Swift Trigger: 553977

Presumed name: GRB 130420A

BAT	13^h 04^m 24.00^s, +59° 25′ 26.4″
position:	(196.100, +59.424 ± 180″)
XRT	13^h 04^m 25.56^s, +59° 25′ 27.8″
position:	(196.1065, 59.4244 ± 2.0″)
UVOT	13^h 04^m 25.56^s, +59° 25′ 26.8″
position:	(196.1065, +59.4241 ± 0.8″)
Galactic N_HI:	1.26×10²⁰ cm^-2
Galactic E(B-V):	NED unavailable

Best RA:	13^h 04^m 25.56^s	= 196.1065 d
Best Dec:	+59° 25′ 26.8″	= +59.4241 d

Gal Lat:	57.63
Gal Long:	119.85

Sun angle:	108.38°, -11.2 hr East of Sun

¹Sper #14 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 - enhanced position.
- RA (J2000) : 13 04 25.55 (59.4244)
- Dec (J2000): +59 25 27.9 ( 59.42325)
- Error (90%): 2.0
- Counts in Source: 600

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′′	196.10650	59.42411	GCN #14428	GRB 130420A: ISON-NM optical observations
0.1′′	196.10654	59.42408	GCN #14405	GRB 130420A: Faulkes Telescope North candidate
0.2′′	196.10654	59.42414	GCN #14406	GRB 130420A: Swift detection of a burst with an optical counterpart
0.3′′	196.10646	59.42419	GCN #14424	GRB 130420A: Swift/UVOT Detection
0.5′′	196.10626	59.42406	GCN #14416	GRB 130420A: Enhanced Swift-XRT position
0.6′′	196.10629	59.42422	GCN #14410	GRB 130420A: T21 optical observations
0.6′′	196.10625	59.42422	GCN #14407	GRB 130420A: ROTSE-III Detection of Optical Counterpart
23.2′′	196.11792	59.42133	GCN #14419	GRB 130420A� Swift-BAT refined analysis
144.7′′	196.02750	59.42367	GCN #14427	Skynet/GORT observations of GRB130420A

There are 15 matches in total. See the full table for details.

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
95.5	196.1396	59.4039	NVSS J130433+592413
134.8	196.1341	59.4591	GD 323	B=14.39, H=15.060, J=14.977, K=15.112, V=14.52

* RA/Dec in equinox J2000

X-ray sources

	RA*	Dec*		Source table²	Observatory	Query
127.8	196.1320	59.4572	3.163e-3 +/- 1.145e-3	0.000e+0	CMA

Queried the X-ray MASTER catalogue.

* RA/Dec in equinox J2000

¹Energy band for count-rate is mission specific.

Galaxies

	RA*	Dec*		Catalogue
11.3	196.1029	59.4217	Mag=22.2	NED
12.2	196.1029	59.4216	R=22.2, g=22.9, i=21.3, u=23.0, z=21.2	SDSS
18.5	196.1005	59.4286	B=21.1, R=20.0	APM-N
19.9	196.1008	59.4289	Mag=21.4	NED
24.8	196.1195	59.4263	B=22.0, R=19.2	APM-N
27.6	196.1170	59.4299	R=21.7, g=22.5, i=21.1, u=22.4, z=20.9	SDSS
28.4	196.1171	59.4300	Mag=22.5	NED
32.8	196.1229	59.4208	R=23.0, g=22.5, i=21.4, u=22.0, z=21.7	SDSS
33.7	196.1048	59.4337	R=21.7, g=23.7, i=21.8, u=22.4, z=21.8	SDSS
34.7	196.1046	59.4336	Mag=23.6	NED

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

There are 342 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
16.0	196.1060	59.4200	B2=22.0, R1=20.1	USNO-B1
18.9	196.1008	59.4288	I=21.0, R=21.1, g=21.4, u=22.3, z=21.3	SDSS
19.5	196.1009	59.4290	B1=20.7, B2=21.6	USNO-B1
19.6	196.1006	59.4289	B1=20.6, B2=21.9, R1=20.2	USNO-B1
36.9	196.0896	59.4300	h=14.4, j=14.9, k=14.3	2MASS
36.9	196.0895	59.4299	I=16.0, R=16.3, g=17.0, u=18.8, z=15.9	SDSS
37.0	196.0896	59.4300	B1=17.5, B2=17.0, I=15.5, R1=16.1, R2=16.2	USNO-B1
37.7	196.0870	59.4210	B2=21.8, R1=20.1	USNO-B1
42.1	196.0856	59.4196	I=22.1, R=23.9, g=23.9, u=24.2, z=21.3	SDSS
45.5	196.1309	59.4267	I=20.5, R=21.1, g=22.5, u=22.8, z=20.0	SDSS

Queried USNO-B1, SDSS, 2MASS.

There are 153 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.