TDRSS lightcurve for Trigger=889483

Notes:

GCN BAT Position Notice

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Mon 18 Feb 19 08:59:55 UT
NOTICE_TYPE:     Swift-BAT GRB Position
TRIGGER_NUM:     889483,   Seg_Num: 0
GRB_RA:          284.640d {+18h 58m 34s} (J2000),
                 284.900d {+18h 59m 36s} (current),
                 283.960d {+18h 55m 50s} (1950)
GRB_DEC:          -8.235d {-08d 14' 05"} (J2000),
                  -8.208d {-08d 12' 28"} (current),
                  -8.304d {-08d 18' 13"} (1950)
GRB_ERROR:       3.00 [arcmin radius, statistical only]
GRB_INTEN:       0 [cnts]    Image_Peak=3705 [image_cnts]
TRIGGER_DUR:     320.000 [sec]   (=5.3 [min])
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:        18532 TJD;    49 DOY;   19/02/18
GRB_TIME:        32049.56 SOD {08:54:09.56} UT
GRB_PHI:         -115.81 [deg]
GRB_THETA:         6.59 [deg]
SOLN_STATUS:     0x13
RATE_SIGNIF:     0.00 [sigma]
IMAGE_SIGNIF:    8.54 [sigma]
MERIT_PARAMS:     +1  +0  +0  +6  +1  -1  +0  +1 -68  +0 
SUN_POSTN:       331.52d {+22h 06m 06s}  -11.68d {-11d 40' 38"}
SUN_DIST:         46.01 [deg]   Sun_angle= 3.1 [hr] (West of Sun)
MOON_POSTN:      134.22d {+08h 56m 54s}  +18.73d {+18d 43' 42"}
MOON_DIST:       149.66 [deg]
MOON_ILLUM:      98 [%]
GAL_COORDS:       26.39, -5.32 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:      284.97, 14.45 [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 = 4.51,19.59 [deg].  

GCN BAT Lightcurve Notice

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Mon 18 Feb 19 09:23:42 UT
NOTICE_TYPE:     Swift-BAT GRB Lightcurve
TRIGGER_NUM:     889483,   Seg_Num: 0
GRB_RA:          284.640d {+18h 58m 34s} (J2000),
                 284.900d {+18h 59m 36s} (current),
                 283.960d {+18h 55m 50s} (1950)
GRB_DEC:          -8.235d {-08d 14' 05"} (J2000),
                  -8.208d {-08d 12' 28"} (current),
                  -8.304d {-08d 18' 13"} (1950)
GRB_DATE:        18532 TJD;    49 DOY;   19/02/18
GRB_TIME:        32049.56 SOD {08:54:09.56} UT
TRIGGER_INDEX:   20000
GRB_PHI:         -115.81 [deg]
GRB_THETA:         6.59 [deg]
DELTA_TIME:      0.00 [sec]
TRIGGER_DUR:     320.000 [sec]   (=5.3 [min])
SOLN_STATUS:     0x13
RATE_SIGNIF:     0.00 [sigma]
IMAGE_SIGNIF:    8.54 [sigma]
LC_URL:          sw00889483000msb.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 18 04:24:03 EST 2019