Swift Trigger: 1056426

Presumed name: GRB 210618A

BAT	15^h 43^m 16.80^s, +46° 02′ 34.8″
position:	(235.820, +46.043 ± 180″)
XRT	No position available.
UVOT	No position available.
Galactic N_HI:	1.27×10²⁰ cm^-2
Galactic E(B-V):	0.015 mag

Best RA:	15^h 43^m 16.80^s	= 235.820 d
Best Dec:	+46° 02′ 34.8″	= +46.043 d

Gal Lat:	51.29
Gal Long:	73.78

Sun angle:	105.20°, -9.9 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 7 SPER messges, but no object has been found.

See the SPER page for details of how the SPER image is searched for objects.

Known transients within 5′ of the GRB

Click on the offset to view the transient announcement.

Offset (′′)	RA	Dec	Source	Misc
0.0′′	235.82000	46.04300	GCN #30249	Swift GRB210618.07: Global MASTER-Net observations report
0.0′′	235.82000	46.04300	GCN #30250	GRB 210618A: Swift detection of a burst
156.6′′	235.76979	46.06906	GCN #30312	GRB 210618A: Swift-XRT afterglow detection
174.9′′	235.76333	46.07153	GCN #30254	GRB 210618A: Swift-BAT refined analysis

Catalogue Searches. Searched 200′ around BAT 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
12.1	235.8184	46.0462	R=21.7, g=23.1, i=21.1, u=23.7, z=20.7	SDSS
12.1	235.8183	46.0461	Mag=23.5	NED
13.3	235.8153	46.0447	R=22.1, g=22.7, i=21.7, u=23.6, z=21.0	SDSS
13.3	235.8150	46.0447	Mag=22.9	NED
13.3	235.8153	46.0447	R=22.1, g=22.8, i=21.6, u=22.4, z=20.6	SDSS
16.4	235.8158	46.0394	Mag=22.5	NED
16.4	235.8159	46.0395	R=21.8, g=22.3, i=21.7, u=22.3, z=21.5	SDSS
18.2	235.8261	46.0458	R=23.0, g=23.0, i=22.0, u=25.3, z=22.6	SDSS
18.4	235.8257	46.0462	B=21.8, R=20.0	APM-N
23.0	235.8288	46.0408		NED

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

There are 640 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
5.9	235.8183	46.0441	I=21.9, R=23.1, g=23.6, u=23.6, z=21.6	SDSS
12.1	235.8184	46.0462	I=21.4, R=22.6, g=23.5, u=23.9, z=20.9	SDSS
16.4	235.8160	46.0394	I=22.2, R=22.4, g=23.1, u=23.0, z=21.4	SDSS
20.4	235.8120	46.0439	I=24.3, R=24.9, g=25.2, u=24.2, z=21.3	SDSS
26.6	235.8294	46.0396	I=21.1, R=21.8, g=23.1, u=23.1, z=21.0	SDSS
26.7	235.8295	46.0396	I=21.0, R=21.6, g=24.1, u=25.8, z=20.8	SDSS
26.9	235.8282	46.0381	I=22.1, R=25.5, g=26.5, u=26.1, z=21.8	SDSS
29.6	235.8108	46.0482	I=22.2, R=24.8, g=25.5, u=25.8, z=22.7	SDSS
31.2	235.8109	46.0489	I=23.2, R=23.0, g=24.3, u=23.7, z=22.7	SDSS
38.0	235.8297	46.0349	I=21.2, R=21.6, g=22.6, u=24.6, z=20.8	SDSS

Queried USNO-B1, SDSS, 2MASS.

There are 306 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.