[vsnet-grb 271502] GCN/SWIFT_XRT_IMAGE

[Bacodine]

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Tue 15 Sep 15 21:21:21 UT
NOTICE_TYPE:     Swift-XRT Image
TRIGGER_NUM:     655721,   Seg_Num: 0
GRB_RA:          319.6579d {+21h 18m 37.8s} (J2000),
                 319.8985d {+21h 19m 35.6s} (current),
                 318.8901d {+21h 15m 33.6s} (1950)
GRB_DEC:         -34.9130d {-34d 54' 46.7"} (J2000),
                 -34.8462d {-34d 50' 46.4"} (current),
                 -35.1240d {-35d 07' 26.3"} (1950)
GRB_ERROR:       4.7 [arcsec, radius, statistical plus systematic]
GRB_INTEN:       157 [cnts]
IMG_START_DATE:  17280 TJD;   258 DOY;   15/09/15
IMG_START_TIME:  76833.55 SOD {21:20:33.55} UT,   128.7 [sec] since BAT Trigger Time
CENTROID_X:      213.47,  raw= 213  [pixels]
CENTROID_Y:      312.33,  raw= 312  [pixels]
ROLL:            231.85 [deg]
GAIN:            2
MODE:            3, Long Image mode
WAVEFORM:        134
EXPO_TIME:       2.50 [sec]
GRB_POS_XRT_Y:   34.25
GRB_POS_XRT_Z:   -216.46
IMAGE_URL:       sw00655721000msxps_rw.img
SUN_POSTN:       173.31d {+11h 33m 14s}   +2.89d {+02d 53' 26"}
SUN_DIST:        135.48 [deg]   Sun_angle= -9.8 [hr] (East of Sun)
MOON_POSTN:      200.17d {+13h 20m 40s}   -6.52d {-06d 31' 15"}
MOON_DIST:       109.85 [deg]
MOON_ILLUM:      6 [%]
GAL_COORDS:        9.44,-44.28 [deg] galactic lon,lat of the burst
ECL_COORDS:      311.17,-18.30 [deg] ecliptic lon,lat of the burst
COMMENTS:        SWIFT-XRT Image.  
COMMENTS:        The object found at this position is either a very bright burst or a cosmic ray hit.  
COMMENTS:        Examine the XRT Image to differentiate (CRs are much more compact); see examples at:  
COMMENTS:        http://www.swift.psu.edu/xrt/XRT_Postage_Stamp_Image_Photo_Gallery.htm .