Swift Trigger: 522586

Presumed name: GRB 120521B

BAT	13^h 08^m 03.36^s, -52° 44′ 45.6″
position:	(197.014, -52.746 ± 180″)
XRT	13^h 08^m 02.28^s, -52° 45′ 17.6″
position:	(197.0095, -52.7549 ± 2.2″)
UVOT	No position available.
Galactic N_HI:	2.27×10²¹ cm^-2
Galactic E(B-V):	0.454 mag

Best RA:	13^h 08^m 02.28^s	= 197.0095 d
Best Dec:	-52° 45′ 17.6″	= -52.7549 d

Gal Lat:	10.03
Gal Long:	305.48

Sun angle:	134.51°, -9.23 hr East of Sun

¹Sper #10 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 12 SPER messages, and 1 objects have been found

- Object 1 - enhanced position.
- RA (J2000) : 13 08 02.32 (-52.7550)
- Dec (J2000): -52 45 17.9 ( -52.75465)
- Error (90%): 2.2
- Counts in Source: 130

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
1.0′′	197.00990	-52.75479	GCN #13311	GRB 120521B: Enhanced Swift-XRT position
1.1′′	197.01000	-52.75480	GCN #13305	GRB 120521B: Swift detection of a burst
48.0′′	197.01625	-52.74219	GCN #13317	GRB 120521B: Swift-BAT refined analysis

Catalogue Searches. Searched 3.33′ around XRT 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
146.7	197.0639	-52.7790	TYC 8649-661-1	B=12.56, V=11.62
191.9	196.9674	-52.7081	CCDM J13079-5242AB	B=9.30, H=7.099, J=7.381, K=7.041, V=8.77

* 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
3.0	197.0084	-52.7554	B2=18.4, I=17.1, R1=17.0, R2=17.2	USNO-B1
13.3	197.0041	-52.7532	R1=18.3, R2=19.6	USNO-B1
18.5	197.0126	-52.7597	B=21.6, R2=20.5	SSS
19.8	197.0174	-52.7576	B2=20.0, R1=18.7, R2=19.7	USNO-B1
21.0	197.0183	-52.7573	B2=19.8, R1=18.9	USNO-B1
30.4	197.0154	-52.7626	B2=18.2, I=17.0, R1=17.0, R2=17.4	USNO-B1
31.3	197.0112	-52.7635	B2=18.3, I=16.8, R1=16.9, R2=17.2	USNO-B1
32.8	197.0028	-52.7631	B=18.6, R2=17.2, i=16.5	SSS
33.5	197.0152	-52.7463	B2=18.5, R1=17.4, R2=19.2	USNO-B1
38.5	197.0023	-52.7451	B2=17.9, I=16.4, R1=15.2	USNO-B1

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

There are 205 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
3.4	197.0082	-52.7555	h=15.3, j=15.8, k=15.2	2MASS
13.2	197.0043	-52.7568	B2=20.0, I=18.0, R1=18.5, R2=19.7	USNO-B1
13.7	197.0042	-52.7569	h=15.8, j=16.5, k=15.1	2MASS
19.7	197.0009	-52.7533	h=16.0, j=16.7, k=16.4	2MASS
19.7	197.0009	-52.7532	B2=19.4, I=17.9, R1=18.1, R2=19.2	USNO-B1
19.8	197.0032	-52.7509	B2=17.4, I=15.8, R1=15.6, R2=16.1	USNO-B1
20.4	197.0027	-52.7510	h=14.6, j=15.0, k=14.4	2MASS
23.7	197.0199	-52.7530	R1=18.9, R2=20.1	USNO-B1
24.9	197.0203	-52.7572	B2=19.7, I=18.0, R1=18.1, R2=19.5	USNO-B1
25.6	197.0131	-52.7481	h=15.9, j=16.6, k=16.1	2MASS

Queried USNO-B1, SDSS, 2MASS.

There are 749 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.