[vsnet-grb 203932] GCN/SWIFT_XRT_IMAGE

[Bacodine]

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Mon 27 May 13 14:24:04 UT
NOTICE_TYPE:     Swift-XRT Image
TRIGGER_NUM:     556753,   Seg_Num: 0
GRB_RA:          309.2749d {+20h 37m 05.9s} (J2000),
                 309.4731d {+20h 37m 53.5s} (current),
                 308.5342d {+20h 34m 08.2s} (1950)
GRB_DEC:         -24.7244d {-24d 43' 27.8"} (J2000),
                 -24.6771d {-24d 40' 37.4"} (current),
                 -24.8992d {-24d 53' 57.2"} (1950)
GRB_ERROR:       4.7 [arcsec, radius, statistical plus systematic]
GRB_INTEN:       82 [cnts]
IMG_START_DATE:  16439 TJD;   147 DOY;   13/05/27
IMG_START_TIME:  51795.44 SOD {14:23:15.44} UT,   105.2 [sec] since BAT Trigger Time
CENTROID_X:      316.10,  raw= 316  [pixels]
CENTROID_Y:      309.87,  raw= 310  [pixels]
ROLL:            78.91 [deg]
GAIN:            2
MODE:            3, Long Image mode
WAVEFORM:        134
EXPO_TIME:       2.50 [sec]
GRB_POS_XRT_Y:   27.99
GRB_POS_XRT_Z:   29.23
IMAGE_URL:       sw00556753000msxps_rw.img
SUN_POSTN:        64.60d {+04h 18m 24s}  +21.39d {+21d 23' 07"}
SUN_DIST:        120.76 [deg]   Sun_angle= 7.7 [hr] (West of Sun)
MOON_POSTN:      281.20d {+18h 44m 49s}  -18.87d {-18d 52' 28"}
MOON_DIST:        26.83 [deg]
MOON_ILLUM:      91 [%]
GAL_COORDS:       19.92,-33.39 [deg] galactic lon,lat of the burst
ECL_COORDS:      305.32, -5.97 [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 .