(All information courtesy of the instrument teams.)
Previous IAU Circulars
TITLE: GCN/SWIFT NOTICE NOTICE_DATE: Thu 27 Dec 07 20:14:10 UT NOTICE_TYPE: Swift-BAT GRB Position TRIGGER_NUM: 299787, Seg_Num: 0 GRB_RA: 58.120d {+03h 52m 29s} (J2000), 58.166d {+03h 52m 40s} (current), 57.830d {+03h 51m 19s} (1950) GRB_DEC: -55.953d {-55d 57' 08"} (J2000), -55.929d {-55d 55' 44"} (current), -56.100d {-56d 06' 00"} (1950) GRB_ERROR: 3.00 [arcmin radius, statistical only] GRB_INTEN: 4931 [cnts] Image_Peak=201 [image_cnts] TRIGGER_DUR: 1.024 [sec] TRIGGER_INDEX: 155 E_range: 50-350 keV BKG_INTEN: 21838 [cnts] BKG_TIME: 72813.53 SOD {20:13:33.53} UT BKG_DUR: 8 [sec] GRB_DATE: 14461 TJD; 361 DOY; 07/12/27 GRB_TIME: 72827.04 SOD {20:13:47.04} UT GRB_PHI: -84.09 [deg] GRB_THETA: 28.53 [deg] SOLN_STATUS: 0x3 RATE_SIGNIF: 37.85 [sigma] IMAGE_SIGNIF: 8.54 [sigma] MERIT_PARAMS: +1 +0 +0 +0 +3 +13 +0 +0 +7 +1 SUN_POSTN: 276.20d {+18h 24m 47s} -23.32d {-23d 18' 55"} SUN_DIST: 94.44 [deg] Sun_angle= -9.5 [hr] (East of Sun) MOON_POSTN: 147.69d {+09h 50m 46s} +13.43d {+13d 25' 57"} MOON_DIST: 100.83 [deg] MOON_ILLUM: 82 [%] GAL_COORDS: 267.44,-46.77 [deg] galactic lon,lat of the burst (or transient) ECL_COORDS: 19.83,-71.68 [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: This trigger occurred at longitude,latitude = 76.56,-1.67 [deg].
TITLE: GCN/SWIFT NOTICE NOTICE_DATE: Thu 27 Dec 07 20:15:36 UT NOTICE_TYPE: Swift-XRT Position TRIGGER_NUM: 299787, Seg_Num: 0 GRB_RA: 58.1307d {+03h 52m 31.3s} (J2000), 58.1771d {+03h 52m 42.5s} (current), 57.8409d {+03h 51m 21.8s} (1950) GRB_DEC: -55.9831d {-55d 58' 59.1"} (J2000), -55.9596d {-55d 57' 34.6"} (current), -56.1307d {-56d 07' 50.4"} (1950) GRB_ERROR: 5.4 [arcsec radius, statistical plus systematic, 90% containment] GRB_INTEN: 9.59e-10 [erg/cm2/sec] GRB_SIGNIF: 6.00 [sigma] IMG_START_DATE: 14461 TJD; 361 DOY; 07/12/27 IMG_START_TIME: 72906.13 SOD {20:15:06.13} UT, 79.1 [sec] since BAT Trigger Time TAM[0-3]: 327.64 237.23 261.29 243.67 AMPLIFIER: 2 WAVEFORM: 134 SUN_POSTN: 276.20d {+18h 24m 47s} -23.32d {-23d 18' 55"} SUN_DIST: 94.42 [deg] Sun_angle= -9.5 [hr] (East of Sun) MOON_POSTN: 147.70d {+09h 50m 49s} +13.43d {+13d 25' 37"} MOON_DIST: 100.83 [deg] MOON_ILLUM: 82 [%] GAL_COORDS: 267.48,-46.75 [deg] galactic lon,lat of the burst ECL_COORDS: 19.77,-71.71 [deg] ecliptic lon,lat of the burst COMMENTS: SWIFT-XRT Coordinates.
