Swift Trigger: 843122

Presumed name: GRB 180620A

BAT	18^h 39^m 31.92^s, +23° 15′ 54.0″
position:	(279.883, 23.265 ± 180″)
XRT	18^h 39^m 34.97^s, +23° 14′ 38.8″
position:	(279.8957, 23.2441 ± 2.0″)
UVOT	18^h 39^m 35.06^s, +23° 14′ 39.5″
position:	(279.8961, +23.2443 ± 1.1″)
Galactic N_HI:	1.07×10⁰ cm^-2
Galactic E(B-V):	0.143 mag

Best RA:	18^h 39^m 35.06^s	= 279.8961 d
Best Dec:	+23° 14′ 39.5″	= +23.2443 d

Gal Lat:	12.84
Gal Long:	52.69

Sun angle:	132.04°, 11.3 hr West

¹Sper #7 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

No UVOT images are currently available.

XRT SPER data

SPER results page for this trigger.

There are 14 SPER messages, and 1 objects have been found

- Object 1 - enhanced position.
- RA (J2000) : 18 39 35.00 (23.2441)
- Dec (J2000): +23 14 38.7 ( 23.24350)
- Error (90%): 2.0
- Counts in Source: 892

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
0.3′′	279.89617	23.24436	GCN #22798	GRB 180620A: Swift detection of a burst with an optical counterpart
0.5′′	279.89621	23.24419	GCN #22805	GRB 180620A: Swift/UVOT Detection
0.6′′	279.89621	23.24417	GCN #22800	GRB 180620A: ISON-MN afterglow confirmation
1.3′′	279.89646	23.24417	GCN #22802	GRB 180620A: Enhanced Swift-XRT position
27.8′′	279.89000	23.23900	GCN #22815	GRB 180620A: 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
50.2	279.9108	23.2427	HD 342692	B=12.56, G=11.319, H=9.809, J=10.123, K=9.721, V=11.67
151.2	279.8662	23.2762	HD 342691	B=12.01, G=10.487, H=8.342, J=8.854, K=8.245, V=10.99

* 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
11.5	279.8922	23.2442	B1=18.0, B2=17.5, I=16.2, R1=16.6, R2=16.6	USNO-B1
12.8	279.8921	23.2442		NED
16.1	279.8996	23.2467	B1=19.9, B2=19.4, I=18.4, R1=19.0, R2=19.2	USNO-B1
28.2	279.8905	23.2379	B2=20.9, I=18.6, R2=18.4	USNO-B1
29.9	279.9001	23.2513	I=17.9, R2=19.4	USNO-B1
42.8	279.8828	23.2434	I=16.8, R2=19.6	USNO-B1
43.1	279.8903	23.2332	B1=20.1, B2=20.3, R1=19.1, R2=19.4	USNO-B1
46.0	279.8968	23.2313	B2=21.7, R2=20.4	USNO-B1
47.1	279.8837	23.2371	B1=20.5, B2=21.0, R2=20.3	USNO-B1
48.2	279.8985	23.2573	B2=21.4, R2=20.3	USNO-B1

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

There are 189 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
10.6	279.8989	23.2436	B1=19.7, B2=18.9, I=17.8, R1=18.5, R2=18.2	USNO-B1
11.4	279.8923	23.2441	h=15.2, j=15.6, k=15.2	2MASS
15.4	279.8957	23.2484	B1=20.8, B2=20.4, I=18.7, R1=19.4, R2=19.9	USNO-B1
19.7	279.9003	23.2406	h=16.0, j=16.5, k=15.8	2MASS
19.7	279.9003	23.2406	B1=19.4, B2=18.6, I=17.5, R1=18.0, R2=18.0	USNO-B1
22.4	279.8932	23.2499	B1=20.3, B2=19.8, I=18.7, R1=19.1, R2=19.3	USNO-B1
22.7	279.9025	23.2445	B1=20.2, B2=19.8, R1=19.5, R2=19.0	USNO-B1
25.1	279.9012	23.2393	B1=19.2, B2=19.1, I=18.3, R1=18.6, R2=18.6	USNO-B1
26.7	279.8920	23.2375	B1=20.4, B2=19.2, R1=18.9, R2=18.7	USNO-B1
26.7	279.8925	23.2373	B1=20.4, B2=18.6, I=17.5, R1=18.7, R2=17.2	USNO-B1

Queried USNO-B1, SDSS, 2MASS.

There are 496 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.