Swift Trigger: 1429020;

Presumed name: GRB 251230A

BAT	11^h 59^m 34.56^s, +11° 24′ 54.0″
position:	(179.894, +11.415 ± 180″)
XRT	11^h 59^m 35.45^s, +11° 26′ 17.8″
position:	(179.89771, 11.43828 ± 1.9″)
UVOT	11^h 59^m 35.42^s, +11° 26′ 19.3″
position:	(179.8976, +11.4387 ± 0.7″)
Galactic N_HI:	1.74×10²⁰ cm^-2
Galactic E(B-V):	0.025 mag

Best RA:	11^h 59^m 35.42^s	= 179.8976 d
Best Dec:	+11° 26′ 19.3″	= +11.4387 d

Gal Lat:	70.14
Gal Long:	262.61

Sun angle:	102.69°, 6.6 hr West

Galaxies within 200 of XRT position

	RA*	Dec*		Catalogue
10.0	179.8980	11.4410	R=21.2, g=21.8, i=20.9, u=22.7, z=20.5	SDSS
16.6	179.9011	11.4415	B2=20.9, R1=20.1, R2=20.2	USNO-B1
17.2	179.8977	11.4430	R=20.4, g=21.4, i=20.0, u=21.8, z=19.6	SDSS
17.5	179.9015	11.4415	R=20.2, g=20.8, i=20.0, u=21.7, z=19.9	SDSS
21.8	179.8945	11.4331	R=22.5, g=23.7, i=21.7, u=25.2, z=20.8	SDSS
26.7	179.8993	11.4455	R=21.1, g=22.6, i=20.7, u=23.2, z=20.7	SDSS
31.8	179.8920	11.4451	R=22.0, g=23.3, i=21.5, u=23.1, z=21.7	SDSS
37.9	179.8994	11.4279	R=21.1, g=22.0, i=21.0, u=23.9, z=20.8	SDSS
38.0	179.9071	11.4434	R=20.3, g=21.5, i=20.0, u=22.7, z=19.7	SDSS
41.2	179.9013	11.4492	R=23.7, g=26.8, i=24.0, u=20.8, z=21.9	SDSS
46.2	179.9103	11.4347	R=22.9, g=23.1, i=21.6, u=25.9, z=21.3	SDSS
49.3	179.8838	11.4394	R=21.5, g=24.1, i=20.8, u=25.3, z=20.4	SDSS
57.3	179.9123	11.4313	R=22.1, g=23.2, i=21.8, u=24.3, z=21.6	SDSS
59.6	179.8908	11.4534	R=18.5, g=19.3, i=18.2, u=20.4, z=18.0	SDSS
59.8	179.8907	11.4534	B1=19.9, B2=19.1, I=17.7, R1=18.1, R2=18.3	USNO-B1
59.9	179.9046	11.4535	R=22.2, g=23.5, i=22.6, u=24.3, z=21.7	SDSS
62.4	179.8946	11.4553	R=24.0, g=24.6, i=24.5, u=21.6, z=24.6	SDSS
68.6	179.8849	11.4239	R=21.0, g=22.6, i=21.0, u=22.6, z=20.7	SDSS
69.6	179.9173	11.4364	R=20.8, g=22.0, i=20.6, u=22.9, z=20.2	SDSS
69.8	179.8786	11.4332	R=23.0, g=24.3, i=21.4, u=25.7, z=22.5	SDSS
76.6	179.8760	11.4380	R=19.8, g=20.5, i=19.6, u=21.4, z=19.4	SDSS
76.9	179.8886	11.4189	R=21.8, g=22.9, i=21.5, u=24.0, z=21.6	SDSS
77.3	179.8758	11.4381	R1=20.0, R2=20.1	USNO-B1
78.8	179.9121	11.4215	R=22.2, g=22.3, i=19.9, u=21.1, z=21.4	SDSS
81.6	179.9187	11.4477	R=20.8, g=21.6, i=20.4, u=21.7, z=20.2	SDSS
82.5	179.8892	11.4596	R=20.2, g=21.6, i=19.7, u=25.7, z=19.3	SDSS
82.6	179.8892	11.4596	B2=20.9, R2=20.1	USNO-B1