TITLE: GCN/SWIFT NOTICE NOTICE_DATE: Thu 27 Dec 07 20:15:37 UT NOTICE_TYPE: Swift-XRT Image TRIGGER_NUM: 299787, Seg_Num: 0 GRB_RA: 58.1307d {+03h 52m 31.3s} (J2000), 58.1771d {+03h 52m 42.5s} (current), 57.8409d {+03h 51m 21.8s} (1950) GRB_DEC: -55.9831d {-55d 58' 59.1"} (J2000), -55.9596d {-55d 57' 34.6"} (current), -56.1307d {-56d 07' 50.4"} (1950) GRB_ERROR: 5.4 [arcsec, radius, statistical plus systematic] GRB_INTEN: 36 [cnts] IMG_START_DATE: 14461 TJD; 361 DOY; 07/12/27 IMG_START_TIME: 72906.13 SOD {20:15:06.13} UT, 79.1 [sec] since BAT Trigger Time CENTROID_X: 254.12, raw= 254 [pixels] CENTROID_Y: 313.39, raw= 313 [pixels] ROLL: 214.58 [deg] GAIN: 1 MODE: 3, Long Image mode WAVEFORM: 134 EXPO_TIME: 2.50 [sec] GRB_POS_XRT_Y: 36.29 GRB_POS_XRT_Z: -113.56 IMAGE_URL: sw00299787000msxps_rw.img SUN_POSTN: 276.20d {+18h 24m 47s} -23.32d {-23d 18' 55"} SUN_DIST: 94.42 [deg] Sun_angle= -9.5 [hr] (East of Sun) MOON_POSTN: 147.70d {+09h 50m 49s} +13.43d {+13d 25' 37"} MOON_DIST: 100.83 [deg] MOON_ILLUM: 82 [%] GAL_COORDS: 267.48,-46.75 [deg] galactic lon,lat of the burst ECL_COORDS: 19.77,-71.71 [deg] ecliptic lon,lat of the burst COMMENTS: SWIFT-XRT Image.
TITLE: GCN/SWIFT NOTICE NOTICE_DATE: Thu 27 Dec 07 20:15:45 UT NOTICE_TYPE: Swift-XRT Processed Image TRIGGER_NUM: 299787, Seg_Num: 0 GRB_RA: 58.1307d {+03h 52m 31.3s} (J2000), 58.1771d {+03h 52m 42.5s} (current), 57.8409d {+03h 51m 21.8s} (1950) GRB_DEC: -55.9831d {-55d 58' 59.1"} (J2000), -55.9596d {-55d 57' 34.6"} (current), -56.1307d {-56d 07' 50.4"} (1950) GRB_ERROR: 5.4 [arcsec, radius, statistical plus systematic] GRB_INTEN: 36 [cnts] IMG_START_DATE: 14461 TJD; 361 DOY; 07/12/27 IMG_START_TIME: 72906.13 SOD {20:15:06.13} UT, 79.1 [sec] since BAT Trigger Time CENTROID_X: 254.12, raw= 254 [pixels] CENTROID_Y: 313.39, raw= 313 [pixels] ROLL: 214.58 [deg] GAIN: 1 MODE: 3, Long Image mode WAVEFORM: 134 EXPO_TIME: 2.50 [sec] GRB_POS_XRT_Y: 36.29 GRB_POS_XRT_Z: -113.56 IMAGE_URL: sw00299787000msxps_rw.img SUN_POSTN: 276.20d {+18h 24m 47s} -23.32d {-23d 18' 55"} SUN_DIST: 94.42 [deg] Sun_angle= -9.5 [hr] (East of Sun) MOON_POSTN: 147.71d {+09h 50m 49s} +13.43d {+13d 25' 35"} MOON_DIST: 100.83 [deg] MOON_ILLUM: 82 [%] GAL_COORDS: 267.48,-46.75 [deg] galactic lon,lat of the burst ECL_COORDS: 19.77,-71.71 [deg] ecliptic lon,lat of the burst COMMENTS: SWIFT-XRT Processed Image.
