Swift Trigger: 591392

Presumed name: GRB 140311B

BAT	16^h 49^m 09.84^s, +52° 44′ 49.2″
position:	(252.291, +52.747 ± 180″)
XRT	16^h 49^m 17.90^s, +52° 43′ 26.1″
position:	(252.32458, 52.72393 ± 3.6″)
UVOT	No position available.
Galactic N_HI:	3.03×10⁰ cm^-2
Galactic E(B-V):	0.051 mag

Best RA:	16^h 49^m 17.90^s	= 252.32458 d
Best Dec:	+52° 43′ 26.1″	= 52.72393 d

Gal Lat:	39.55
Gal Long:	80.36

Sun angle:	98.55°, 6.6 hr West

¹Sper #4 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

white image

Blink images with DSS (link via GSFC)

XRT SPER data

SPER results page for this trigger.

There are 14 SPER messages, and 1 objects have been found

- Object 1
- RA (J2000) : 16 49 17.81 ( 252.32420)
- Dec (J2000): +52 43 26.4 ( 52.72399)
- Error (90%): 3.553"
- Counts in Source: 229

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
0.0′′	252.32458	52.72393	GCN #15950	GRB 140311B: Swift-XRT observations
0.7′′	252.32487	52.72400	GCN #15949	GRB 140311B: Nanshan afterglow detection
0.9′′	252.32420	52.72400	GCN #15951	GRB140311B: Swift/XRT position
1.7′′	252.32517	52.72425	GCN #15958	GRB 140311B: Enhanced Swift-XRT position
37.5′′	252.33300	52.73300	GCN #15979	GRB 140311B: Swift-BAT refined analysis
110.4′′	252.29167	52.74722	GCN #15945	GRB 140311B: Swift detection of a burst

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
59.5	252.3437	52.7357	1RXS J164922.5+524408
69.1	252.2954	52.7164	NVSS J164911+524302
74.2	252.3478	52.7390	USNO-A2.0 1425-08616570	B=18.7, R=18.3

There are 3 SIMBAD objects within the position error. The full list is here.

* RA/Dec in equinox J2000

X-ray sources

	RA*	Dec*		Source table²	Observatory	Query
59.5	252.3437	52.7357	0.00793 +/- 0.003329	ROSAT

Queried the X-ray MASTER catalogue.

* RA/Dec in equinox J2000

¹Energy band for count-rate is mission specific.

Galaxies

	RA*	Dec*		Catalogue
22.0	252.3342	52.7253	Mag=23.0	NED
22.0	252.3344	52.7253	R=22.4, g=23.0, i=21.7, u=23.4, z=22.1	SDSS
24.8	252.3133	52.7232	B1=21.1, B2=21.2, I=18.8, R1=19.0, R2=20.1	USNO-B1
25.0	252.3131	52.7235	R=19.7, g=20.8, i=19.2, u=25.1, z=18.7	SDSS
25.0	252.3129	52.7233	Mag=20.8	NED
25.2	252.3200	52.7306	Mag=22.9	NED
26.1	252.3126	52.7234	B=21.9, R=19.1	APM-N
27.1	252.3258	52.7164	B2=21.2, I=18.6, R2=20.4	USNO-B1
27.8	252.3258	52.7161	Mag=21.3	NED
27.9	252.3258	52.7162	R=20.3, g=21.4, i=19.9, u=21.5, z=19.7	SDSS

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

There are 527 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
24.9	252.3132	52.7235	B2=21.1, I=18.4, R1=19.6, R2=19.6	USNO-B1
25.2	252.3203	52.7304	I=22.2, R=22.5, g=22.9, u=23.1, z=22.0	SDSS
27.1	252.3323	52.7298	I=22.2, R=25.0, g=24.9, u=24.7, z=21.8	SDSS
27.7	252.3253	52.7162	B2=21.1, I=18.5, R1=19.8, R2=19.9	USNO-B1
28.4	252.3251	52.7160	B2=20.5, R2=19.9	USNO-B1
28.6	252.3368	52.7269	I=22.1, R=22.7, g=23.0, u=25.3, z=22.6	SDSS
38.4	252.3192	52.7138	I=20.8, R=22.0, g=23.6, u=24.2, z=20.2	SDSS
39.4	252.3278	52.7347	I=20.1, R=20.7, g=21.6, u=22.1, z=19.5	SDSS
39.7	252.3279	52.7348	B2=21.1, I=18.5, R1=19.6, R2=20.3	USNO-B1
39.8	252.3164	52.7141	B2=21.0, R1=19.8, R2=19.7	USNO-B1

Queried USNO-B1, SDSS, 2MASS.

There are 298 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.