GRB 121017A

Time: 19:23:28
Trigger Number: 536172
Burst Advocate: Dirk Grupe

BAT Data:

RA: a	288.820 19:15:16.8
Dec: a	-1.602 -01:36:07.2
90% Error Radius: b	1.5
T90: c	4.2
Fluence: d	6.6 (0.7)
1s Peak Photon Flux: e	3.3 (0.4)
Photon Index: f	1.74, PL (0.17)

---

90% error in parentheses,
^a J2000; ^b arcmin; ^c seconds; ^d 10^-7 erg/cm² (15-150 keV); ^e ph/cm²/sec (15-150 keV); ^f PL = simple power-law, CPL = cutoff power-law (15-150 keV)

BAT Light Curve:

XRT Data:

RA: a	19:15:19.22
Dec: a	-01:36:16.3
90% Error Radius: b	1.4
Time to First Observation: c	95.25
Early Flux: d	n/a
11 Hour Flux: d	0.08171415
24 Hour Flux: d	0.038633175
Initial Temporal Index:	-0.9602
Spectral Index (Gamma):	2.14409
Column Density (NH): e	6.10587

---

Note: Please be aware that only the very basic temporal and spectral quantities are reported here. You are strongly encouraged to see the referenced GCN circulars for full details.
^a J2000; ^b arcsec; ^c seconds; ^d 10^-11 erg/cm²/s (0.3-10 keV); ^e 10²¹ cm^-2

» XRT GRB Live Catalogue
» XRT Light Curves
» XRT Spectra

UVOT Data:

RA: a	n/a
Dec: a	n/a
90% Error Radius: b	n/a
Time to First Observation: c	1141
V Magnitude:	V>18.5
Other Filter Magnitudes:	B>19.1 U>18.6 UVW1>18.1 UVW2>18.1 White>21.2

---

^a J2000; ^b arcsec; ^c seconds

Comments:

XRT and UVOT detections were delayed due to entry into the SAA shortly after the initial trigger.
UVOT: no detection

References:

BAT: GCN 13875; GCN 13880
XRT: GCN 13875; GCN 13879; GCN 13882; Evans et al., 2009, MNRAS, 397, 1177
UVOT: GCN 13875; GCN 13883
Radio:
Redshift:
Host:
Other: GCN Report 398.1