TITLE: GCN/SWIFT NOTICE NOTICE_DATE: Thu 27 Dec 07 20:17:16 UT NOTICE_TYPE: Swift-UVOT Source List TRIGGER_NUM: 299787, Seg_Num: 0 POINT_RA: 58.148d {+03h 52m 35s} (J2000) POINT_DEC: -55.951d {-55d 57' 04"} (J2000) POINT_ROLL: 214.580d IMG_START_DATE: 14461 TJD; 361 DOY; 07/12/27 IMG_START_TIME: 72912.89 SOD {20:15:12.89} UT, 85.9 [sec] since BAT Trigger Time FILTER: 10, White BKG_MEAN: 0.954 N_STARS: 26 X_OFFSET: 600 [pixels] Y_OFFSET: 584 [pixels] X_MAX: 1559 [pixels] Y_MAX: 1543 [pixels] DET_THRESH: 8 PHOTO_THRESH: 4 SL_URL: sw00299787000msufc0085.fits SUN_POSTN: 276.20d {+18h 24m 48s} -23.32d {-23d 18' 55"} SUN_DIST: 94.45 [deg] Sun_angle= -9.5 [hr] (East of Sun) MOON_POSTN: 147.72d {+09h 50m 52s} +13.42d {+13d 25' 14"} MOON_DIST: 100.82 [deg] MOON_ILLUM: 82 [%] GAL_COORDS: 267.43,-46.75 [deg] galactic lon,lat of the pointing direction ECL_COORDS: 19.86,-71.69 [deg] ecliptic lon,lat of the pointing direction COMMENTS: SWIFT-UVOT Source List.
TITLE: GCN/SWIFT NOTICE NOTICE_DATE: Thu 27 Dec 07 20:17:44 UT NOTICE_TYPE: Swift-UVOT Processed Source List TRIGGER_NUM: 299787, Seg_Num: 0 POINT_RA: 58.148d {+03h 52m 35s} (J2000) POINT_DEC: -55.951d {-55d 57' 04"} (J2000) POINT_ROLL: 214.580d IMG_START_DATE: 14461 TJD; 361 DOY; 07/12/27 IMG_START_TIME: 72912.89 SOD {20:15:12.89} UT, 85.9 [sec] since BAT Trigger Time FILTER: 10, White BKG_MEAN: 0.954 N_STARS: 26 X_OFFSET: 600 [pixels] Y_OFFSET: 584 [pixels] X_MAX: 1559 [pixels] Y_MAX: 1543 [pixels] DET_THRESH: 8 PHOTO_THRESH: 4 SL_URL: sw00299787000msufc0085.fits SUN_POSTN: 276.20d {+18h 24m 48s} -23.32d {-23d 18' 55"} SUN_DIST: 94.45 [deg] Sun_angle= -9.5 [hr] (East of Sun) MOON_POSTN: 147.72d {+09h 50m 53s} +13.42d {+13d 25' 08"} MOON_DIST: 100.82 [deg] MOON_ILLUM: 82 [%] GAL_COORDS: 267.43,-46.75 [deg] galactic lon,lat of the pointing direction ECL_COORDS: 19.86,-71.69 [deg] ecliptic lon,lat of the pointing direction COMMENTS: SWIFT-UVOT Processed Source List. COMMENTS: All 4 attachments are included.
TITLE: GCN/SWIFT NOTICE NOTICE_DATE: Thu 27 Dec 07 20:18:28 UT NOTICE_TYPE: Swift-UVOT Image TRIGGER_NUM: 299787, Seg_Num: 0 POINT_RA: 58.148d {+03h 52m 35s} (J2000) POINT_DEC: -55.951d {-55d 57' 04"} (J2000) ROLL: 214.580d IMG_START_DATE: 14461 TJD; 361 DOY; 07/12/27 IMG_START_TIME: 72912.89 SOD {20:15:12.89} UT, 85.9 [sec] since BAT Trigger Time FILTER: 10, White EXPOSURE_ID: 220479315 X_OFFSET: 977 [pixels] Y_OFFSET: 692 [pixels] WIDTH: 160 [pixels] HEIGHT: 160 [pixels] X_GRB_POS: 1137 Y_GRB_POS: 852 BINNING_INDEX: 1 IM_URL: sw00299787000msuni0085.fits SUN_POSTN: 276.20d {+18h 24m 48s} -23.32d {-23d 18' 54"} SUN_DIST: 94.45 [deg] Sun_angle= -9.5 [hr] (East of Sun) MOON_POSTN: 147.73d {+09h 50m 55s} +13.42d {+13d 24' 57"} MOON_DIST: 100.82 [deg] MOON_ILLUM: 82 [%] GAL_COORDS: 267.43,-46.75 [deg] galactic lon,lat of the pointing direction ECL_COORDS: 19.86,-71.69 [deg] ecliptic lon,lat of the pointing direction COMMENTS: SWIFT-UVOT Image. COMMENTS: The GRB Position came from the XRT Position Command. COMMENTS: The image has 2x2 binning (compression).
