[vsnet-grb 387735] GCN/SWIFT_XRT_POSITION_UPDATE

[Bacodine]

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Fri 23 Nov 18 06:02:59 UT
NOTICE_TYPE:     Swift-XRT Position UPDATE
TRIGGER_NUM:     873186,   Seg_Num: 0
GRB_RA:          184.3669d {+12h 17m 28.05s} (J2000),
                 184.6068d {+12h 18m 25.64s} (current),
                 183.7316d {+12h 14m 55.57s} (1950)
GRB_DEC:         +14.5980d {+14d 35' 52.8"} (J2000),
                 +14.4931d {+14d 29' 35.2"} (current),
                 +14.8757d {+14d 52' 32.5"} (1950)
GRB_ERROR:       2.2 [arcsec radius, statistical plus systematic, 90% containment]
GRB_INTEN:       1.00e-10 [erg/cm2/sec]
GRB_SIGNIF:      10.00 [sigma]
IMG_START_DATE:  18445 TJD;   327 DOY;   18/11/23
IMG_START_TIME:  20100.00 SOD {05:35:00.00} UT,   116.9 [sec] since BAT Trigger Time
TAM[0-3]:        100.00 100.00 100.00 100.00
AMPLIFIER:       1
WAVEFORM:        31
SUN_POSTN:       238.75d {+15h 54m 59s}  -20.33d {-20d 20' 01"}
SUN_DIST:         63.59 [deg]   Sun_angle= 3.6 [hr] (West of Sun)
MOON_POSTN:       59.73d {+03h 58m 56s}  +16.13d {+16d 07' 31"}
MOON_DIST:       117.53 [deg]
MOON_ILLUM:      100 [%]
GAL_COORDS:      268.96, 75.18 [deg] galactic lon,lat of the burst
ECL_COORDS:      178.06, 15.10 [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%.