[vsnet-grb 310998] GCN/SWIFT_XRT_POSITION_UPDATE

[Bacodine]

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Mon 19 Dec 16 19:01:36 UT
NOTICE_TYPE:     Swift-XRT Position UPDATE
TRIGGER_NUM:     727541,   Seg_Num: 0
GRB_RA:           91.7139d {+06h 06m 51.33s} (J2000),
                  91.8836d {+06h 07m 32.06s} (current),
                  91.2139d {+06h 04m 51.33s} (1950)
GRB_DEC:         -26.7914d {-26d 47' 29.0"} (J2000),
                 -26.7944d {-26d 47' 39.7"} (current),
                 -26.7843d {-26d 47' 03.4"} (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:  17741 TJD;   354 DOY;   16/12/19
IMG_START_TIME:  67869.00 SOD {18:51:09.00} UT,   149.7 [sec] since BAT Trigger Time
TAM[0-3]:        100.00 100.00 100.00 100.00
AMPLIFIER:       1
WAVEFORM:        31
SUN_POSTN:       268.17d {+17h 52m 40s}  -23.43d {-23d 25' 32"}
SUN_DIST:        129.65 [deg]   Sun_angle= 11.8 [hr] (West of Sun)
MOON_POSTN:      165.09d {+11h 00m 21s}   +7.03d {+07d 02' 05"}
MOON_DIST:        78.42 [deg]
MOON_ILLUM:      63 [%]
GAL_COORDS:      233.15,-21.04 [deg] galactic lon,lat of the burst
ECL_COORDS:       92.39,-50.22 [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%.