Swift Trigger: 1145959

Presumed name: GRB 221226B

BAT	01^h 31^m 40.08^s, -41° 33′ 14.4″
position:	(22.917, -41.554 ± 180″)
XRT	01^h 31^m 38.14^s, -41° 31′ 35.3″
position:	(22.90890, -41.52648 ± 3.5″)
UVOT	No position available.
Galactic N_HI:	1.61×10²⁰ cm^-2
Galactic E(B-V):	0.017 mag

Best RA:	01^h 31^m 38.14^s	= 22.90890 d
Best Dec:	-41° 31′ 35.3″	= -41.52648 d

Gal Lat:	-73.41
Gal Long:	275.7

Sun angle:	86.88°, -7.2 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 3 SPER messages, and 1 objects have been found

- Object 1
- RA (J2000) : 01 31 38.14 ( 22.90890)
- Dec (J2000): -41 31 35.3 ( -41.52648)
- Error (90%): 3.500"
- Counts in Source: 72

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	Source	Misc
0.0′′	22.90890	-41.52648	GCN #33108	GRB 221226B: Swift detection of a burst
2.3′′	22.90971	-41.52669	GCN #33109	GRB 221226B: Enhanced Swift-XRT position
44.3′′	22.90300	-41.51500	GCN #33115	GRB 221226B Swift-BAT refined analysis
101.4′′	22.91700	-41.55400	GCN #33106	Swift GRB221226.95: Global MASTER-Net observations report

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
13.8	22.9125	-41.5292	6dFGS gJ013139.1-413144	B=18.10, R=17.15
42.5	22.8944	-41.5312	ESO 296-37	B=15.92, H=13.499, J=14.045, K=13.462, R=14.97
142.7	22.9195	-41.4876	LCRS B012929.7-414440
196.6	22.8638	-41.5694	LEDA 574308

There are 4 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
13.4	22.9125	-41.5290		B=18.1, R2=16.6, i=17.1	SSS
13.6	22.9125	-41.5289	0.018296	Mag=18.14	NED
18.0	22.9083	-41.5214			NED
18.2	22.9133	-41.5303			NED
20.0	22.9141	-41.5304		R1=19.8, R2=23.4	USNO-B1
35.6	22.8979	-41.5319			NED
42.6	22.8944	-41.5312		h=13.6, j=14.4, k=13.7	2MASS
42.6	22.8942	-41.5311	0.021125	Mag=15.92	NED
43.0	22.8943	-41.5314		B=15.7, R2=14.4, i=14.8	SSS
44.8	22.9071	-41.5389			NED

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

There are 226 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
13.2	22.9125	-41.5290	B2=16.8, I=16.6, R1=15.2, R2=24.8	USNO-B1
41.2	22.8937	-41.5273	I=18.9, R1=16.8, R2=25.3	USNO-B1
42.0	22.8933	-41.5259	I=18.9, R1=13.6, R2=25.0	USNO-B1
42.2	22.8932	-41.5262	I=18.8, R1=17.3, R2=16.9	USNO-B1
42.4	22.8934	-41.5286	I=18.8, R1=15.2, R2=14.3	USNO-B1
42.5	22.8944	-41.5311	h=15.5, j=16.2, k=14.2	2MASS
42.5	22.8944	-41.5310	B2=13.5, I=13.3, R1=11.4, R2=14.1	USNO-B1
42.6	22.8940	-41.5306	B2=11.8, I=15.6	USNO-B1
43.0	22.8946	-41.5319	h=15.6, j=15.1, k=14.3	2MASS
43.2	22.8929	-41.5259	I=18.0, R1=17.3, R2=17.8	USNO-B1

Queried USNO-B1, SDSS, 2MASS.

There are 91 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.