[vsnet-grb 389947] GCN/SWIFT_XRT_POSITION_UPDATE

[Bacodine]

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Thu 13 Dec 18 14:17:17 UT
NOTICE_TYPE:     Swift-XRT Position UPDATE
TRIGGER_NUM:     876016,   Seg_Num: 0
GRB_RA:          248.2711d {+16h 33m 05.06s} (J2000),
                 248.0336d {+16h 32m 08.05s} (current),
                 248.9100d {+16h 35m 38.41s} (1950)
GRB_DEC:         +78.4975d {+78d 29' 51.0"} (J2000),
                 +78.4582d {+78d 27' 29.6"} (current),
                 +78.5991d {+78d 35' 56.9"} (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:  18465 TJD;   347 DOY;   18/12/13
IMG_START_TIME:  49120.00 SOD {13:38:40.00} UT,   2461.6 [sec] since BAT Trigger Time
TAM[0-3]:        100.00 100.00 100.00 100.00
AMPLIFIER:       1
WAVEFORM:        31
SUN_POSTN:       260.77d {+17h 23m 05s}  -23.16d {-23d 09' 53"}
SUN_DIST:        101.89 [deg]   Sun_angle= 0.8 [hr] (West of Sun)
MOON_POSTN:      333.94d {+22h 15m 45s}  -13.94d {-13d 56' 28"}
MOON_DIST:       102.84 [deg]
MOON_ILLUM:      32 [%]
GAL_COORDS:      111.62, 33.20 [deg] galactic lon,lat of the burst
ECL_COORDS:      108.56, 76.59 [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 1.1% < P(seren) < 2.8%.