Swift Trigger: 1351790

Presumed name: GRB 250924A

BAT	03^h 27^m 27.60^s, +74° 39′ 07.2″
position:	(51.865, +74.652 ± 180″)
XRT	03^h 27^m 29.35^s, +74° 39′ 32.9″
position:	(51.87231, 74.65914 ± 2.2″)
UVOT	03^h 27^m 29.59^s, +74° 39′ 33.8″
position:	(51.8733, +74.6594 ± 0.6″)
Galactic N_HI:	1.62×10²¹ cm^-2
Galactic E(B-V):	0.311 mag

Best RA:	03^h 27^m 29.59^s	= 51.8733 d
Best Dec:	+74° 39′ 33.8″	= +74.6594 d

Gal Lat:	14.88
Gal Long:	132.85

Sun angle:	100.10°, 8.6 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.

There are 8 SPER messages, and 1 objects have been found

- Object 1 - enhanced position.
- RA (J2000) : 03 27 29.40 (74.65930)
- Dec (J2000): +74 39 33.5 ( 74.65907)
- Error (90%): 2.1
- Counts in Source: 376

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	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		Query
80.1	51.9539	74.6646	ZTF J032748.91+743952.6	B=12.34, G=11.879485, H=10.753, J=10.903, K=10.705, V=12.01, g=12.315
134.5	51.8418	74.6227	TYC 4338-1472-1	B=13.51, G=10.570361, H=6.954, J=7.866, K=6.715, V=11.57

* 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
55.8	51.9270	74.6535	B1=17.2, B2=16.9, I=15.6, R1=16.1, R2=15.8	USNO-B1
61.9	51.8433	74.6437	I=18.2, R1=19.0, R2=19.1	USNO-B1
87.4	51.8051	74.6757	B1=19.5, B2=18.4, I=17.3, R1=17.6, R2=17.4	USNO-B1
99.8	51.9673	74.6709	B2=20.3, I=18.4, R1=19.1, R2=18.9	USNO-B1
109.8	51.9367	74.6338	B1=19.1, B2=18.1, I=17.0, R1=17.2, R2=17.1	USNO-B1
110.0	51.7583	74.6640	B1=20.5, B2=21.0, I=17.5, R2=18.9	USNO-B1
116.5	51.8407	74.6279	I=18.4, R2=18.8	USNO-B1
119.5	51.7749	74.6382	I=18.7, R2=19.3	USNO-B1
122.4	51.7995	74.6311	B1=19.7, B2=18.6, I=17.5, R1=18.1, R2=17.9	USNO-B1
122.5	51.8417	74.6261	I=17.8, R2=18.4	USNO-B1

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

There are 18 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
19.7	51.8841	74.6636	h=15.0, j=15.5, k=14.7	2MASS
19.9	51.8840	74.6637	B1=19.2, B2=18.4, I=16.5, R1=16.9, R2=17.0	USNO-B1
22.1	51.8547	74.6552	h=14.2, j=14.7, k=14.1	2MASS
22.3	51.8548	74.6550	B1=17.9, B2=17.2, I=14.9, R1=15.6, R2=15.5	USNO-B1
24.1	51.8568	74.6539	B1=18.0, B2=16.5, I=14.8, R1=15.6	USNO-B1
24.5	51.8571	74.6536	h=14.2, j=14.7, k=14.1	2MASS
32.8	51.8496	74.6523	B2=20.8, I=18.4, R1=19.5, R2=19.2	USNO-B1
37.4	51.8559	74.6497	B1=20.9, B2=19.9, I=18.4, R1=19.0, R2=18.7	USNO-B1
43.6	51.8294	74.6634	h=16.2, j=16.9, k=15.8	2MASS
43.6	51.8467	74.6692	B1=20.8, B2=19.7, I=17.7, R1=18.5, R2=18.5	USNO-B1

Queried USNO-B1, SDSS, 2MASS.

There are 266 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.