Swift Trigger: 767284

Presumed name: GRB 170810A

BAT	12^h 31^m 48.00^s, +03° 38′ 49.2″
position:	(187.950, +3.647 ± 180″)
XRT	12^h 31^m 45.34^s, +03° 39′ 37.1″
position:	(187.9389, 3.6603 ± 2.1″)
UVOT	12^h 31^m 45.31^s, +03° 39′ 38.9″
position:	(187.9388, +3.6608 ± 1.1″)
Galactic N_HI:	2.07×10⁰ cm^-2
Galactic E(B-V):	0.024 mag

Best RA:	12^h 31^m 45.31^s	= 187.9388 d
Best Dec:	+03° 39′ 38.9″	= +3.6608 d

Gal Lat:	66.07
Gal Long:	290.75

Sun angle:	47.98°, -3.2 hr East of Sun

¹Sper #3 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 4 SPER messages, and 1 objects have been found

- Object 1 - enhanced position.
- RA (J2000) : 12 31 45.33 (3.6603)
- Dec (J2000): +03 39 37.0 ( 3.66158)
- Error (90%): 2.1
- Counts in Source: 436

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′′	187.93879	3.66081	GCN #21450	GRB 170810A: Swift detection of a burst with a bright optical counterpart
0.3′′	187.93887	3.66081	GCN #21454	GRB 170810A: Swift/UVOT Detection
0.3′′	187.93877	3.66071	GCN #21449	GRB 170810A: MASTER-NET very bright OT detection
0.6′′	187.93894	3.66072	GCN #21492	GRB 170810A: VLA Detection
1.0′′	187.93852	3.66084	GCN #21451	GRB 170810A: Enhanced Swift-XRT position
39.2′′	187.92833	3.66383	GCN #21458	GRB 170810A: Swift-BAT refined analysis

There are 12 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
84.4	187.9622	3.6573	[VV2006] J123151.0+033926	B=19.70, V=19.50, g=19.393, i=19.239, r=19.376, u=19.52, z=19.26

* 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
13.9	187.9400	3.6572	Mag=23.7	NED
18.6	187.9338	3.6614	Mag=20.3	NED
18.7	187.9343	3.6578	R=19.3, g=20.5, i=19.0, u=21.3, z=18.8	SDSS
18.9	187.9342	3.6578	B2=20.9, I=18.2, R1=19.3, R2=18.9	USNO-B1
19.2	187.9337	3.6613	R=19.3, g=20.3, i=18.9, u=21.1, z=18.5	SDSS
19.3	187.9342	3.6578	Mag=20.3	NED
22.3	187.9392	3.6669	Mag=21.4	NED
24.1	187.9394	3.6670	R=20.5, g=21.7, i=20.2, u=22.2, z=19.5	SDSS
27.8	187.9321	3.6639	R=22.4, g=23.0, i=21.6, u=25.3, z=22.6	SDSS
29.5	187.9417	3.6526	R=22.7, g=24.7, i=21.6, u=23.7, z=21.6	SDSS

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

There are 327 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
12.1	187.9402	3.6572	I=21.5, R=22.1, g=23.9, u=24.8, z=20.7	SDSS
17.8	187.9346	3.6579	B2=20.6, R2=19.2	USNO-B1
19.3	187.9336	3.6614	B2=20.5, I=18.4, R1=19.0, R2=19.3	USNO-B1
23.7	187.9380	3.6668	B1=20.7, B2=21.6, I=18.8	USNO-B1
27.1	187.9456	3.6637	I=21.9, R=23.6, g=24.3, u=24.3, z=21.1	SDSS
29.4	187.9309	3.6586	I=19.0, R=19.1, g=19.5, u=20.4, z=18.9	SDSS
36.7	187.9484	3.6641	I=21.3, R=21.4, g=21.8, u=22.9, z=21.0	SDSS
37.4	187.9343	3.6696	B2=21.9, R1=19.3, R2=20.6	USNO-B1
42.8	187.9285	3.6660	I=20.3, R=21.9, g=23.3, u=23.2, z=19.5	SDSS
42.9	187.9392	3.6722	I=21.6, R=23.0, g=25.3, u=25.2, z=20.8	SDSS

Queried USNO-B1, SDSS, 2MASS.

There are 137 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.