Swift Trigger: 1426088;

Presumed name: GRB 251221A

BAT	06^h 45^m 37.92^s, +00° 43′ 44.4″
position:	(101.408, +0.729 ± 180″)
XRT	06^h 45^m 42.66^s, +00° 43′ 56.1″
position:	(101.42776, 0.73226 ± 1.9″)
UVOT	No position available.
Galactic N_HI:	5.90×10²¹ cm^-2
Galactic E(B-V):	1.319 mag

Best RA:	06^h 45^m 42.66^s	= 101.42776 d
Best Dec:	+00° 43′ 56.1″	= 0.73226 d

Gal Lat:	-0.94
Gal Long:	211.63

Sun angle:	154.37°, 11.2 hr West

Galaxies within 200 of XRT position

	RA*	Dec*		Catalogue
26.2	101.4316	0.7384	B2=20.3, I=18.1, R2=18.3	USNO-B1
32.5	101.4191	0.7298	B2=20.2, R2=18.7	USNO-B1
38.1	101.4349	0.7400	B=20.1, R2=19.0, i=18.4	SSS
41.1	101.4341	0.7418	B=21.8, R2=20.7	SSS
43.9	101.4391	0.7369	I=17.9, R2=19.7	USNO-B1
53.9	101.4136	0.7275	B=19.0, R2=18.0, i=17.5	SSS
61.1	101.4404	0.7436	B=18.0, i=15.7	SSS
65.5	101.4096	0.7317	R1=18.7, R2=18.5	USNO-B1
66.0	101.4160	0.7182	B2=19.8, R2=19.7	USNO-B1
66.2	101.4144	0.7197	B=20.5, R2=18.8, i=17.4	SSS
68.5	101.4144	0.7187	B=19.4, R2=18.6, i=17.4	SSS
72.2	101.4395	0.7485	B=21.3, R2=20.6	SSS
72.9	101.4424	0.7183	B=20.8, R2=19.5, i=18.8	SSS
73.0	101.4370	0.7503	B1=20.7, B2=20.8, R2=19.4	USNO-B1
80.1	101.4414	0.7146	B2=20.3, R1=19.4, R2=19.0	USNO-B1
81.1	101.4117	0.7164	B=19.1, R2=17.8, i=17.5	SSS
86.4	101.4270	0.7562	B1=20.1, B2=19.3, I=17.5, R1=18.2, R2=17.6	USNO-B1
87.8	101.4504	0.7232	B=21.6, R2=20.5	SSS
89.9	101.4264	0.7572	B1=19.6, R1=18.7	USNO-B1
95.8	101.4039	0.7439	B2=20.2, R2=18.8	USNO-B1
96.6	101.4029	0.7422	B1=20.1, B2=18.1, I=17.1, R1=17.5, R2=17.4	USNO-B1
97.3	101.4014	0.7261	B=21.6, R2=20.8	SSS
97.4	101.4490	0.7490	B=21.8, R2=20.9	SSS
97.4	101.4490	0.7490	B2=20.7, I=18.1, R2=19.4	USNO-B1
100.1	101.4155	0.7073	B=18.9, R2=18.1, i=17.4	SSS
101.0	101.4441	0.7550	B=21.7, R2=20.4	SSS
105.6	101.4545	0.7442	B2=19.9, I=17.8, R1=18.7, R2=18.4	USNO-B1
107.3	101.4570	0.7267	R1=18.9, R2=19.3	USNO-B1
108.4	101.4573	0.7264	R1=18.2, R2=18.7	USNO-B1
112.5	101.4005	0.7170	B1=20.7, R2=19.6	USNO-B1
112.7	101.4553	0.7173	B=21.8, R2=21.4	SSS
114.3	101.4005	0.7484	B2=20.9, I=17.9, R1=18.7, R2=18.8	USNO-B1
116.0	101.3965	0.7399	B2=20.8, R2=19.4	USNO-B1
117.9	101.4209	0.7643	B2=21.1, R1=19.2, R2=19.2	USNO-B1
117.9	101.4239	0.7648	R1=19.4, R2=19.7	USNO-B1
118.3	101.4034	0.7102	B=21.5, R2=20.3, i=19.2	SSS
120.6	101.3976	0.7469	B=21.7, R2=21.1	SSS
121.8	101.3996	0.7135	I=18.2, R1=18.6, R2=19.3	USNO-B1
125.5	101.4602	0.7450	B2=20.3, R1=19.2, R2=18.8	USNO-B1
129.0	101.3919	0.7323	B1=20.4, I=17.3, R1=18.9, R2=18.4	USNO-B1
130.9	101.3914	0.7334	B1=19.6, R2=17.4	USNO-B1
131.1	101.3917	0.7272	B2=20.1, I=18.0, R1=19.1, R2=19.2	USNO-B1
133.5	101.4637	0.7414	B=19.5, R2=18.4, i=17.9	SSS
133.9	101.4344	0.6957	I=18.1, R1=19.3, R2=19.6	USNO-B1
138.6	101.4252	0.7707	B2=20.6, R1=18.7, R2=18.9	USNO-B1
139.1	101.4576	0.7568	B=18.6, R2=16.8, i=17.0	SSS
139.3	101.4433	0.6968	B=21.6, R2=20.4	SSS
143.3	101.3939	0.7531	B=21.4, R2=20.4	SSS
143.5	101.3954	0.7555	B=18.7, R2=17.9, i=17.3	SSS
147.2	101.3944	0.7559	B=18.8, R2=18.1, i=17.5	SSS
