Swift Trigger: 1075565

Presumed name: GRB 210930A

BAT	13^h 09^m 44.40^s, +48° 37′ 22.8″
position:	(197.435, +48.623 ± 180″)
XRT	13^h 09^m 36.44^s, +48° 37′ 42.7″
position:	(197.40185, 48.62853 ± 3.8″)
UVOT	No position available.
Galactic N_HI:	9.30×10¹⁹ cm^-2
Galactic E(B-V):	0.010 mag

Best RA:	13^h 09^m 36.44^s	= 197.40185 d
Best Dec:	+48° 37′ 42.7″	= 48.62853 d

Gal Lat:	68.21
Gal Long:	114.82

Sun angle:	52.25°, -0.7 hr East of Sun

GCN Notices for this burst.

View this region in Aladin.

Observability of this burst for Swift.

Sun angle for this burst.

UVOT data

No UVOT images are currently available.

XRT SPER data

SPER results page for this trigger.

There are 11 SPER messages, and 1 objects have been found

- Object 1
- RA (J2000) : 13 09 36.48 ( 197.40198)
- Dec (J2000): +48 37 43.0 ( 48.62861)
- Error (90%): 3.674"
- Counts in Source: 127

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′′	197.40185	48.62853	GCN #30897	GRB 210930A: Swift detection of a burst
0.1′′	197.40187	48.62856	GCN #30900	GRB 210930A: Enhanced Swift-XRT position
30.6′′	197.41458	48.62975	GCN #30917	GRB 210930A: Swift-BAT refined analysis

Catalogue Searches. Searched 200′ 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

* 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
9.3	197.3992	48.6264	Mag=22.3	NED
9.3	197.3994	48.6265	R=21.3, g=22.3, i=20.9, u=23.1, z=20.5	SDSS
10.7	197.4046	48.6309	R=24.4, g=25.2, i=25.2, u=23.0, z=19.8	SDSS
13.0	197.3975	48.6308	Mag=19.9	NED
13.0	197.3978	48.6309	R=19.2, g=20.1, i=18.9, u=21.3, z=18.6	SDSS
13.5	197.3976	48.6311	B=20.7, R=18.9	APM-N
19.7	197.4021	48.6339	Mag=22.6	NED
23.3	197.3949	48.6331	R=22.8, g=24.9, i=21.5, u=24.4, z=20.9	SDSS
28.3	197.4112	48.6239		NED
29.0	197.4137	48.6275	Mag=23.5	NED

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
13.1	197.3978	48.6310	B1=20.6, B2=20.1, I=18.7, R1=19.4, R2=18.7	USNO-B1
19.7	197.4022	48.6340	I=21.6, R=21.8, g=22.6, u=24.9, z=22.1	SDSS
29.0	197.4140	48.6276	I=22.7, R=22.7, g=23.5, u=24.2, z=22.1	SDSS
35.9	197.3936	48.6202	B1=19.6, B2=18.9, I=18.6, R1=18.9, R2=18.6	USNO-B1
36.1	197.3937	48.6201	I=18.4, R=18.5, g=18.9, u=19.7, z=18.3	SDSS
39.8	197.3864	48.6328	I=24.8, R=25.1, g=25.2, u=25.3, z=20.6	SDSS
43.4	197.3856	48.6340	I=22.1, R=22.5, g=23.3, u=24.0, z=22.6	SDSS
47.7	197.4211	48.6249	I=24.1, R=24.1, g=26.1, u=24.2, z=20.8	SDSS
49.7	197.3912	48.6404	I=21.8, R=24.3, g=25.3, u=24.2, z=23.4	SDSS
51.4	197.4117	48.6158	B2=21.8, R1=19.3	USNO-B1

Queried USNO-B1, SDSS, 2MASS.

There are 132 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.