Swift Trigger: 1342439

Presumed name: GRB 250814A

BAT	20^h 25^m 18.96^s, +48° 23′ 27.6″
position:	(306.329, +48.391 ± 180″)
XRT	20^h 25^m 13.92^s, +48° 23′ 56.5″
position:	(306.30802, 48.39903 ± 2.3″)
UVOT	No position available.
Galactic N_HI:	5.06×10²¹ cm^-2
Galactic E(B-V):	1.003 mag

Best RA:	20^h 25^m 13.92^s	= 306.30802 d
Best Dec:	+48° 23′ 56.5″	= 48.39903 d

Gal Lat:	6.08
Gal Long:	85.16

Sun angle:	115.35°, -10.8 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 8 SPER messages, and 1 objects have been found

- Object 1 - enhanced position.
- RA (J2000) : 20 25 13.88 (48.39903)
- Dec (J2000): +48 23 56.5 ( 48.39800)
- Error (90%): 2.2
- Counts in Source: 156

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
113.1	306.2610	48.4027	ZTF J202502.64+482409.7	G=16.829838, g=17.738, r=16.623
119.1	306.3201	48.4311	ZTF J202516.81+482552.1	G=13.988791, H=9.394, J=10.453, K=9.024, g=16.820, r=14.552
146.1	306.3398	48.4337	TYC 3576-1253-1	B=11.73, G=11.186654, H=9.877, J=10.109, K=9.845, V=11.48
150.3	306.2821	48.3610	ZTF J202507.70+482139.5	g=20.065, r=18.923
157.5	306.3455	48.3630	ZTF J202522.90+482146.8	G=19.606800, g=20.995, r=19.661
182.2	306.3249	48.3497	Gaia DR3 2083873601803160832	G=18.588427

There are 6 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
11.2	306.3127	48.3989	B1=19.1, B2=19.9, I=16.6, R1=17.7, R2=17.6	USNO-B1
14.3	306.3135	48.3975	B1=19.6, B2=19.9, I=16.7, R1=17.8, R2=18.0	USNO-B1
14.4	306.3098	48.3952	I=17.9, R2=19.0	USNO-B1
33.9	306.3064	48.3897	B2=20.3, I=17.9, R1=19.0, R2=19.0	USNO-B1
35.5	306.3210	48.4038	I=17.9, R1=19.1, R2=18.4	USNO-B1
37.4	306.3180	48.3910	B1=18.6, B2=19.4, I=16.4, R1=17.2, R2=17.4	USNO-B1
40.9	306.2923	48.4036	B2=20.3, R1=18.4, R2=18.4	USNO-B1
43.7	306.2960	48.4082	B1=19.0, B2=20.1, I=17.3, R1=18.5, R2=18.0	USNO-B1
44.5	306.2972	48.4091	B2=20.3, I=17.2, R2=18.9	USNO-B1
48.6	306.3080	48.3855	B2=20.3, I=17.0, R1=19.0, R2=17.0	USNO-B1

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

There are 242 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
11.3	306.3128	48.3989	h=15.7, j=16.4, k=15.5	2MASS
14.3	306.3134	48.3972	h=15.8, j=16.0, k=15.2	2MASS
22.6	306.3000	48.4024	h=15.0, j=15.8, k=14.9	2MASS
22.9	306.3000	48.4025	B1=17.9, B2=19.0, I=16.4, R1=16.5, R2=17.2	USNO-B1
23.1	306.2984	48.3992	h=15.3, j=15.9, k=14.9	2MASS
23.1	306.2983	48.3992	B1=19.5, B2=20.2, I=16.6, R1=17.6, R2=18.0	USNO-B1
31.7	306.3178	48.4049	h=14.7, j=15.5, k=14.3	2MASS
31.9	306.3178	48.4050	B1=20.2, B2=20.3, I=16.8, R1=18.5, R2=17.4	USNO-B1
33.4	306.2971	48.3932	B1=15.1, B2=16.0, I=13.8, R1=14.1, R2=14.3	USNO-B1
33.5	306.2972	48.3931	h=13.1, j=13.4, k=13.0	2MASS

Queried USNO-B1, SDSS, 2MASS.

There are 552 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.