TITLE: GCN/SWIFT NOTICE NOTICE_DATE: Thu 27 Dec 07 20:18:35 UT NOTICE_TYPE: Swift-BAT GRB Lightcurve TRIGGER_NUM: 299787, Seg_Num: 0 GRB_RA: 58.120d {+03h 52m 29s} (J2000), 58.166d {+03h 52m 40s} (current), 57.830d {+03h 51m 19s} (1950) GRB_DEC: -55.953d {-55d 57' 08"} (J2000), -55.929d {-55d 55' 44"} (current), -56.100d {-56d 06' 00"} (1950) GRB_DATE: 14461 TJD; 361 DOY; 07/12/27 GRB_TIME: 72827.04 SOD {20:13:47.04} UT TRIGGER_INDEX: 155 GRB_PHI: -84.09 [deg] GRB_THETA: 28.53 [deg] DELTA_TIME: -70.00 [sec] TRIGGER_DUR: 1.024 [sec] SOLN_STATUS: 0x3 RATE_SIGNIF: 37.85 [sigma] IMAGE_SIGNIF: 8.54 [sigma] LC_URL: sw00299787000msb.lc SUN_POSTN: 276.20d {+18h 24m 48s} -23.32d {-23d 18' 54"} SUN_DIST: 94.44 [deg] Sun_angle= -9.5 [hr] (East of Sun) MOON_POSTN: 147.73d {+09h 50m 55s} +13.42d {+13d 24' 56"} MOON_DIST: 100.84 [deg] MOON_ILLUM: 82 [%] GAL_COORDS: 267.44,-46.77 [deg] galactic lon,lat of the burst (or transient) ECL_COORDS: 19.83,-71.68 [deg] ecliptic lon,lat of the burst (or transient) COMMENTS: SWIFT-BAT GRB Lightcurve. COMMENTS: COMMENTS: The next comments were copied from the BAT_POS Notice: 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: This trigger occurred at longitude,latitude = 76.56,-1.67 [deg].
TITLE: GCN/SWIFT NOTICE NOTICE_DATE: Thu 27 Dec 07 20:18:54 UT NOTICE_TYPE: Swift-UVOT Processed Image TRIGGER_NUM: 299787, Seg_Num: 0 POINT_RA: 58.148d {+03h 52m 35s} (J2000) POINT_DEC: -55.951d {-55d 57' 04"} (J2000) ROLL: 214.580d IMG_START_DATE: 14461 TJD; 361 DOY; 07/12/27 IMG_START_TIME: 72912.89 SOD {20:15:12.89} UT, 85.9 [sec] since BAT Trigger Time FILTER: 10, White EXPOSURE_ID: 220479315 X_OFFSET: 977 [pixels] Y_OFFSET: 692 [pixels] WIDTH: 160 [pixels] HEIGHT: 160 [pixels] X_GRB_POS: 1137 Y_GRB_POS: 852 BINNING_INDEX: 1 IM_URL: sw00299787000msuni0085.fits SUN_POSTN: 276.20d {+18h 24m 48s} -23.32d {-23d 18' 54"} SUN_DIST: 94.45 [deg] Sun_angle= -9.5 [hr] (East of Sun) MOON_POSTN: 147.73d {+09h 50m 56s} +13.41d {+13d 24' 51"} MOON_DIST: 100.82 [deg] MOON_ILLUM: 82 [%] GAL_COORDS: 267.43,-46.75 [deg] galactic lon,lat of the pointing direction ECL_COORDS: 19.86,-71.69 [deg] ecliptic lon,lat of the pointing direction COMMENTS: SWIFT-UVOT Processed Image. COMMENTS: The GRB Position came from the XRT Position Command. COMMENTS: The image has 2x2 binning (compression). COMMENTS: If you have elected to receive attachments: COMMENTS: The uvot_sources_image.fits.gz file does not exist; skipping the attachment.