86.9	179.8744	11.4461	R=21.5, g=22.2, i=21.0, u=25.1, z=21.3	SDSS
90.1	179.8882	11.4615	R=21.3, g=22.3, i=21.0, u=22.7, z=20.5	SDSS
94.7	179.9173	11.4562	R=21.7, g=22.7, i=21.5, u=23.2, z=21.1	SDSS
95.8	179.9224	11.4492	R=22.5, g=23.6, i=22.1, u=25.4, z=20.4	SDSS
96.0	179.9222	11.4266	R=21.2, g=22.9, i=20.6, u=23.9, z=19.8	SDSS
98.1	179.9205	11.4226	R=21.0, g=21.6, i=20.2, u=23.2, z=20.1	SDSS
98.3	179.8699	11.4371	R=22.4, g=25.5, i=21.7, u=26.1, z=21.7	SDSS
99.6	179.8965	11.4106	R=22.7, g=22.3, i=21.3, u=24.8, z=20.6	SDSS
102.7	179.8940	11.4666	R=21.9, g=22.1, i=21.3, u=22.7, z=21.2	SDSS
104.9	179.9200	11.4576	R=21.5, g=22.5, i=21.3, u=22.5, z=21.1	SDSS
105.2	179.9260	11.4474	B2=21.0, R1=20.1, R2=20.2	USNO-B1
106.7	179.8699	11.4266	R=21.9, g=22.4, i=22.4, u=23.9, z=22.4	SDSS
107.0	179.8692	11.4282	R=20.9, g=22.6, i=20.2, u=22.6, z=19.7	SDSS
108.2	179.8677	11.4442	R=21.4, g=22.0, i=20.8, u=23.1, z=20.1	SDSS
113.6	179.8851	11.4092	R=22.1, g=23.0, i=23.9, u=23.7, z=21.8	SDSS
116.2	179.9284	11.4266	R=20.7, g=21.6, i=20.2, u=23.0, z=19.9	SDSS
116.3	179.8655	11.4450	R=21.0, g=23.0, i=20.0, u=24.0, z=19.5	SDSS
116.9	179.8649	11.4428	R=20.5, g=21.8, i=19.5, u=23.8, z=18.9	SDSS
117.5	179.9049	11.4064	R=22.5, g=23.9, i=21.8, u=25.3, z=20.9	SDSS
117.8	179.9048	11.4063	R=22.7, i=21.5, u=25.7, z=20.8	SDSS
118.8	179.9298	11.4282	R=21.9, g=22.7, i=22.3, u=23.5, z=21.5	SDSS
119.7	179.8924	11.4711	R=25.8, g=26.9, i=25.9, u=24.2, z=20.5	SDSS
121.4	179.9088	11.4702	R=22.4, g=25.2, i=21.3, u=25.3, z=20.8	SDSS
121.5	179.9233	11.4157	R=21.3, g=23.0, i=20.5, u=25.1, z=20.2	SDSS
123.4	179.9321	11.4443	R=22.1, g=23.5, i=21.6, u=23.3, z=22.2	SDSS
125.0	179.8623	11.4367	R=22.1, g=23.8, i=21.6, u=23.8, z=21.2	SDSS
126.4	179.8676	11.4573	R=21.5, g=22.1, i=21.3, u=22.2, z=21.0	SDSS
126.9	179.8809	11.4695	R=21.8, g=22.3, i=21.1, u=23.3, z=21.4	SDSS
130.1	179.9145	11.4061	R=23.8, g=26.3, i=22.2, u=22.6, z=19.6	SDSS
131.2	179.9095	11.4728	R=21.0, g=21.9, i=20.7, u=22.2, z=20.6	SDSS
131.2	179.8795	11.4065	R=21.5, g=23.2, i=20.9, u=22.9, z=20.2	SDSS
131.2	179.8795	11.4065	R=21.4, g=23.1, i=20.8, u=25.4, z=20.4	SDSS
131.9	179.8818	11.4051	R=22.7, g=24.3, i=20.9, u=24.4, z=20.7	SDSS
132.4	179.8735	11.4102	R=21.6, g=22.3, i=21.2, u=22.1, z=21.2	SDSS
