TDRSS lightcurve for Trigger=848621

Notes:

GCN BAT Position Notice

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Wed 18 Jul 18 21:55:50 UT
NOTICE_TYPE:     Swift-BAT GRB Position
TRIGGER_NUM:     848621,   Seg_Num: 0
GRB_RA:          190.395d {+12h 41m 35s} (J2000),
                 190.629d {+12h 42m 31s} (current),
                 189.765d {+12h 39m 04s} (1950)
GRB_DEC:         +11.798d {+11d 47' 53"} (J2000),
                 +11.696d {+11d 41' 47"} (current),
                 +12.072d {+12d 04' 20"} (1950)
GRB_ERROR:       4.00 [arcmin radius, statistical only]
GRB_INTEN:       0 [cnts]    Image_Peak=1011 [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:        18317 TJD;   199 DOY;   18/07/18
GRB_TIME:        78874.71 SOD {21:54:34.71} UT
GRB_PHI:         -10.94 [deg]
GRB_THETA:        34.57 [deg]
SOLN_STATUS:     0x1099D
RATE_SIGNIF:     0.00 [sigma]
IMAGE_SIGNIF:    5.86 [sigma]
MERIT_PARAMS:     +0  +0 +125  +6  +1  -5  -5  +0 -35  +1 
SUN_POSTN:       118.23d {+07h 52m 55s}  +20.90d {+20d 54' 13"}
SUN_DIST:         69.58 [deg]   Sun_angle= -4.8 [hr] (East of Sun)
MOON_POSTN:      195.80d {+13h 03m 13s}   -1.41d {-01d 24' 47"}
MOON_DIST:        14.08 [deg]
MOON_ILLUM:      41 [%]
GAL_COORDS:      293.87, 74.50 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:      184.79, 14.94 [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 is a low-flux event whose position matches one of the nearby galaxy sources in the on-board catalog!  
COMMENTS:        This matches a source in the on-board catalog: Num=12598=NGC4606,   delta=0.190 [deg].  
COMMENTS:        This matches a source in the ground catalog: I3672,   delta=0.148 [deg].  
COMMENTS:        This is a GRB in nearby galaxy or it is noise.  
COMMENTS:        This trigger occurred at longitude,latitude = 258.56,-19.87 [deg].

GCN BAT Lightcurve Notice

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Wed 18 Jul 18 22:12:04 UT
NOTICE_TYPE:     Swift-BAT GRB Lightcurve
TRIGGER_NUM:     848621,   Seg_Num: 0
GRB_RA:          190.395d {+12h 41m 35s} (J2000),
                 190.629d {+12h 42m 31s} (current),
                 189.765d {+12h 39m 04s} (1950)
GRB_DEC:         +11.798d {+11d 47' 53"} (J2000),
                 +11.696d {+11d 41' 47"} (current),
                 +12.072d {+12d 04' 20"} (1950)
GRB_DATE:        18317 TJD;   199 DOY;   18/07/18
GRB_TIME:        78874.71 SOD {21:54:34.71} UT
TRIGGER_INDEX:   20000
GRB_PHI:         -10.94 [deg]
GRB_THETA:        34.57 [deg]
DELTA_TIME:      0.00 [sec]
TRIGGER_DUR:     64.000 [sec] 
SOLN_STATUS:     0x99D
RATE_SIGNIF:     0.00 [sigma]
IMAGE_SIGNIF:    5.86 [sigma]
LC_URL:          sw00848621000msb.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:
Wed Jul 18 18:12:23 EDT 2018