TDRSS lightcurve for Trigger=899979

Notes:

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

GCN BAT Position Notice

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Mon 22 Apr 19 22:57:26 UT
NOTICE_TYPE:     Swift-BAT GRB Position
TRIGGER_NUM:     899979,   Seg_Num: 0
GRB_RA:          182.124d {+12h 08m 30s} (J2000),
                 182.379d {+12h 09m 31s} (current),
                 181.469d {+12h 05m 52s} (1950)
GRB_DEC:         -60.238d {-60d 14' 15"} (J2000),
                 -60.345d {-60d 20' 42"} (current),
                 -59.960d {-59d 57' 34"} (1950)
GRB_ERROR:       3.00 [arcmin radius, statistical only]
GRB_INTEN:       0 [cnts]    Image_Peak=3245 [image_cnts]
TRIGGER_DUR:     104.000 [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:        18595 TJD;   112 DOY;   19/04/22
GRB_TIME:        82529.21 SOD {22:55:29.21} UT
GRB_PHI:         133.03 [deg]
GRB_THETA:        15.85 [deg]
SOLN_STATUS:     0x13
RATE_SIGNIF:     0.00 [sigma]
IMAGE_SIGNIF:    10.54 [sigma]
MERIT_PARAMS:     +1  +0  +0  +7  +1  +0  +0  +1 +61  +0 
SUN_POSTN:        30.33d {+02h 01m 19s}  +12.35d {+12d 20' 52"}
SUN_DIST:        127.79 [deg]   Sun_angle= -10.1 [hr] (East of Sun)
MOON_POSTN:      256.47d {+17h 05m 52s}  -20.07d {-20d 04' 26"}
MOON_DIST:        64.81 [deg]
MOON_ILLUM:      86 [%]
GAL_COORDS:      297.62,  2.19 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:      216.13,-52.11 [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 = 260.64,0.33 [deg].  

GCN BAT Lightcurve Notice

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Mon 22 Apr 19 23:15:59 UT
NOTICE_TYPE:     Swift-BAT GRB Lightcurve
TRIGGER_NUM:     899979,   Seg_Num: 0
GRB_RA:          182.124d {+12h 08m 30s} (J2000),
                 182.379d {+12h 09m 31s} (current),
                 181.469d {+12h 05m 52s} (1950)
GRB_DEC:         -60.238d {-60d 14' 15"} (J2000),
                 -60.345d {-60d 20' 42"} (current),
                 -59.960d {-59d 57' 34"} (1950)
GRB_DATE:        18595 TJD;   112 DOY;   19/04/22
GRB_TIME:        82529.21 SOD {22:55:29.21} UT
TRIGGER_INDEX:   20000
GRB_PHI:         133.03 [deg]
GRB_THETA:        15.85 [deg]
DELTA_TIME:      0.00 [sec]
TRIGGER_DUR:     104.000 [sec] 
SOLN_STATUS:     0x13
RATE_SIGNIF:     0.00 [sigma]
IMAGE_SIGNIF:    10.54 [sigma]
LC_URL:          sw00899979000msb.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:
Mon Apr 22 19:16:23 EDT 2019