TDRSS lightcurve for Trigger=946476

Notes:

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

GCN BAT Position Notice

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Sat 28 Dec 19 00:02:48 UT
NOTICE_TYPE:     Swift-BAT GRB Position
TRIGGER_NUM:     946476,   Seg_Num: 0
GRB_RA:            5.339d {+00h 21m 21s} (J2000),
                   5.594d {+00h 22m 22s} (current),
                   4.702d {+00h 18m 49s} (1950)
GRB_DEC:          -8.670d {-08d 40' 12"} (J2000),
                  -8.560d {-08d 33' 33"} (current),
                  -8.948d {-08d 56' 50"} (1950)
GRB_ERROR:       3.00 [arcmin radius, statistical only]
GRB_INTEN:       0 [cnts]    Image_Peak=2655 [image_cnts]
TRIGGER_DUR:     72.000 [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:        18845 TJD;   362 DOY;   19/12/28
GRB_TIME:        79.83 SOD {00:01:19.83} UT
GRB_PHI:          76.52 [deg]
GRB_THETA:        11.30 [deg]
SOLN_STATUS:     0x13
RATE_SIGNIF:     0.00 [sigma]
IMAGE_SIGNIF:    12.82 [sigma]
MERIT_PARAMS:     +1  +0  +0  +6  +1  +2  +0  +0  -7  +0 
SUN_POSTN:       276.47d {+18h 25m 52s}  -23.30d {-23d 18' 09"}
SUN_DIST:         85.83 [deg]   Sun_angle= -5.9 [hr] (East of Sun)
MOON_POSTN:      299.62d {+19h 58m 30s}  -22.49d {-22d 29' 19"}
MOON_DIST:        64.60 [deg]
MOON_ILLUM:      3 [%]
GAL_COORDS:      100.46,-70.22 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:        1.42,-10.07 [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 = 222.50,4.53 [deg].  

GCN BAT Lightcurve Notice

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Sat 28 Dec 19 00:20:53 UT
NOTICE_TYPE:     Swift-BAT GRB Lightcurve
TRIGGER_NUM:     946476,   Seg_Num: 0
GRB_RA:            5.339d {+00h 21m 21s} (J2000),
                   5.594d {+00h 22m 22s} (current),
                   4.702d {+00h 18m 49s} (1950)
GRB_DEC:          -8.670d {-08d 40' 12"} (J2000),
                  -8.560d {-08d 33' 33"} (current),
                  -8.948d {-08d 56' 50"} (1950)
GRB_DATE:        18845 TJD;   362 DOY;   19/12/28
GRB_TIME:        79.83 SOD {00:01:19.83} UT
TRIGGER_INDEX:   20000
GRB_PHI:          76.52 [deg]
GRB_THETA:        11.30 [deg]
DELTA_TIME:      0.00 [sec]
TRIGGER_DUR:     72.000 [sec] 
SOLN_STATUS:     0x13
RATE_SIGNIF:     0.00 [sigma]
IMAGE_SIGNIF:    12.82 [sigma]
LC_URL:          sw00946476000msb.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

Extended TDRSS lc No.3

Extended TDRSS lc No.4

Plot creation:
Fri Dec 27 19:21:22 EST 2019