Swift Trigger: 519380

Presumed name: GRB 120404A

BAT	15^h 40^m 02.88^s, +12° 52′ 55.2″
position:	(235.012, +12.882 ± 180″)
XRT	15^h 40^m 02.33^s, +12° 53′ 05.3″
position:	(235.0097, 12.8848 ± 2.1″)
UVOT	15^h 40^m 02.28^s, +12° 53′ 06.0″
position:	(235.0095, +12.8850 ± 0.7″)
Galactic N_HI:	3.42×10²⁰ cm^-2
Galactic E(B-V):	0.050 mag

Best RA:	15^h 40^m 02.28^s	= 235.0095 d
Best Dec:	+12° 53′ 06.0″	= +12.8850 d

Gal Lat:	48.15
Gal Long:	21.6

Sun angle:	134.95°, 9.3 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

u image

white image

Blink images with DSS (link via GSFC)

XRT SPER data

SPER results page for this trigger.

There are 7 SPER messages, and 1 objects have been found

- Object 1 - enhanced position.
- RA (J2000) : 15 40 02.33 (12.8847)
- Dec (J2000): +12 53 04.9 ( 12.88473)
- Error (90%): 2.0
- Counts in Source: 590

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
0.1′′	235.00950	12.88503	GCN #13231	GRB 120404A: EVLA Detection
0.3′′	235.00954	12.88508	GCN #13208	GRB 120404A: Swift detection of a burst with an optical counterpart
1.0′′	235.00951	12.88471	GCN #13218	GRB 120404A: Enhanced Swift-XRT position
1.7′′	235.00904	12.88514	GCN #13235	GRB 120404A: optical observations
27.3′′	235.00200	12.88300	GCN #13220	GRB 120404A: Swift-BAT refined analysis

There are 11 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
136.0	235.0094	12.9226	TYC 937-198-1	B=11.99, V=10.84

* 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
4.7	235.0105	12.8838	R=23.2, g=23.6, i=21.7, u=23.0, z=21.9	SDSS
15.7	235.0070	12.8813	R=22.9, g=22.6, i=22.3, u=25.1, z=23.1	SDSS
28.0	235.0017	12.8869	Mag=21.9	NED
28.8	235.0018	12.8869	R=20.9, g=22.2, i=20.5, u=22.7, z=20.2	SDSS
32.6	235.0033	12.8917	Mag=22.9	NED
33.6	235.0032	12.8917	R=21.4, g=22.9, i=21.0, u=26.0, z=20.5	SDSS
34.2	235.0155	12.8772	R=21.8, g=22.6, i=21.5, u=23.6, z=22.1	SDSS
35.2	235.0154	12.8772	Mag=22.6	NED
36.7	235.0200	12.8865	R=22.1, g=23.0, i=22.2, u=22.8, z=22.3	SDSS
37.3	235.0200	12.8864	Mag=22.7	NED

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

There are 306 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
25.9	235.0026	12.8866	R1=19.8, R2=19.5	USNO-B1
45.5	235.0047	12.8731	I=21.4, R=22.0, g=23.3, u=24.2, z=21.6	SDSS
45.9	235.0132	12.8725	I=21.8, R=22.6, g=23.4, u=23.5, z=21.8	SDSS
51.6	234.9951	12.8867	B1=20.8, B2=20.4, R1=19.7	USNO-B1
52.4	235.0028	12.8719	I=21.2, R=21.3, g=21.7, u=22.5, z=21.5	SDSS
53.8	235.0028	12.8714	B1=20.9, B2=20.5	USNO-B1
57.4	235.0075	12.8690	B1=18.4, B2=18.8, I=18.5, R1=18.7, R2=18.6	USNO-B1
57.6	235.0014	12.8986	B2=20.3, R1=19.8, R2=20.6	USNO-B1
57.6	235.0074	12.8689	I=18.6, R=18.8, g=19.1, u=20.0, z=18.6	SDSS
59.0	235.0016	12.8992	I=20.1, R=20.6, g=22.1, u=25.1, z=19.7	SDSS

Queried USNO-B1, SDSS, 2MASS.

There are 201 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.