Swift Trigger: 535764

Presumed name: GRB 121011A

BAT	17^h 20^m 48.00^s, +41° 08′ 13.2″
position:	(260.200, +41.137 ± 180″)
XRT	17^h 20^m 51.61^s, +41° 06′ 42.4″
position:	(260.21504, 41.11179 ± 4.3″)
UVOT	17^h 20^m 51.19^s, +41° 06′ 36.7″
position:	(260.2133, +41.1102 ± 0.6″)
Galactic N_HI:	2.34×10²⁰ cm^-2
Galactic E(B-V):	NED unavailable

Best RA:	17^h 20^m 51.19^s	= 260.2133 d
Best Dec:	+41° 06′ 36.7″	= +41.1102 d

Gal Lat:	33.92
Gal Long:	66.01

Sun angle:	75.30°, -4.2 hr East of Sun

¹Sper #1 auto processing.

GCN Notices for this burst.

View this region in Aladin.

Observability of this burst for Swift.

Sun angle for this burst.

UVOT data

u image

white image

Blink images with DSS (link via GSFC)

XRT SPER data

SPER results page for this trigger.

There are 2 SPER messages, and 1 objects have been found

- Object 1
- RA (J2000) : 17 20 51.56 ( 260.21482)
- Dec (J2000): +41 06 43.1 ( 41.11196)
- Error (90%): 4.132"
- Counts in Source: 95

See the SPER page for details of how this position was produced.

Known transients within 5′ of the GRB

Click on the offset to view the transient announcement.

Offset (′′)	RA	Dec	Source	Misc
0.4′′	260.21342	41.11025	GCN #13845	GRB 121011A: Swift detection of a burst with optical afterglow
0.6′′	260.21346	41.11031	GCN #13864	GRB 121011A: Swift/UVOT Detection
0.8′′	260.21342	41.11039	GCN #13853	GRB 121011A: TNG optical observations
3.7′′	260.21466	41.11031	GCN #13850	GRB 121011A: Enhanced Swift-XRT position
52.0′′	260.20417	41.12289	GCN #13852	GRB 121011A� Swift-BAT refined analysis

There are 12 matches in total. See the full table for details.

Catalogue Searches. Searched 3.33′ around UVOT position

Click on the distance to view the full details (not available for sources from the SSS catalogue). Click on the column headers to sort the table on that column (click again to invert sort order).

SIMBAD

	RA*	Dec*	SIMBAD name		Query
63.6	260.2225	41.0940	FIRST J172053.4+410538
132.5	260.2150	41.1470	TYC 3090-17-1	B=12.08, V=11.08

* RA/Dec in equinox J2000

X-ray sources

	RA*	Dec*		Source table²	Observatory	Query

Queried the X-ray MASTER catalogue.

* RA/Dec in equinox J2000

¹Energy band for count-rate is mission specific.

Galaxies

	RA*	Dec*		Catalogue
24.6	260.2217	41.1078	Mag=21.6	NED
35.5	260.2125	41.1200	Mag=21.8	NED
36.8	260.2013	41.1056	Mag=19.3	NED
36.8	260.2012	41.1055	R=18.3, g=19.3, i=17.8, u=21.0, z=17.5	SDSS
37.0	260.2012	41.1055	B=19.9, R=17.2	APM-N
37.4	260.2011	41.1054	B=20.2, R=20.0	APM-N
37.9	260.2196	41.1194	Mag=22.5	NED
37.9	260.2100	41.1206	Mag=22.1	NED
38.6	260.2199	41.1197	R1=20.3, R2=20.4	USNO-B1
40.8	260.2092	41.1211	Mag=22.6	NED

Queried APM-N, SDSS, PSCz, SSS, NED, 2MASSX, USNO-B1.

There are 448 galaxies within the position error. The full list is here.

* RA/Dec in equinox J2000

Magnitudes depend on the catalogue. e.g. For Sloan, R is the Sloan r mag, not the Johnson R from APM, for example

Stars

	RA*	Dec*		Catalogue
24.3	260.2218	41.1080	B2=21.8, R1=19.6, R2=19.9	USNO-B1
24.6	260.2218	41.1079	I=19.0, R=20.2, g=21.6, u=24.0, z=18.4	SDSS
35.4	260.2127	41.1200	I=19.7, R=20.5, g=21.9, u=24.1, z=19.2	SDSS
36.1	260.2127	41.1202	B2=21.6, I=18.2, R1=20.2, R2=20.0	USNO-B1
36.9	260.2012	41.1056	B1=19.9, B2=19.2, I=17.9, R1=17.9, R2=17.6	USNO-B1
37.0	260.2011	41.1056	h=16.2, j=16.7, k=15.2	2MASS
37.9	260.2198	41.1195	I=20.7, R=21.1, g=22.5, u=26.0, z=20.3	SDSS
37.9	260.2100	41.1204	I=21.6, R=21.8, g=22.0, u=23.6, z=21.4	SDSS
41.7	260.2262	41.1165	I=21.8, R=22.7, g=23.5, u=23.9, z=22.6	SDSS
44.5	260.2233	41.1200	B2=20.8, R1=19.6, R2=20.2	USNO-B1

Queried USNO-B1, SDSS, 2MASS.

There are 327 stars within the position error. The full list is here.

* RA/Dec in equinox J2000

Magnitudes depend on the catalogue. e.g. For Sloan, R is the Sloan r mag, not the Johnson R from APM, for example.