[vsnet-grb 496892] GCN/SWIFT_XRT_POSITION_UPDATE

Bacodine vxw at capella2.gsfc.nasa.gov
Wed Aug 25 16:08:34 JST 2021


TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Wed 25 Aug 21 07:08:34 UT
NOTICE_TYPE:     Swift-XRT Position UPDATE
TRIGGER_NUM:     1070298,   Seg_Num: 0
GRB_RA:          238.7858d {+15h 55m 08.59s} (J2000),
                 239.2058d {+15h 56m 49.40s} (current),
                 237.8194d {+15h 51m 16.65s} (1950)
GRB_DEC:         -54.0617d {-54d 03' 42.1"} (J2000),
                 -54.1238d {-54d 07' 25.6"} (current),
                 -53.9154d {-53d 54' 55.4"} (1950)
GRB_ERROR:       1.9 [arcsec radius, statistical plus systematic, 90% containment]
GRB_INTEN:       1.00e-10 [erg/cm2/sec]
GRB_SIGNIF:      10.00 [sigma]
IMG_START_DATE:  19451 TJD;   237 DOY;   21/08/25
IMG_START_TIME:  24904.00 SOD {06:55:04.00} UT,   96.7 [sec] since BAT Trigger Time
TAM[0-3]:        100.00 100.00 100.00 100.00
AMPLIFIER:       1
WAVEFORM:        31
SUN_POSTN:       154.30d {+10h 17m 11s}  +10.65d {+10d 38' 53"}
SUN_DIST:         95.66 [deg]   Sun_angle= -5.7 [hr] (East of Sun)
MOON_POSTN:        7.66d {+00h 30m 39s}   -1.36d {-01d 21' 26"}
MOON_DIST:       110.19 [deg]
MOON_ILLUM:      91 [%]
GAL_COORDS:      327.87, -0.34 [deg] galactic lon,lat of the burst
ECL_COORDS:      248.76,-32.90 [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%.  



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