Swift Trigger: 1277428

Presumed name: GRB 241229B

BAT	18^h 16^m 35.76^s, +74° 42′ 50.4″
position:	(274.149, +74.714 ± 180″)
XRT	No position available.
UVOT	No position available.
Galactic N_HI:	5.40×10²⁰ cm^-2
Galactic E(B-V):	0.063 mag

Best RA:	18^h 16^m 35.76^s	= 274.149 d
Best Dec:	+74° 42′ 50.4″	= +74.714 d

Gal Lat:	28.38
Gal Long:	105.7

Sun angle:	97.97°, 0.3 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

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 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
138.0	274.0344	74.7376	2MASS J18160828+7444154	B=16.2, G=15.635728, H=14.153, J=14.539, K=14.295, R=15.5
141.6	274.2945	74.7227	TYC 4441-1093-1	B=12.25, G=11.608439, H=10.444, J=10.700, K=10.401, R=11.8, V=11.67
148.0	274.2950	74.6996	2MASS J18171078+7441583	B=15.7, G=14.510828, H=12.352, J=12.902, K=12.261, R=14.4
151.1	274.0080	74.7336	2MASS J18160193+7444008	B=15.6, G=14.828978, H=13.313, J=13.662, K=13.263, R=14.8
177.5	274.1291	74.6650	2MASS J18163099+7439538	B=16.2, G=15.581282, H=14.171, J=14.514, K=14.113, R=15.7
183.4	274.0840	74.6660	2MASS J18162014+7439577	B=16.1, G=15.054189, H=13.141, J=13.595, K=13.000, R=15.1
185.6	273.9591	74.7018	2MASS J18155020+7442064	B=15.8, G=15.237247, H=13.857, J=14.155, K=13.791, R=15.1

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
167.9	274.3220	74.7043	0.0169766 +/- 0.00314041	XMM-NEWTON
168.6	274.3227	74.7043	0.019084 +/- 0.00190914	XMM-NEWTON
168.8	274.3228	74.7041	0.0383822 +/- 0.00834691	XMM-NEWTON
169.0	274.3232	74.7044	0.0252261 +/- 0.00489223	XMM-NEWTON
171.5	274.3262	74.7048	0.0173812 +/- 0.00328385	XMM-NEWTON

Queried the X-ray MASTER catalogue.

There are 5 X-ray sources within the position error. The full list is here.

* RA/Dec in equinox J2000

¹Energy band for count-rate is mission specific.

Galaxies

	RA*	Dec*		Catalogue
13.0	274.1617	74.7150		NED
14.8	274.1350	74.7158		NED
17.8	274.1479	74.7092		NED
18.9	274.1350	74.7103		NED
19.6	274.1650	74.7106		NED
22.4	274.1524	74.7078	I=18.6, R2=19.6	USNO-B1
24.9	274.1300	74.7189		NED
34.1	274.1646	74.7225		NED
38.2	274.1871	74.7106		NED
41.4	274.1637	74.7031		NED

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

There are 236 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
17.7	274.1476	74.7091	B1=20.6, B2=20.3, I=18.4, R1=19.1, R2=19.0	USNO-B1
43.8	274.1179	74.7050	B1=14.5, B2=13.7, I=12.9, R1=13.1, R2=13.2	USNO-B1
43.9	274.1178	74.7050	h=11.7, j=12.0, k=11.6	2MASS
50.9	274.1909	74.7052	I=17.9, R1=19.3, R2=20.1	USNO-B1
51.9	274.1938	74.7057	I=18.2, R1=19.1, R2=20.3	USNO-B1
58.1	274.0879	74.7132	I=18.5, R2=20.0	USNO-B1
61.3	274.0863	74.7099	B2=20.3, R1=19.6, R2=19.9	USNO-B1
67.1	274.0839	74.7067	B1=20.3, B2=19.4, I=18.4, R1=18.8, R2=19.2	USNO-B1
67.4	274.1414	74.6954	h=15.4, j=16.0, k=14.8	2MASS
67.5	274.1404	74.6954	B2=21.0, I=17.6, R2=19.3	USNO-B1

Queried USNO-B1, SDSS, 2MASS.

There are 116 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.