[vsnet-grb 258206] GCN/SWIFT_XRT_IMAGE_PROCESSED

[Bacodine]

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Sat 11 Apr 15 19:39:48 UT
NOTICE_TYPE:     Swift-XRT Processed Image
TRIGGER_NUM:     637765,   Seg_Num: 0
GRB_RA:          272.1135d {+18h 08m 27.2s} (J2000),
                 272.3732d {+18h 09m 29.5s} (current),
                 271.2634d {+18h 05m 03.2s} (1950)
GRB_DEC:         -36.9774d {-36d 58' 38.6"} (J2000),
                 -36.9741d {-36d 58' 26.6"} (current),
                 -36.9856d {-36d 59' 08.1"} (1950)
GRB_ERROR:       4.7 [arcsec, radius, statistical plus systematic]
GRB_INTEN:       165 [cnts]
IMG_START_DATE:  17123 TJD;   101 DOY;   15/04/11
IMG_START_TIME:  70631.26 SOD {19:37:11.26} UT,   46.0 [sec] since BAT Trigger Time
CENTROID_X:      244.11,  raw= 244  [pixels]
CENTROID_Y:      298.41,  raw= 298  [pixels]
ROLL:            93.96 [deg]
GAIN:            2
MODE:            3, Long Image mode
WAVEFORM:        134
EXPO_TIME:       2.50 [sec]
GRB_POS_XRT_Y:   1.45
GRB_POS_XRT_Z:   -144.24
IMAGE_URL:       sw00637765000msxps_rw.img
SUN_POSTN:        19.97d {+01h 19m 52s}   +8.42d {+08d 25' 09"}
SUN_DIST:        109.08 [deg]   Sun_angle= 7.2 [hr] (West of Sun)
MOON_POSTN:      287.96d {+19h 11m 49s}  -17.12d {-17d 07' 23"}
MOON_DIST:        24.14 [deg]
MOON_ILLUM:      54 [%]
GAL_COORDS:      355.39, -8.15 [deg] galactic lon,lat of the burst
ECL_COORDS:      271.74,-13.55 [deg] ecliptic lon,lat of the burst
COMMENTS:        SWIFT-XRT Processed 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 .