Swift Trigger: 345945

Presumed name: GRB 090309

BAT	18^h 59^m 55.44^s, -25° 15′ 50.4″
position:	(284.981, -25.264 ± 180″)
XRT	18^h 59^m 53.52^s, -25° 15′ 40.0″
position:	(284.9730, -25.2611 ± 3.3″)
UVOT	No position available.
Galactic N_HI:	0.00×10⁰ cm^-2
Galactic E(B-V):	0.231 mag

Best RA:	18^h 59^m 53.52^s	= 284.9730 d
Best Dec:	-25° 15′ 40.0″	= -25.2611 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
0.0′′	284.97300	-25.26110	GCN #8964	GRB 090309: Swift detection of a burst
4.1′′	284.97425	-25.26100	GCN #8969	GRB 090309: Enhanced Swift-XRT position
49.2′′	284.97800	-25.27400	GCN #8967	GRB 090309� 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
67.6	284.9812	-25.2783	GRB 090309
131.8	284.9354	-25.2747	LEDA 209677

* 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
0.2	284.9729	-25.2611		NED
13.3	284.9697	-25.2589	I=16.9, R1=17.8, R2=18.0	USNO-B1
15.5	284.9762	-25.2643	B=19.6, R2=18.7, i=18.2	SSS
18.4	284.9782	-25.2631	B1=18.5, B2=17.9, I=16.1, R1=16.7, R2=16.5	USNO-B1
22.1	284.9715	-25.2551	B=20.2, R2=19.0, i=18.4	SSS
23.7	284.9663	-25.2584	B=22.2	SSS
24.4	284.9722	-25.2544	B=19.7, R2=18.2, i=17.9	SSS
25.6	284.9655	-25.2631	B2=19.6, I=18.2	USNO-B1
27.0	284.9777	-25.2673	B=19.5, R2=18.3, i=17.9	SSS
28.2	284.9727	-25.2689	B2=19.8, R1=18.7	USNO-B1

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

There are 472 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
9.1	284.9758	-25.2609	B1=18.4, B2=17.8, I=16.1, R1=16.8, R2=16.8	USNO-B1
9.3	284.9758	-25.2610	h=14.4, j=15.1, k=14.3	2MASS
10.0	284.9742	-25.2637	B1=17.1, B2=16.7, I=15.2, R1=15.8, R2=15.6	USNO-B1
10.5	284.9743	-25.2638	h=13.9, j=14.4, k=13.8	2MASS
13.0	284.9697	-25.2591	h=14.7, j=15.5, k=14.6	2MASS
15.1	284.9762	-25.2642	B1=19.5, B2=19.1, I=17.7	USNO-B1
18.5	284.9782	-25.2632	h=14.5, j=15.0, k=14.3	2MASS
19.3	284.9765	-25.2568	h=14.8, j=15.4, k=14.9	2MASS
19.7	284.9765	-25.2566	B1=18.2, B2=17.6, I=16.4, R1=16.9, R2=16.7	USNO-B1
21.1	284.9793	-25.2596	h=13.3, j=13.7, k=13.3	2MASS

Queried USNO-B1, SDSS, 2MASS.

There are 665 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.