[vsnet-grb 499] GCN/HETE_POSITION

[vxw@capella.gsfc.nasa.gov (Bacodine)]

TITLE:          GCN/HETE BURST POSITION NOTICE
NOTICE_DATE:    Thu 01 Aug 02 14:54:54 UT
NOTICE_TYPE:    HETE Ground Analysis
TRIGGER_NUM:    2177,   Seq_Num: 5
GRB_DATE:       12487 TJD;   213 DOY;   02/08/01
GRB_TIME:       46721.89 SOD {12:58:41.89} UT
TRIGGER_SOURCE: Trigger on the 25-400 keV band.
GAMMA_RATE:     153  [cnts/s]  on a 1.300 [sec] timescale
SC_-Z_RA:       303 [deg]
SC_-Z_DEC:      -19 [deg]
SC_LONG:        208 [deg East]
WXM_CNTR_RA:    314.786d {+20h 59m 09s} (J2000),
                314.832d {+20h 59m 20s} (current),
                313.891d {+20h 55m 34s} (1950)
WXM_CNTR_DEC:   -51.924d {-51d 55' 25"} (J2000),
                -51.914d {-51d 54' 49"} (current),
                -52.119d {-52d 07' 06"} (1950)
WXM_CORNER1:    310.3090 -46.0290 [deg]
WXM_CORNER2:    319.0110 -57.8800 [deg]
WXM_CORNER3:    319.2730 -57.8150 [deg]
WXM_CORNER4:    310.5520 -45.9720 [deg]
WXM_MAX_SIZE:   777.85 [arcmin] diameter
WXM_LOC_SN:     3 sig/noise (pt src in image)
WXM_IMAGE_SN:   X= 0.5 Y= 0.5 [sig/noise]
WXM_LC_SN:      X= 3.0 Y= 2.2 [sig/noise]
SUN_POSTN:      131.55d {+08h 46m 11s}  +17.98d {+17d 58' 36"}
SUN_DIST:       145.96 [deg]
MOON_POSTN:      38.79d {+02h 35m 09s}  +12.02d {+12d 01' 01"}
MOON_DIST:       95.76 [deg]
MOON_ILLUM:     49 [%]
GAL_COORDS:     346.42,-40.48 [deg] galactic lon,lat of the burst
ECL_COORDS:     301.29,-33.24 [deg] ecliptic lon,lat of the burst
COMMENTS:       Definite GRB.
COMMENTS:       Burst_Validity flag is true.
COMMENTS:       HETE GRB Coordinates.  
COMMENTS:       WXM S/N is less than a reasonable value.  
COMMENTS:       WXM data refined since S/C_Last Notice.  
COMMENTS:       Long event (~300s)  
COMMENTS:       WXM X localization is very good, but the Y localization  
COMMENTS:       is weak.  The error box here is calculated using the X  
COMMENTS:       localization and an assumption of Y localization  
COMMENTS:       limits based on the illumination pattern of the wires  
COMMENTS:       in the WXM X detector.  
COMMENTS:       The same localization is found for HETE burst 2178,  
COMMENTS:       detected ~300s after 2177.

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