {+24d 43' 12"}
MOON_DIST:        45.42 [deg]
MOON_ILLUM:      48 [%]
GAL_COORDS:      143.46, 20.53 [deg] galactic lon,lat of the burst
ECL_COORDS:       88.96, 46.70 [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:        The probability that this is a serendipitous source in the  
COMMENTS:        SPER window is 0.58% < P(seren) < 1.1%.