TITLE: GCN/SWIFT NOTICE NOTICE_DATE: Thu 27 Dec 07 20:25:27 UT NOTICE_TYPE: Swift-UVOT Source List TRIGGER_NUM: 299787, Seg_Num: 0 POINT_RA: 58.150d {+03h 52m 36s} (J2000) POINT_DEC: -55.949d {-55d 56' 56"} (J2000) POINT_ROLL: 214.580d IMG_START_DATE: 14461 TJD; 361 DOY; 07/12/27 IMG_START_TIME: 73018.99 SOD {20:16:58.99} UT, 192.0 [sec] since BAT Trigger Time FILTER: 3, V BKG_MEAN: 0.899 N_STARS: 32 X_OFFSET: 657 [pixels] Y_OFFSET: 372 [pixels] X_MAX: 1616 [pixels] Y_MAX: 1331 [pixels] DET_THRESH: 8 PHOTO_THRESH: 4 SL_URL: sw00299787000msufc0191.fits SUN_POSTN: 276.20d {+18h 24m 49s} -23.32d {-23d 18' 54"} SUN_DIST: 94.45 [deg] Sun_angle= -9.5 [hr] (East of Sun) MOON_POSTN: 147.79d {+09h 51m 10s} +13.39d {+13d 23' 20"} MOON_DIST: 100.83 [deg] MOON_ILLUM: 82 [%] GAL_COORDS: 267.43,-46.75 [deg] galactic lon,lat of the pointing direction ECL_COORDS: 19.87,-71.69 [deg] ecliptic lon,lat of the pointing direction COMMENTS: SWIFT-UVOT Source List.
TITLE: GCN/SWIFT NOTICE NOTICE_DATE: Thu 27 Dec 07 20:25:56 UT NOTICE_TYPE: Swift-UVOT Processed Source List TRIGGER_NUM: 299787, Seg_Num: 0 POINT_RA: 58.150d {+03h 52m 36s} (J2000) POINT_DEC: -55.949d {-55d 56' 56"} (J2000) POINT_ROLL: 214.580d IMG_START_DATE: 14461 TJD; 361 DOY; 07/12/27 IMG_START_TIME: 73018.99 SOD {20:16:58.99} UT, 192.0 [sec] since BAT Trigger Time FILTER: 3, V BKG_MEAN: 0.899 N_STARS: 32 X_OFFSET: 657 [pixels] Y_OFFSET: 372 [pixels] X_MAX: 1616 [pixels] Y_MAX: 1331 [pixels] DET_THRESH: 8 PHOTO_THRESH: 4 SL_URL: sw00299787000msufc0191.fits SUN_POSTN: 276.21d {+18h 24m 49s} -23.32d {-23d 18' 54"} SUN_DIST: 94.45 [deg] Sun_angle= -9.5 [hr] (East of Sun) MOON_POSTN: 147.79d {+09h 51m 11s} +13.39d {+13d 23' 13"} MOON_DIST: 100.83 [deg] MOON_ILLUM: 82 [%] GAL_COORDS: 267.43,-46.75 [deg] galactic lon,lat of the pointing direction ECL_COORDS: 19.87,-71.69 [deg] ecliptic lon,lat of the pointing direction COMMENTS: SWIFT-UVOT Processed Source List. COMMENTS: All 4 attachments are included.
TITLE: GCN/SWIFT NOTICE NOTICE_DATE: Thu 27 Dec 07 20:26:34 UT NOTICE_TYPE: Swift-UVOT Image TRIGGER_NUM: 299787, Seg_Num: 0 POINT_RA: 58.150d {+03h 52m 36s} (J2000) POINT_DEC: -55.949d {-55d 56' 56"} (J2000) ROLL: 214.580d IMG_START_DATE: 14461 TJD; 361 DOY; 07/12/27 IMG_START_TIME: 73018.99 SOD {20:16:58.99} UT, 192.0 [sec] since BAT Trigger Time FILTER: 3, V EXPOSURE_ID: 220479421 X_OFFSET: 977 [pixels] Y_OFFSET: 692 [pixels] WIDTH: 160 [pixels] HEIGHT: 160 [pixels] X_GRB_POS: 1137 Y_GRB_POS: 852 BINNING_INDEX: 1 IM_URL: sw00299787000msuni0191.fits SUN_POSTN: 276.21d {+18h 24m 49s} -23.32d {-23d 18' 54"} SUN_DIST: 94.45 [deg] Sun_angle= -9.5 [hr] (East of Sun) MOON_POSTN: 147.80d {+09h 51m 12s} +13.38d {+13d 23' 04"} MOON_DIST: 100.83 [deg] MOON_ILLUM: 82 [%] GAL_COORDS: 267.43,-46.75 [deg] galactic lon,lat of the pointing direction ECL_COORDS: 19.87,-71.69 [deg] ecliptic lon,lat of the pointing direction COMMENTS: SWIFT-UVOT Image. COMMENTS: The GRB Position came from the XRT Position Command. COMMENTS: The image has 2x2 binning (compression).
