TDRSS lightcurve for Trigger=684679

Notes:

• 1) None of the TDRSS light curves are background subtracted.

GCN BAT Position Notice

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Sun 01 May 16 00:41:54 UT
NOTICE_TYPE:     Swift-BAT GRB Position
TRIGGER_NUM:     684679,   Seg_Num: 0
GRB_RA:          286.377d {+19h 05m 30s} (J2000),
                286.613d {+19h 06m 27s} (current),
                285.653d {+19h 02m 37s} (1950)
GRB_DEC:         -17.240d {-17d 14' 22"} (J2000),
                -17.214d {-17d 12' 49"} (current),
                -17.317d {-17d 18' 59"} (1950)
GRB_ERROR:       3.00 [arcmin radius, statistical only]
GRB_INTEN:       0 [cnts]    Image_Peak=2312 [image_cnts]
TRIGGER_DUR:     64.000 [sec] 
TRIGGER_INDEX:   20000     E_range: 15-50 keV
BKG_INTEN:       0 [cnts]
BKG_TIME:        0.00 SOD {00:00:00.00} UT
BKG_DUR:         0 [sec]
GRB_DATE:        17509 TJD;   122 DOY;   16/05/01
GRB_TIME:        2431.79 SOD {00:40:31.79} UT
GRB_PHI:         -118.41 [deg]
GRB_THETA:        19.54 [deg]
SOLN_STATUS:     0x13
RATE_SIGNIF:     0.00 [sigma]
IMAGE_SIGNIF:    11.34 [sigma]
MERIT_PARAMS:     +1  +0  +0  +6  +1  +1  +0  +0 +42  +0 
SUN_POSTN:        38.66d {+02h 34m 38s}  +15.15d {+15d 09' 08"}
SUN_DIST:        115.05 [deg]   Sun_angle= 7.5 [hr] (West of Sun)
MOON_POSTN:      323.58d {+21h 34m 19s}  -11.97d {-11d 58' 00"}
MOON_DIST:        36.10 [deg]
MOON_ILLUM:      41 [%]
GAL_COORDS:       18.97,-10.79 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:      285.69,  5.31 [deg] ecliptic lon,lat of the burst (or transient)
COMMENTS:        SWIFT-BAT GRB Coordinates.  
COMMENTS:        This is an image trigger.  (The RATE_SIGNIF & BKG_{INTEN, TIME, DUR} are undefined.)  
COMMENTS:        A point_source was found.  
COMMENTS:        This does not match any source in the on-board catalog.  
COMMENTS:        This does not match any source in the ground catalog.  
COMMENTS:        This is a GRB.  
COMMENTS:        This trigger occurred at longitude,latitude = 358.11,20.56 [deg].  

GCN BAT Lightcurve Notice

   TITLE:           GCN/SWIFT NOTICE
   NOTICE_DATE:     Sun 01 May 16 00:44:26 UT
   NOTICE_TYPE:     Swift-BAT GRB Lightcurve
   TRIGGER_NUM:     684679,   Seg_Num: 0
   GRB_RA:          286.377d {+19h 05m 30s} (J2000),
                   286.613d {+19h 06m 27s} (current),
                   285.653d {+19h 02m 37s} (1950)
   GRB_DEC:         -17.240d {-17d 14' 22"} (J2000),
                   -17.214d {-17d 12' 49"} (current),
                   -17.317d {-17d 18' 59"} (1950)
   GRB_DATE:        17509 TJD;   122 DOY;   16/05/01
   GRB_TIME:        2431.79 SOD {00:40:31.79} UT
   TRIGGER_INDEX:   20000
   GRB_PHI:         -118.41 [deg]
   GRB_THETA:        19.54 [deg]
   DELTA_TIME:      0.00 [sec]
   TRIGGER_DUR:     64.000 [sec]
   SOLN_STATUS:     0x13
   RATE_SIGNIF:     0.00 [sigma]
   IMAGE_SIGNIF:    11.34 [sigma]
   LC_URL:          sw00684679000msb.lc

Initial TDRSS lightcurve and spacecraft attitude plot

TDRSS lightcurve from T0-30 to T0+50 (zoom in)

TDRSS light curve from T0-1 to T0+2 (More zoom in)

1.6s binned TDRSS light curve

Plot creation:
Wed Sep 13 17:27:47 EDT 2017