Swift Trigger: 1351039

Presumed name: GRB 250920C

BAT	03^h 25^m 50.16^s, -29° 38′ 45.6″
position:	(51.459, -29.646 ± 180″)
XRT	03^h 25^m 51.46^s, -29° 39′ 23.8″
position:	(51.4644, -29.6566 ± 5.3″)
UVOT	No position available.
Galactic N_HI:	1.34×10²⁰ cm^-2
Galactic E(B-V):	0.015 mag

Best RA:	03^h 25^m 51.46^s	= 51.4644 d
Best Dec:	-29° 39′ 23.8″	= -29.6566 d

Gal Lat:	-56.1
Gal Long:	226.49

Sun angle:	121.52°, 8.4 hr West

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.

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

Known transients within 5′ of the GRB

Click on the offset to view the transient announcement.

Offset (′′)	RA	Dec	Date reported	Source	Misc	Query

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
32.9	51.4731	-29.6617	WISE J032553.52-293942.1	G=20.290291
48.2	51.4589	-29.6441	ATO J051.4588-29.6440	B=16.042, G=15.090920, H=13.386, J=13.836, K=13.273, R=15.624, V=15.292, g=15.623, i=14.863, r=15.083
51.1	51.4496	-29.6507	2dFGRS TGS400Z102	B=19.403, G=20.865734, R=18.097
60.7	51.4452	-29.6592	2dFGRS TGS321Z285	B=17.900, G=20.465343, R=16.460
72.2	51.4698	-29.6761	2dFGRS TGS400Z099	B=19.359, R=17.876
87.4	51.4914	-29.6502	2dFGRS TGS400Z095	B=19.061, R=17.516
147.7	51.5088	-29.6426	Gaia DR3 5056818902886359040	G=19.679867

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*		Catalogue
19.3	51.4621	-29.6617		NED
21.0	51.4588	-29.6534	B=20.2, R2=18.5, i=18.1	SSS
21.1	51.4588	-29.6533		NED
22.1	51.4586	-29.6531	B1=23.1, B2=20.0, I=18.4, R2=19.1	USNO-B1
31.1	51.4742	-29.6556		NED
32.0	51.4542	-29.6544		NED
32.7	51.4730	-29.6617	B=19.4, R2=17.9, i=17.2	SSS
32.8	51.4729	-29.6617	Mag=19.56	NED
37.3	51.4662	-29.6464		NED
39.2	51.4617	-29.6672		NED

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

There are 439 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
7.8	51.4619	-29.6570	I=17.4, R1=20.0	USNO-B1
32.7	51.4730	-29.6617	B1=20.4, B2=19.2, I=17.6, R1=17.8, R2=17.7	USNO-B1
32.9	51.4731	-29.6618	h=15.5, j=16.3, k=14.9	2MASS
39.9	51.4539	-29.6504	B2=18.8, R1=19.3	USNO-B1
48.3	51.4589	-29.6441	h=13.4, j=13.8, k=13.3	2MASS
48.4	51.4588	-29.6441	B1=16.0, B2=15.9, I=14.3, R1=14.6, R2=14.9	USNO-B1
49.0	51.4681	-29.6434	h=15.0, j=15.7, k=14.9	2MASS
49.1	51.4681	-29.6434	B1=20.8, B2=20.0, I=17.3, R1=18.4, R2=18.8	USNO-B1
51.1	51.4496	-29.6507	h=16.0, j=16.4, k=15.6	2MASS
51.5	51.4495	-29.6506	B1=20.4, B2=19.0, I=17.6, R1=18.4, R2=18.1	USNO-B1

Queried USNO-B1, SDSS, 2MASS.

There are 98 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.