TITLE: GCN/SWIFT NOTICE NOTICE_DATE: Thu 27 Dec 07 20:26:52 UT NOTICE_TYPE: Swift-UVOT Processed Image TRIGGER_NUM: 299787, Seg_Num: 0 POINT_RA: 58.150d {+03h 52m 36s} (J2000) POINT_DEC: -55.949d {-55d 56' 56"} (J2000) ROLL: 214.580d IMG_START_DATE: 14461 TJD; 361 DOY; 07/12/27 IMG_START_TIME: 73018.99 SOD {20:16:58.99} UT, 192.0 [sec] since BAT Trigger Time FILTER: 3, V EXPOSURE_ID: 220479421 X_OFFSET: 977 [pixels] Y_OFFSET: 692 [pixels] WIDTH: 160 [pixels] HEIGHT: 160 [pixels] X_GRB_POS: 1137 Y_GRB_POS: 852 BINNING_INDEX: 1 IM_URL: sw00299787000msuni0191.fits SUN_POSTN: 276.21d {+18h 24m 49s} -23.32d {-23d 18' 54"} SUN_DIST: 94.45 [deg] Sun_angle= -9.5 [hr] (East of Sun) MOON_POSTN: 147.80d {+09h 51m 12s} +13.38d {+13d 23' 00"} MOON_DIST: 100.83 [deg] MOON_ILLUM: 82 [%] GAL_COORDS: 267.43,-46.75 [deg] galactic lon,lat of the pointing direction ECL_COORDS: 19.87,-71.69 [deg] ecliptic lon,lat of the pointing direction COMMENTS: SWIFT-UVOT Processed Image. COMMENTS: The GRB Position came from the XRT Position Command. COMMENTS: The image has 2x2 binning (compression). COMMENTS: If you have elected to receive attachments: COMMENTS: The uvot_sources_image.fits.gz file does not exist; skipping the attachment.
RA(J2000) = 03h 52m 29s Dec(J2000) = -55d 57' 08"with an uncertainty of 3 arcmin (radius, 90% containment, including systematic uncertainty). The BAT light curve showed at least three spikes with a duration of about 5 sec. The peak count rate was ~4500 counts/sec (15-350 keV), at ~0.5 sec after the trigger.
RA(J2000) = 03h 52h 31.58s Dec(J2000) = -55d 58' 59.9"with an uncertainty of 3.7 arcseconds (radius, 90% containment). This location is 112 arcseconds from the BAT on-board position, within the BAT error circle. The initial flux in the 2.5s image was 9.6e-10 erg/cm2/s (0.2-10 keV).
RA(J2000) = 3h 52m 31.8s Dec(J2000) = -55d 57' 32"with an uncertainty of 1.7 arcmin, (radius, sys+stat, 90% containment). The partial coding was 48%.
RA: 03:52:31.102 DEC: -55:59:00.65with an uncertainty of 0.6 arcsec (90% confidence). This position is 4.5 arcsec from the XRT position.
Filter Tstart Tstop Exp Magnitude (s) (s) (s) White 86 6129 609 21.73 +- 0.36 v 68 6539 828 > 20.46 b 673 5923 409 > 21.01 u 648 5718 230 > 20.33 uvw1 624 5512 239 > 20.17 uvm2 599 10886 1191 > 21.00 uvw2 703 6334 419 > 20.65The values quoted above are not corrected for the expected Galactic extinction corresponding to a reddening of E_{B-V} = 0.01 mag in the direction of the burst (Schlegel et al. 1998).
RA (J2000): 03h 52m 31.21s Dec (J2000): -55d 59' 03.1"with an uncertainty of 2.0 arcsec (radius, 90% confidence). This is 4.5 arcsec away from the position derived from the promptly downlinked XRT data reported in Sakamoto et al. (GCN Circ. 7147), 91 arcsec from the refined BAT position of Sato et al. (GCN Circ. 7148) and 2.6 arcsec from the possible UVOT optical transient reported by Cucchiara and Sakamoto (GCN Circ. 7150).
R.A. = 03:52:31.26 Dec. = -55:59:03.5with an uncertainty of 0.3". The afterglow is located at about 3.1" from the bulge, which corresponds to about 16.1 kpc at z=0.383 (D'Avanzo et al. GCN 7152; Berger et al. GCN 7154).