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Home > GRB region information > 769177

Swift Trigger: 769177

Presumed name: GRB 170823A

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Related pages: XRT Catalogue entry | Download obs data | GCN Notices

BAT	12h 34m 52.56s, +35° 34′ 55.2″
position:	(188.719, 35.582 ± 180″)
XRT	No position available.
UVOT	No position available.
Galactic NHI:	1.23×100 cm-2
Galactic E(B-V):	0.012 mag

Best RA:	12h 34m 52.56s	= 188.719 d
Best Dec:	+35° 34′ 55.2″	= 35.582 d
Gal Lat:	80.84
Gal Long:	144.57
Sun angle:	40.62°, -2.4 hr East of Sun

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GCN Notices for this burst.

View this region in Aladin.

Observability of this burst for Swift.

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Sun angle for this burst.

UVOT data

No UVOT images are currently available.

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XRT SPER data

No SPER data received yet. Refresh this page to check again.

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Known transients within 5′ of the GRB

Click on the offset to view the transient announcement.

Offset (′′)	RA	Dec	Date reported	Source	Misc	Query
0.0′′	188.71900	35.58200		GCN #21666	GRB 170823A: Swift detection of a burst
118.5′′	188.71292	35.54944		GCN #21678	GRB 170823A: Swift-BAT refined analysis

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Catalogue Searches. Searched 3.33′ 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
58.6	188.7143	35.5662	87GB 123224.0+355039	B=21.10, V=20.79, g=20.548, i=20.095, r=20.463, u=21.286, z=20.057
83.0	188.7073	35.5610	SDSS J123449.74+353339.6	g=21.8, i=18.95, r=19.94, u=23.6, z=18.60
90.2	188.7125	35.5575	[OCL83] 1232+358
127.2	188.6772	35.5724	[SPD2011] 17994
129.9	188.6881	35.5561	SDSS J123445.14+353322.1	g=21.01, i=20.39, r=20.42, u=21.4, z=20.1
149.3	188.6694	35.5723	SDSS J123440.66+353420.3	g=22.3, i=19.64, r=20.59, u=24.3, z=19.09
187.7	188.7748	35.5564	NGP9 F268-0939754

There are 7 SIMBAD objects within the position error. The full list is here.

* 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*	Redshift		Catalogue	Query
10.1	188.7159	35.5807		R=22.1, g=23.7, i=22.0, u=22.7, z=21.1	SDSS
10.1	188.7158	35.5808		Mag=23.7	NED
12.1	188.7208	35.5790		h=0.0, j=0.0, k=22.8	2MASS
16.3	188.7228	35.5853		R=20.9, g=21.9, i=20.3, u=22.1, z=20.2	SDSS
17.2	188.7184	35.5773		h=23.1, j=25.4, k=21.8	2MASS
17.3	188.7184	35.5772		h=24.1, j=23.3, k=22.0	2MASS
17.3	188.7183	35.5772		Mag=24.1	NED
24.7	188.7163	35.5886		Mag=21.9	NED
24.7	188.7163	35.5885		R=21.6, g=21.9, i=21.2, u=22.8, z=20.5	SDSS
26.4	188.7264	35.5778		R=20.9, g=22.3, i=20.1, u=26.6, z=19.8	SDSS

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

There are 653 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	Query
12.1	188.7208	35.5790	R=22.8	SDSS
17.2	188.7184	35.5773	I=20.4, R=21.8, g=23.1, u=25.4, z=19.5	SDSS
17.3	188.7184	35.5772	I=20.7, R=22.0, g=24.1, u=23.3, z=19.9	SDSS
34.1	188.7281	35.5879	I=18.4, R=19.4, g=20.9, u=23.7, z=17.8	SDSS
34.3	188.7280	35.5881	h=16.1, j=16.6, k=15.5	2MASS
34.7	188.7260	35.5742	I=21.7, R=21.5, g=21.9, u=21.8, z=21.4	SDSS
37.8	188.7319	35.5826	I=19.0, R1=19.5, R2=20.5	USNO-B1
38.3	188.7319	35.5838	I=20.9, R=21.8, g=23.3, u=23.6, z=20.4	SDSS
39.0	188.7276	35.5738	B1=20.7, B2=20.9, R2=20.7	USNO-B1
40.6	188.7328	35.5813	B2=21.5, I=18.9, R1=19.3, R2=19.8	USNO-B1

Queried USNO-B1, SDSS, 2MASS.

There are 153 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.