TDRSS lightcurve for Trigger=519850

Notes:

GCN BAT Position Notice

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Tue 10 Apr 12 18:01:14 UT
NOTICE_TYPE:     Swift-BAT GRB Position
TRIGGER_NUM:     519850,   Seg_Num: 0
GRB_RA:          176.936d {+11h 47m 45s} (J2000),
                 177.087d {+11h 48m 21s} (current),
                 176.327d {+11h 45m 18s} (1950)
GRB_DEC:         -61.972d {-61d 58' 19"} (J2000),
                 -62.040d {-62d 02' 24"} (current),
                 -61.694d {-61d 41' 38"} (1950)
GRB_ERROR:       3.00 [arcmin radius, statistical only]
GRB_INTEN:       0 [cnts]    Image_Peak=1417 [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:        16027 TJD;   101 DOY;   12/04/10
GRB_TIME:        64791.91 SOD {17:59:51.91} UT
GRB_PHI:          -6.19 [deg]
GRB_THETA:        23.23 [deg]
SOLN_STATUS:     0x19D
RATE_SIGNIF:     0.00 [sigma]
IMAGE_SIGNIF:    6.67 [sigma]
MERIT_PARAMS:     +0  +0 +95  +6  +1  -4  +0  +1 +55  +0 
SUN_POSTN:        19.65d {+01h 18m 36s}   +8.29d {+08d 17' 37"}
SUN_DIST:        123.77 [deg]   Sun_angle= -10.5 [hr] (East of Sun)
MOON_POSTN:      255.16d {+17h 00m 39s}  -21.96d {-21d 57' 39"}
MOON_DIST:        65.15 [deg]
MOON_ILLUM:      79 [%]
GAL_COORDS:      295.53, -0.02 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:      214.96,-55.07 [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 matches a source in the on-board catalog: Num=10559=1E1145.1-6141,   delta=0.036 [deg].  
COMMENTS:        This matches a source in the ground catalog: 1E1145.1-6141,   delta=0.036 [deg].  
COMMENTS:        This is not a GRB.  
COMMENTS:        Since the IMAGE_SIGNIF is less than 7 sigma, this is a questionable detection.  
COMMENTS:        This trigger occurred at longitude,latitude = 99.94,-18.13 [deg].

GCN BAT Lightcurve Notice

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Tue 10 Apr 12 18:03:59 UT
NOTICE_TYPE:     Swift-BAT GRB Lightcurve
TRIGGER_NUM:     519850,   Seg_Num: 0
GRB_RA:          176.936d {+11h 47m 45s} (J2000),
                 177.087d {+11h 48m 21s} (current),
                 176.327d {+11h 45m 18s} (1950)
GRB_DEC:         -61.972d {-61d 58' 19"} (J2000),
                 -62.040d {-62d 02' 24"} (current),
                 -61.694d {-61d 41' 38"} (1950)
GRB_DATE:        16027 TJD;   101 DOY;   12/04/10
GRB_TIME:        64791.91 SOD {17:59:51.91} UT
TRIGGER_INDEX:   20000
GRB_PHI:          -6.19 [deg]
GRB_THETA:        23.23 [deg]
DELTA_TIME:      0.00 [sec]
TRIGGER_DUR:     64.000 [sec] 
SOLN_STATUS:     0x19D
RATE_SIGNIF:     0.00 [sigma]
IMAGE_SIGNIF:    6.67 [sigma]
LC_URL:          sw00519850000msb.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

Plot creation:
Tue Apr 10 14:10:48 EDT 2012