TDRSS lightcurve for Trigger=889443

Notes:

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

GCN BAT Position Notice

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Sun 17 Feb 19 23:35:20 UT
NOTICE_TYPE:     Swift-BAT GRB Position
TRIGGER_NUM:     889443,   Seg_Num: 0
GRB_RA:          299.812d {+19h 59m 15s} (J2000),
                 299.992d {+19h 59m 58s} (current),
                 299.341d {+19h 57m 22s} (1950)
GRB_DEC:         +35.084d {+35d 05' 03"} (J2000),
                 +35.137d {+35d 08' 15"} (current),
                 +34.947d {+34d 56' 49"} (1950)
GRB_ERROR:       3.00 [arcmin radius, statistical only]
GRB_INTEN:       0 [cnts]    Image_Peak=1213 [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:        18531 TJD;    48 DOY;   19/02/17
GRB_TIME:        84841.56 SOD {23:34:01.56} UT
GRB_PHI:          -5.97 [deg]
GRB_THETA:         9.08 [deg]
SOLN_STATUS:     0x513
RATE_SIGNIF:     0.00 [sigma]
IMAGE_SIGNIF:    8.19 [sigma]
MERIT_PARAMS:     +1  +0  +0  +6  +1  -1  +0  +1 -56  +0 
SUN_POSTN:       331.15d {+22h 04m 35s}  -11.82d {-11d 48' 55"}
SUN_DIST:         55.45 [deg]   Sun_angle= 2.1 [hr] (West of Sun)
MOON_POSTN:      128.04d {+08h 32m 09s}  +19.79d {+19d 47' 19"}
MOON_DIST:       124.55 [deg]
MOON_ILLUM:      96 [%]
GAL_COORDS:       71.33,  2.85 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:      313.90, 54.07 [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 matches a source in the ground catalog: Cyg X-1,   delta=0.216 [deg].  
COMMENTS:        This is not a GRB.  
COMMENTS:        This trigger occurred at longitude,latitude = 181.59,13.28 [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:     Sun 17 Feb 19 23:52:00 UT
NOTICE_TYPE:     Swift-BAT GRB Lightcurve
TRIGGER_NUM:     889443,   Seg_Num: 0
GRB_RA:          299.812d {+19h 59m 15s} (J2000),
                 299.992d {+19h 59m 58s} (current),
                 299.341d {+19h 57m 22s} (1950)
GRB_DEC:         +35.084d {+35d 05' 03"} (J2000),
                 +35.137d {+35d 08' 15"} (current),
                 +34.947d {+34d 56' 49"} (1950)
GRB_DATE:        18531 TJD;    48 DOY;   19/02/17
GRB_TIME:        84841.56 SOD {23:34:01.56} UT
TRIGGER_INDEX:   20000
GRB_PHI:          -5.97 [deg]
GRB_THETA:         9.08 [deg]
DELTA_TIME:      0.00 [sec]
TRIGGER_DUR:     64.000 [sec] 
SOLN_STATUS:     0x513
RATE_SIGNIF:     0.00 [sigma]
IMAGE_SIGNIF:    8.19 [sigma]
LC_URL:          sw00889443000msb.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:
Sun Feb 17 18:52:22 EST 2019