TDRSS lightcurve for Trigger=866757

Notes:

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

GCN BAT Position Notice

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Fri 12 Oct 18 19:06:58 UT
NOTICE_TYPE:     Swift-BAT GRB Position
TRIGGER_NUM:     866757,   Seg_Num: 0
GRB_RA:          264.743d {+17h 38m 58s} (J2000),
                 265.006d {+17h 40m 02s} (current),
                 264.041d {+17h 36m 10s} (1950)
GRB_DEC:         -12.473d {-12d 28' 22"} (J2000),
                 -12.482d {-12d 28' 56"} (current),
                 -12.446d {-12d 26' 44"} (1950)
GRB_ERROR:       3.00 [arcmin radius, statistical only]
GRB_INTEN:       14441 [cnts]    Image_Peak=300 [image_cnts]
TRIGGER_DUR:     1.024 [sec] 
TRIGGER_INDEX:   155     E_range: 50-350 keV
BKG_INTEN:       90792 [cnts]
BKG_TIME:        68770.25 SOD {19:06:10.25} UT
BKG_DUR:         8 [sec]
GRB_DATE:        18403 TJD;   285 DOY;   18/10/12
GRB_TIME:        68788.56 SOD {19:06:28.56} UT
GRB_PHI:           4.64 [deg]
GRB_THETA:        28.94 [deg]
SOLN_STATUS:     0xC3
RATE_SIGNIF:     24.53 [sigma]
IMAGE_SIGNIF:    6.53 [sigma]
MERIT_PARAMS:     +1  +0  +0  +0  +3  -4  -5  +1 -40  +0 
SUN_POSTN:       197.91d {+13h 11m 39s}   -7.59d {-07d 35' 37"}
SUN_DIST:         66.09 [deg]   Sun_angle= -4.5 [hr] (East of Sun)
MOON_POSTN:      243.86d {+16h 15m 26s}  -17.00d {-16d 59' 45"}
MOON_DIST:        20.93 [deg]
MOON_ILLUM:      15 [%]
GAL_COORDS:       13.32,  9.89 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:      264.77, 10.87 [deg] ecliptic lon,lat of the burst (or transient)
COMMENTS:        SWIFT-BAT GRB Coordinates.  
COMMENTS:        This is a rate trigger.  
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 during a high background rate interval.  
COMMENTS:        Since the IMAGE_SIGNIF is less than 7 sigma, this is a questionable detection.  
COMMENTS:        This trigger occurred at longitude,latitude = 275.71,-14.64 [deg].  

GCN BAT Lightcurve Notice

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Fri 12 Oct 18 19:12:46 UT
NOTICE_TYPE:     Swift-BAT GRB Lightcurve
TRIGGER_NUM:     866757,   Seg_Num: 0
GRB_RA:          264.743d {+17h 38m 58s} (J2000),
                 265.006d {+17h 40m 02s} (current),
                 264.041d {+17h 36m 10s} (1950)
GRB_DEC:         -12.473d {-12d 28' 22"} (J2000),
                 -12.482d {-12d 28' 56"} (current),
                 -12.446d {-12d 26' 44"} (1950)
GRB_DATE:        18403 TJD;   285 DOY;   18/10/12
GRB_TIME:        68788.56 SOD {19:06:28.56} UT
TRIGGER_INDEX:   155
GRB_PHI:           4.64 [deg]
GRB_THETA:        28.94 [deg]
DELTA_TIME:      -70.00 [sec]
TRIGGER_DUR:     1.024 [sec] 
SOLN_STATUS:     0xC3
RATE_SIGNIF:     24.53 [sigma]
IMAGE_SIGNIF:    6.53 [sigma]
LC_URL:          sw00866757000msb.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

Extended TDRSS light curve and spacecraft attitude plot(s)

Extended TDRSS lc No.1

Extended TDRSS lc No.2

Plot creation:
Fri Oct 12 15:13:02 EDT 2018