[vsnet-grb 443680] GCN/SWIFT_XRT_POSITION_UPDATE

[Bacodine]

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Sat 25 Apr 20 00:38:36 UT
NOTICE_TYPE:     Swift-XRT Position UPDATE
TRIGGER_NUM:     967774,   Seg_Num: 0
GRB_RA:           85.2198d {+05h 40m 52.75s} (J2000),
                  85.4532d {+05h 41m 48.75s} (current),
                  84.6456d {+05h 38m 34.94s} (1950)
GRB_DEC:         -13.4352d {-13d 26' 06.7"} (J2000),
                 -13.4260d {-13d 25' 33.6"} (current),
                 -13.4598d {-13d 27' 35.2"} (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:  18964 TJD;   116 DOY;   20/04/25
IMG_START_TIME:  1222.00 SOD {00:20:22.00} UT,   240.2 [sec] since BAT Trigger Time
TAM[0-3]:        100.00 100.00 100.00 100.00
AMPLIFIER:       1
WAVEFORM:        31
SUN_POSTN:        32.99d {+02h 11m 58s}  +13.28d {+13d 16' 51"}
SUN_DIST:         58.44 [deg]   Sun_angle= -3.5 [hr] (East of Sun)
MOON_POSTN:       55.03d {+03h 40m 07s}  +16.62d {+16d 37' 25"}
MOON_DIST:        42.50 [deg]
MOON_ILLUM:      3 [%]
GAL_COORDS:      217.40,-21.61 [deg] galactic lon,lat of the burst
ECL_COORDS:       84.19,-36.78 [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%.