Swift Trigger: 431764

Presumed name: GRB 100816A

BAT	23^h 26^m 57.84^s, +26° 33′ 37.8″
position:	(351.741, 26.5605 ± 180″)
XRT	23^h 26^m 57.65^s, +26° 34′ 44.0″
position:	(351.7402, 26.5789 ± 2.1″)
UVOT	No position available.
Galactic N_HI:	0.00×10⁰ cm^-2
Galactic E(B-V):	0.086 mag

Best RA:	23^h 26^m 57.65^s	= 351.7402 d
Best Dec:	+26° 34′ 44.0″	= 26.5789 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′′	351.74010	26.57887	GCN #11110	GRB 100816A: Enhanced Swift-XRT position
1.6′′	351.73992	26.57853	GCN #11104	GRB100816A: TNG optical afterglow confirmation.
1.6′′	351.73983	26.57858	GCN #11102	GRB 100816A: Swift detection of a possibly short burst with optical afterglow
2.9′′	351.73971	26.57822	GCN #11108	GRB 100816A: CQUEAN riz-band Detection� Host Galaxy?
39.9′′	351.73800	26.56800	GCN #11111	GRB 100816A� 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
1.9	351.7398	26.5785	GRB 100816A
169.0	351.6951	26.6029	2MASX J23264681+2636104	B=15.5, H=12.637, J=13.536, K=12.481

* 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
1.6	351.7396	26.5786		NED
34.1	351.7378	26.5697	B2=21.2, R2=20.6	USNO-B1
91.4	351.7302	26.5551	B2=20.3, R1=19.5, R2=18.9	USNO-B1
94.9	351.7361	26.5528	B=14.8, R=13.5	APM-N
106.4	351.7072	26.5792	B=21.3, R=20.0	APM-N
107.2	351.7180	26.6011	B1=16.3, I=15.5, R1=16.8, R2=15.3	USNO-B1
109.2	351.7173	26.6012	B=16.8, R=16.4	APM-N
111.1	351.7165	26.6013	B1=16.9, I=16.7	USNO-B1
114.1	351.7733	26.5902	B=21.3, R=20.0	APM-N
115.1	351.7156	26.6021	B1=18.2, I=17.4, R1=17.3	USNO-B1

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

There are 43 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
23.0	351.7338	26.5761	h=16.2, j=16.6, k=15.8	2MASS
23.1	351.7337	26.5761	B1=18.0, B2=18.1, I=17.0, R1=17.1, R2=17.2	USNO-B1
23.3	351.7463	26.5824	B1=20.0, R2=20.8	USNO-B1
42.3	351.7520	26.5840	B1=20.0, B2=21.1, R2=20.2	USNO-B1
42.7	351.7534	26.5778	h=15.1, j=15.8, k=15.0	2MASS
43.0	351.7535	26.5778	B1=17.7, B2=17.9, I=16.6, R1=16.9, R2=16.7	USNO-B1
49.5	351.7265	26.5851	h=13.3, j=13.6, k=13.2	2MASS
49.5	351.7264	26.5851	B1=15.4, B2=15.6, I=14.1, R1=14.5, R2=14.6	USNO-B1
50.0	351.7283	26.5879	B1=19.5, B2=19.1, I=18.1, R1=18.8, R2=18.1	USNO-B1
51.6	351.7540	26.5716	B1=20.0, B2=20.6, I=18.8, R1=19.3, R2=19.4	USNO-B1

Queried USNO-B1, SDSS, 2MASS.

There are 145 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.