[vsnet-grb 438980] GCN/SWIFT_XRT_POSITION_UPDATE

[Bacodine]

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Thu 12 Mar 20 21:35:13 UT
NOTICE_TYPE:     Swift-XRT Position UPDATE
TRIGGER_NUM:     960986,   Seg_Num: 0
GRB_RA:          274.5006d {+18h 18m 00.14s} (J2000),
                 274.7918d {+18h 19m 10.02s} (current),
                 273.7797d {+18h 15m 07.13s} (1950)
GRB_DEC:         -16.1312d {-16d 07' 52.3"} (J2000),
                 -16.1221d {-16d 07' 19.5"} (current),
                 -16.1513d {-16d 09' 04.6"} (1950)
GRB_ERROR:       2.6 [arcsec radius, statistical plus systematic, 90% containment]
GRB_INTEN:       1.00e-10 [erg/cm2/sec]
GRB_SIGNIF:      10.00 [sigma]
IMG_START_DATE:  18920 TJD;    72 DOY;   20/03/12
IMG_START_TIME:  76683.00 SOD {21:18:03.00} UT,   75.9 [sec] since BAT Trigger Time
TAM[0-3]:        100.00 100.00 100.00 100.00
AMPLIFIER:       1
WAVEFORM:        31
SUN_POSTN:       353.36d {+23h 33m 27s}   -2.87d {-02d 52' 01"}
SUN_DIST:         78.23 [deg]   Sun_angle= 5.2 [hr] (West of Sun)
MOON_POSTN:      216.45d {+14h 25m 49s}   -9.91d {-09d 54' 31"}
MOON_DIST:        57.01 [deg]
MOON_ILLUM:      86 [%]
GAL_COORDS:       14.82, -0.14 [deg] galactic lon,lat of the burst
ECL_COORDS:      274.36,  7.24 [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 1.1% < P(seren) < 2.8%.