Swift Trigger: 553996

Presumed name: GRB 130420B

BAT	12^h 12^m 28.80^s, +54° 23′ 09.6″
position:	(183.120, +54.386 ± 180″)
XRT	No position available.
UVOT	No position available.
Galactic N_HI:	1.45×10²⁰ cm^-2
Galactic E(B-V):	NED unavailable

Best RA:	12^h 12^m 28.80^s	= 183.120 d
Best Dec:	+54° 23′ 09.6″	= +54.386 d

Gal Lat:	61.82
Gal Long:	134.97

Sun angle:	110.63°, -10.3 hr East of Sun

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.

No SPER data received yet. Refresh this page to check again.

Known transients within 5′ of the GRB

Click on the offset to view the transient announcement.

Offset (′′)	RA	Dec	Source	Misc
0.0′′	183.12000	54.38600	GCN #14411	GRB 130420B: Swift detection of a burst
23.4′′	183.12804	54.39053	GCN #14421	GRB 130420B: Enhanced Swift-XRT position
24.0′′	183.12838	54.39054	GCN #14430	GRB 130420B: Swift-XRT refined Analysis
63.6′′	183.09500	54.37600	GCN #14420	GRB 130420B� Swift-BAT refined analysis

Catalogue Searches. Searched 3.33′ around BAT 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

* 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
16.3	183.1121	54.3867	Mag=15.3	NED
17.6	183.1133	54.3831	Mag=20.7	NED
17.7	183.1134	54.3829	R=20.1, g=20.5, i=19.9, u=22.2, z=19.8	SDSS
29.4	183.1060	54.3866	R=22.2, g=23.3, i=21.4, u=23.1, z=20.4	SDSS
29.4	183.1058	54.3867	Mag=22.9	NED
38.0	183.1097	54.3773	R=22.6, g=23.7, i=21.2, u=24.7, z=20.7	SDSS
40.5	183.1108	54.3761	Mag=21.5	NED
40.5	183.1107	54.3761	R=20.8, g=21.5, i=20.5, u=22.5, z=20.1	SDSS
43.3	183.0994	54.3871	R=20.8, g=21.5, i=18.1, u=28.8, z=17.3	SDSS
43.9	183.1001	54.3822	R=22.6, g=22.7, i=21.0, u=23.2, z=21.1	SDSS

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

There are 327 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
12.2	183.1229	54.3831	I=22.1, R=23.3, g=25.6, u=23.5, z=21.2	SDSS
16.3	183.1123	54.3866	h=13.6, j=13.9, k=13.5	2MASS
16.3	183.1123	54.3866	I=14.8, R=14.9, g=15.3, u=16.5, z=14.7	SDSS
16.5	183.1122	54.3867	B1=16.0, B2=15.5, I=14.6, R1=14.6, R2=14.6	USNO-B1
17.5	183.1133	54.3831	B1=20.8, B2=20.7, R1=19.6, R2=20.1	USNO-B1
37.1	183.1343	54.3799	I=21.5, R=24.1, g=24.3, u=23.4, z=20.5	SDSS
38.2	183.1103	54.3770	B2=20.9, R1=19.6, R2=20.3	USNO-B1
39.7	183.1094	54.3768	I=23.5, R=24.5, g=25.6, u=23.9, z=20.3	SDSS
53.1	183.0948	54.3875	h=12.2, j=12.8, k=12.1	2MASS
53.2	183.0948	54.3875	B1=16.0, B2=15.6, I=13.7, R1=13.9, R2=14.0	USNO-B1

Queried USNO-B1, SDSS, 2MASS.

There are 133 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.