148.5	101.3990	0.7027	B=21.7, R2=20.1	SSS
149.7	101.4318	0.6909	B=21.3	SSS
150.3	101.4134	0.6931	B=19.5, R2=17.8, i=17.4	SSS
153.4	101.3931	0.7075	B=21.1, R2=20.1	SSS
153.7	101.3855	0.7264	B=18.2, R2=16.2, i=16.6	SSS
154.4	101.3860	0.7226	B=21.7, R2=20.6	SSS
154.9	101.4331	0.7750	R1=19.1, R2=19.5	USNO-B1
157.4	101.3967	0.7014	B1=20.6, B2=19.8, I=16.6, R1=18.9, R2=17.3	USNO-B1
157.5	101.3959	0.7023	B1=20.5, B2=19.7, I=17.0, R1=18.2, R2=17.5	USNO-B1
158.1	101.4397	0.7745	I=17.9, R1=19.0, R2=18.9	USNO-B1
160.9	101.4333	0.6879	B=20.6, R2=19.9, i=18.9	SSS
161.8	101.3946	0.7019	R1=19.1, R2=19.8	USNO-B1
163.1	101.4483	0.7727	B2=20.8, R1=19.0, R2=18.9	USNO-B1
163.8	101.3895	0.7569	B=19.9	SSS
165.7	101.4113	0.6893	B2=20.1, I=18.2, R1=18.3, R2=19.0	USNO-B1
165.9	101.4192	0.6870	I=18.1, R2=19.4	USNO-B1
166.4	101.3852	0.7142	B=19.7, R2=18.2, i=18.3	SSS
167.2	101.3920	0.7026	B=19.3, R2=18.3, i=18.2	SSS
167.5	101.3849	0.7142	B1=20.4, B2=18.4, I=16.8, R1=17.8, R2=17.1	USNO-B1
168.3	101.4013	0.6938	B=21.4, R2=20.5	SSS
168.5	101.3845	0.7144	B=20.0, R2=18.2, i=18.1	SSS
169.3	101.3931	0.7641	B=19.8, R2=18.7, i=18.1	SSS
171.7	101.4686	0.7076	B=19.6, R2=18.6, i=18.3	SSS
172.5	101.4418	0.7781	I=18.6, R2=19.5	USNO-B1
172.6	101.4617	0.6984	B=21.2, R2=20.5	SSS
172.7	101.4618	0.6985	B2=20.6, R2=19.7	USNO-B1
172.9	101.4419	0.7782	B=21.6, R2=20.3	SSS
173.4	101.4691	0.7076	B2=20.2, R1=18.6, R2=19.0	USNO-B1
175.4	101.3877	0.7045	B2=21.1, R2=18.5	USNO-B1
175.8	101.4038	0.7748	B=20.4, R2=19.0, i=18.3	SSS
177.8	101.3807	0.7473	B=20.2, R2=19.0, i=18.3	SSS
178.5	101.3811	0.7155	B=21.3, R2=20.2	SSS
178.8	101.4743	0.7149	I=18.1, R1=18.6, R2=19.0	USNO-B1
179.0	101.4528	0.6893	B2=20.2, R1=19.2, R2=19.1	USNO-B1
182.4	101.4624	0.7692	I=18.6, R2=19.6	USNO-B1
183.3	101.4679	0.7010	I=18.1, R2=20.0	USNO-B1
183.3	101.3943	0.7707	B=19.7, R2=18.8, i=18.4	SSS
183.4	101.4778	0.7226	I=18.1, R1=19.3, R2=19.5	USNO-B1
184.9	101.4357	0.6815	B2=20.1, I=17.4, R1=18.6, R2=18.5	USNO-B1
185.0	101.4357	0.6815	B=20.6, R2=19.3, i=18.5	SSS
185.2	101.3787	0.7169	B=20.6, R2=19.7, i=18.7	SSS
185.2	101.3787	0.7169	R1=18.8, R2=18.9	USNO-B1
186.7	101.3901	0.6966	B=21.5, R2=20.4	SSS
187.3	101.4019	0.7774	B=21.3, R2=20.2, i=19.2	SSS
188.1	101.3766	0.7216	B=20.7, R2=20.0, i=19.0	SSS
188.4	101.4235	0.7844	B2=20.7, R2=19.5	USNO-B1
189.5	101.4165	0.7837	B1=20.5, B2=19.5, R2=18.7	USNO-B1
189.9	101.4224	0.6798	I=18.3, R2=20.0	USNO-B1
192.7	101.4745	0.7062	B1=20.2, R2=19.3	USNO-B1
195.1	101.3814	0.7041	R1=19.4, R2=19.9	USNO-B1
195.4	101.4610	0.7752	B1=20.2, B2=18.8, I=17.6, R1=18.1, R2=17.5	USNO-B1
195.6	101.4610	0.7752	B=19.7, R2=18.7, i=18.4	SSS
196.6	101.4600	0.7764	B1=19.7, B2=19.1, I=17.4	USNO-B1
196.9	101.4601	0.7764	B=19.6, R2=18.7, i=17.8	SSS
197.8	101.4517	0.6828	B=21.4, R2=20.1	SSS
199.1	101.3855	0.6966	I=17.4, R1=18.5, R2=18.9	USNO-B1
200.0	101.4833	0.7332	R1=18.8, R2=18.7	USNO-B1

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

* 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