[vsnet-grb 404580] GCN/SWIFT_XRT_POSITION_UPDATE

[Bacodine]

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Mon 22 Apr 19 23:15:41 UT
NOTICE_TYPE:     Swift-XRT Position UPDATE
TRIGGER_NUM:     899979,   Seg_Num: 0
GRB_RA:          182.0355d {+12h 08m 08.52s} (J2000),
                 182.2900d {+12h 09m 09.59s} (current),
                 181.3806d {+12h 05m 31.33s} (1950)
GRB_DEC:         -60.2248d {-60d 13' 29.2"} (J2000),
                 -60.3322d {-60d 19' 55.9"} (current),
                 -59.9465d {-59d 56' 47.4"} (1950)
GRB_ERROR:       2.4 [arcsec radius, statistical plus systematic, 90% containment]
GRB_INTEN:       1.00e-10 [erg/cm2/sec]
GRB_SIGNIF:      10.00 [sigma]
IMG_START_DATE:  18595 TJD;   112 DOY;   19/04/22
IMG_START_TIME:  83065.00 SOD {23:04:25.00} UT,   535.8 [sec] since BAT Trigger Time
TAM[0-3]:        100.00 100.00 100.00 100.00
AMPLIFIER:       1
WAVEFORM:        31
SUN_POSTN:        30.34d {+02h 01m 22s}  +12.35d {+12d 21' 08"}
SUN_DIST:        127.78 [deg]   Sun_angle= -10.1 [hr] (East of Sun)
MOON_POSTN:      256.64d {+17h 06m 34s}  -20.10d {-20d 06' 04"}
MOON_DIST:        64.91 [deg]
MOON_ILLUM:      86 [%]
GAL_COORDS:      297.58,  2.20 [deg] galactic lon,lat of the burst
ECL_COORDS:      216.07,-52.12 [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%.