Swift Trigger: 361831

Presumed name: GRB 090904B

BAT	17^h 36^m 45.84^s, -25° 12′ 43.2″
position:	(264.191, -25.212 ± 180″)
XRT	17^h 36^m 44.47^s, -25° 12′ 49.7″
position:	(264.1853, -25.2138 ± 2.0″)
UVOT	No position available.
Galactic N_HI:	0.00×10⁰ cm^-2
Galactic E(B-V):	1.762 mag

Best RA:	17^h 36^m 44.47^s	= 264.1853 d
Best Dec:	-25° 12′ 49.7″	= -25.2138 d

Gal Lat:
Gal Long:

Sun angle:	not found

GCN Notices for this burst.

View this region in Aladin.

Observability of this burst for Swift.

Sun angle for this burst.

UVOT data

unknown 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
0.3′′	264.18540	-25.21380	GCN #9881	GRB 090904B: Swift detection of a burst
2.7′′	264.18533	-25.21306	GCN #9887	GRB 090904B: Enhanced Swift-XRT position
33.6′′	264.19375	-25.21917	GCN #9890	GRB 090904B: 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
3.7	264.1855	-25.2128	2MASS J17364450-2512460	H=11.946, J=13.257, K=11.542, R=18.4
78.6	264.1612	-25.2150	2MASS J17363870-2512533	B=19.400, H=7.990, J=9.438, K=7.171, R=17.100

* 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
4.5	264.1855	-25.2126	I=15.1, R1=18.4	USNO-B1
10.7	264.1823	-25.2125	I=16.8, R1=19.0	USNO-B1
16.9	264.1849	-25.2185	I=15.7, R1=18.7	USNO-B1
24.5	264.1928	-25.2140	B2=19.6, I=14.1, R1=17.3	USNO-B1
29.2	264.1852	-25.2219	B2=19.5, I=13.5, R1=16.5	USNO-B1
32.3	264.1951	-25.2124	I=15.8, R1=19.2	USNO-B1
32.5	264.1941	-25.2181	I=14.7, R1=18.9	USNO-B1
32.6	264.1755	-25.2157	B=19.5, R2=18.7, i=18.1	SSS
36.2	264.1743	-25.2152	I=16.0, R1=18.1	USNO-B1
36.6	264.1965	-25.2133	I=15.3, R1=19.0	USNO-B1

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

There are 331 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
3.7	264.1854	-25.2128	h=11.9, j=13.3, k=11.5	2MASS
4.6	264.1855	-25.2151	h=13.4, j=14.5, k=13.0	2MASS
10.2	264.1825	-25.2125	h=13.8, j=14.9, k=13.4	2MASS
10.8	264.1879	-25.2156	h=15.5, j=15.7, k=15.1	2MASS
14.4	264.1826	-25.2170	h=14.4, j=15.5, k=13.9	2MASS
15.7	264.1876	-25.2176	h=13.6, j=14.6, k=13.2	2MASS
15.7	264.1844	-25.2095	h=13.2, j=14.3, k=12.8	2MASS
17.4	264.1847	-25.2186	h=12.8, j=14.0, k=12.4	2MASS
17.7	264.1887	-25.2100	h=12.1, j=13.4, k=11.6	2MASS
18.6	264.1888	-25.2097	I=13.5, R1=18.3	USNO-B1

Queried USNO-B1, SDSS, 2MASS.

There are 1611 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.