TDRSS lightcurve for Trigger=946256

Notes:

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

GCN BAT Position Notice

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Thu 26 Dec 19 05:54:20 UT
NOTICE_TYPE:     Swift-BAT GRB Position
TRIGGER_NUM:     946256,   Seg_Num: 0
GRB_RA:          135.862d {+09h 03m 27s} (J2000),
                 136.052d {+09h 04m 12s} (current),
                 135.386d {+09h 01m 33s} (1950)
GRB_DEC:         -40.297d {-40d 17' 49"} (J2000),
                 -40.377d {-40d 22' 37"} (current),
                 -40.098d {-40d 05' 53"} (1950)
GRB_ERROR:       3.00 [arcmin radius, statistical only]
GRB_INTEN:       0 [cnts]    Image_Peak=961 [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:        18843 TJD;   360 DOY;   19/12/26
GRB_TIME:        21183.84 SOD {05:53:03.84} UT
GRB_PHI:          97.99 [deg]
GRB_THETA:        38.91 [deg]
SOLN_STATUS:     0x413
RATE_SIGNIF:     0.00 [sigma]
IMAGE_SIGNIF:    8.37 [sigma]
MERIT_PARAMS:     +1  +0  +0  +6  +1  -1  +0  +1 +26  +0 
SUN_POSTN:       274.52d {+18h 18m 05s}  -23.37d {-23d 22' 14"}
SUN_DIST:        105.46 [deg]   Sun_angle= 9.2 [hr] (West of Sun)
MOON_POSTN:      274.85d {+18h 19m 25s}  -23.11d {-23d 06' 35"}
MOON_DIST:       105.84 [deg]
MOON_ILLUM:      0 [%]
GAL_COORDS:      263.03,  4.29 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:      157.20,-53.58 [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 = 335.48,-1.98 [deg].  
COMMENTS:           
COMMENTS:        This trigger occured while the StarTracker had lost lock, so it is possibly bogus.  

GCN BAT Lightcurve Notice

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Thu 26 Dec 19 05:57:08 UT
NOTICE_TYPE:     Swift-BAT GRB Lightcurve
TRIGGER_NUM:     946256,   Seg_Num: 0
GRB_RA:          135.862d {+09h 03m 27s} (J2000),
                 136.052d {+09h 04m 12s} (current),
                 135.386d {+09h 01m 33s} (1950)
GRB_DEC:         -40.297d {-40d 17' 49"} (J2000),
                 -40.377d {-40d 22' 37"} (current),
                 -40.098d {-40d 05' 53"} (1950)
GRB_DATE:        18843 TJD;   360 DOY;   19/12/26
GRB_TIME:        21183.84 SOD {05:53:03.84} UT
TRIGGER_INDEX:   20000
GRB_PHI:          97.99 [deg]
GRB_THETA:        38.91 [deg]
DELTA_TIME:      0.00 [sec]
TRIGGER_DUR:     64.000 [sec] 
SOLN_STATUS:     0x413
RATE_SIGNIF:     0.00 [sigma]
IMAGE_SIGNIF:    8.37 [sigma]
LC_URL:          sw00946256000msb.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

Plot creation:
Thu Dec 26 00:58:22 EST 2019