TDRSS lightcurve for Trigger=888648

Notes:

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

GCN BAT Position Notice

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Mon 11 Feb 19 16:55:20 UT
NOTICE_TYPE:     Swift-BAT GRB Position
TRIGGER_NUM:     888648,   Seg_Num: 0
GRB_RA:          196.675d {+13h 06m 42s} (J2000),
                 196.893d {+13h 07m 34s} (current),
                 196.106d {+13h 04m 25s} (1950)
GRB_DEC:         +41.966d {+41d 57' 58"} (J2000),
                 +41.864d {+41d 51' 51"} (current),
                 +42.233d {+42d 13' 59"} (1950)
GRB_ERROR:       3.00 [arcmin radius, statistical only]
GRB_INTEN:       4526 [cnts]    Image_Peak=132 [image_cnts]
TRIGGER_DUR:     2.048 [sec] 
TRIGGER_INDEX:   473     E_range: 25-100 keV
BKG_INTEN:       45997 [cnts]
BKG_TIME:        60849.59 SOD {16:54:09.59} UT
BKG_DUR:         24 [sec]
GRB_DATE:        18525 TJD;    42 DOY;   19/02/11
GRB_TIME:        60884.73 SOD {16:54:44.73} UT
GRB_PHI:         -132.25 [deg]
GRB_THETA:        42.07 [deg]
SOLN_STATUS:     0x83
RATE_SIGNIF:     9.16 [sigma]
IMAGE_SIGNIF:    6.93 [sigma]
MERIT_PARAMS:     +1  +0  +0  +1  +2  -3  +0  +0 +61  +0 
SUN_POSTN:       325.02d {+21h 40m 05s}  -13.96d {-13d 57' 21"}
SUN_DIST:        127.39 [deg]   Sun_angle= 8.5 [hr] (West of Sun)
MOON_POSTN:       37.38d {+02h 29m 30s}   +9.31d {+09d 18' 50"}
MOON_DIST:       125.48 [deg]
MOON_ILLUM:      37 [%]
GAL_COORDS:      112.03, 74.84 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:      174.37, 44.30 [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:        Since the IMAGE_SIGNIF is less than 7 sigma, this is a questionable detection.  
COMMENTS:        This trigger occurred at longitude,latitude = 92.91,-20.27 [deg].  

GCN BAT Lightcurve Notice

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Mon 11 Feb 19 17:13:32 UT
NOTICE_TYPE:     Swift-BAT GRB Lightcurve
TRIGGER_NUM:     888648,   Seg_Num: 0
GRB_RA:          196.675d {+13h 06m 42s} (J2000),
                 196.893d {+13h 07m 34s} (current),
                 196.106d {+13h 04m 25s} (1950)
GRB_DEC:         +41.966d {+41d 57' 58"} (J2000),
                 +41.864d {+41d 51' 51"} (current),
                 +42.233d {+42d 13' 59"} (1950)
GRB_DATE:        18525 TJD;    42 DOY;   19/02/11
GRB_TIME:        60884.73 SOD {16:54:44.73} UT
TRIGGER_INDEX:   473
GRB_PHI:         -132.25 [deg]
GRB_THETA:        42.07 [deg]
DELTA_TIME:      6.00 [sec]
TRIGGER_DUR:     2.048 [sec] 
SOLN_STATUS:     0x83
RATE_SIGNIF:     9.16 [sigma]
IMAGE_SIGNIF:    6.93 [sigma]
LC_URL:          sw00888648000msb.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 Feb 11 12:14:02 EST 2019