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Home > GRB region information > 1350381

Swift Trigger: 1350381

Presumed name: GRB 250917B

Back to trigger list.

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

BAT	19h 25m 30.72s, +11° 06′ 46.8″
position:	(291.378, +11.113 ± 180″)
XRT	No position available.
UVOT	No position available.
Galactic NHI:	5.82×1021 cm-2
Galactic E(B-V):	1.897 mag

Best RA:	19h 25m 30.72s	= 291.378 d
Best Dec:	+11° 06′ 46.8″	= +11.113 d
Gal Lat:	-2.38
Gal Long:	46.7
Sun angle:	115.59°, -7.8 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

SPER results page for this trigger.

There are 8 SPER messges, but no object has been found.

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

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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

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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
40.4	291.3666	11.1123	2MASS J19252797+1106442	G=19.024906, J=15.087, K=13.703
56.4	291.3655	11.1227	ZTF J192527.70+110721.7	G=15.233828, H=8.268, J=9.671, K=7.636, g=21.532, r=17.679
77.8	291.3642	11.0961	ZTF J192527.41+110545.9	G=14.940548, H=8.836, J=10.163, K=8.217, g=19.874, r=16.472
96.9	291.4022	11.1258	TYC 1059-210-1	B=12.89, G=12.449678, V=12.41
106.6	291.3747	11.0836	ZTF J192529.93+110500.8	G=15.973228, H=11.672, J=12.580, K=11.345, g=18.494, r=16.250
112.4	291.3462	11.1147	TYC 1059-317-1	B=11.71, G=9.909958, H=7.137, J=7.751, K=6.875, V=10.46
127.6	291.3957	11.1439	ZTF J192534.94+110838.1	G=19.811621, r=19.962
128.9	291.3648	11.0796	Gaia DR3 4315585754663206656	G=20.805321
142.4	291.3395	11.1246	ZTF J192521.47+110728.6	G=15.019763, H=8.298, J=9.650, K=7.644, g=20.918, r=17.331
143.4	291.4113	11.0902	ZTF J192538.70+110524.6	G=13.746448, H=7.638, J=8.960, K=7.059, g=18.822, r=15.569

There are 13 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
5.5	291.3779	11.1144			NED
7.6	291.3758	11.1128			NED
8.9	291.3804	11.1122			NED
9.0	291.3804	11.1122		I=16.5, R1=17.6, R2=17.6	USNO-B1
11.1	291.3804	11.1108			NED
11.7	291.3783	11.1097			NED
11.7	291.3804	11.1108		B2=19.5, R1=16.1, R2=15.9	USNO-B1
11.8	291.3813	11.1134		I=17.3, R2=17.8	USNO-B1
12.1	291.3804	11.1108			NED
12.2	291.3813	11.1133			NED

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

There are 1032 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
5.5	291.3778	11.1145	h=15.5, j=16.2, k=15.5	2MASS
7.6	291.3759	11.1127	h=15.6, j=16.4, k=15.1	2MASS
8.9	291.3804	11.1123	h=13.3, j=14.4, k=13.0	2MASS
11.1	291.3803	11.1109	h=12.5, j=13.7, k=12.2	2MASS
11.7	291.3786	11.1098	h=15.4, j=15.9, k=15.0	2MASS
11.8	291.3785	11.1098	B2=19.5, I=17.3, R1=18.5, R2=17.5	USNO-B1
12.2	291.3814	11.1134	h=13.7, j=14.8, k=13.3	2MASS
15.0	291.3814	11.1105	h=12.6, j=13.6, k=12.3	2MASS
15.2	291.3805	11.1096	B2=19.3, I=15.4, R1=16.8, R2=16.2	USNO-B1
16.0	291.3806	11.1093	h=13.9, j=14.8, k=13.6	2MASS

Queried USNO-B1, SDSS, 2MASS.

There are 925 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.