132.8	179.8842	11.4727	R=20.3, g=21.4, i=19.2, u=22.2, z=23.3	SDSS
133.5	179.8822	11.4045	R=22.1, g=22.4, i=21.9, u=23.2, z=21.9	SDSS
137.6	179.9358	11.4464	B=21.9, R=19.9	APM-N
137.9	179.9359	11.4466	R=19.9, g=21.6, i=19.3, u=24.7, z=18.8	SDSS
139.2	179.8868	11.4011	B1=23.2, B2=20.9, I=19.0, R1=19.6, R2=19.7	USNO-B1
139.6	179.9353	11.4262	R=22.1, g=22.9, i=21.4, u=22.9, z=21.2	SDSS
142.4	179.8786	11.4731	R=21.3, g=21.6, i=20.6, u=25.0, z=21.3	SDSS
142.6	179.8805	11.4024	R=21.4, g=22.7, i=20.6, u=23.7, z=20.3	SDSS
144.7	179.9359	11.4528	R=22.8, g=23.5, i=21.4, u=25.3, z=21.4	SDSS
147.0	179.8933	11.3977	R=22.8, g=24.1, i=21.7, u=26.2, z=21.1	SDSS
147.1	179.9389	11.4447	B=21.9, R=20.0	APM-N
148.3	179.9133	11.4000	B=21.9, R=20.0	APM-N
148.5	179.9116	11.3993	R=22.2, g=22.0, i=22.1, u=22.5, z=21.4	SDSS
149.1	179.8561	11.4309	R=22.4, g=23.8, i=21.9, u=22.6, z=21.6	SDSS
149.4	179.9059	11.3975	R=22.2, g=23.8, i=22.3, u=23.2, z=21.7	SDSS
149.7	179.9138	11.3998	R=22.3, g=22.9, i=21.3, u=23.0, z=22.5	SDSS
149.8	179.9200	11.4029	R=21.9, g=23.0, i=21.9, u=22.9, z=21.5	SDSS
149.9	179.9200	11.4028	R=21.9, g=23.1, i=22.0, u=24.1, z=21.7	SDSS
149.9	179.8592	11.4559	R=27.8, g=29.6, i=29.4, u=17.8, z=17.6	SDSS
150.6	179.8551	11.4404	R=21.9, g=23.0, i=22.1, u=22.2, z=21.7	SDSS
150.7	179.8968	11.3964	R=21.9, g=23.0, i=21.5, u=23.9, z=20.7	SDSS
150.9	179.8969	11.3964	R=21.9, g=23.3, i=21.4, u=24.7, z=21.5	SDSS
150.9	179.9142	11.4769	R=21.5, g=22.8, i=20.4, u=26.7, z=25.7	SDSS
152.2	179.9275	11.4688	R=20.9, g=22.6, i=20.0, u=23.2, z=19.6	SDSS
152.9	179.9164	11.4766	R=24.0, g=24.6, i=21.8, u=26.5, z=24.0	SDSS
153.3	179.9411	11.4359	R=21.1, g=21.8, i=20.8, u=22.7, z=20.5	SDSS
153.6	179.9395	11.4263	B=21.9, R=20.0	APM-N
154.0	179.8684	11.4066	R=21.5, g=22.7, i=22.7, u=21.8, z=21.6	SDSS
154.6	179.8768	11.4761	R=21.2, g=21.3, i=19.5, u=21.2, z=25.8	SDSS
156.6	179.9267	11.4712	R=20.7, g=22.7, i=19.6, u=27.1, z=19.1	SDSS
157.6	179.8844	11.3965	R=21.1, g=23.4, i=20.3, u=26.0, z=20.0	SDSS
157.6	179.8843	11.3965	R=21.1, g=22.1, i=19.9, u=25.9, z=19.6	SDSS
159.5	179.9324	11.4667	R=21.6, g=22.7, i=21.4, u=23.7, z=20.4	SDSS
161.7	179.9331	11.4098	R=22.2, g=24.5, i=21.3, u=25.2, z=20.7	SDSS
162.3	179.9422	11.4268	R=21.8, g=22.1, i=21.9, u=22.0, z=22.2	SDSS
162.7	179.8701	11.4021	R=22.7, g=26.0, i=22.0, u=24.2, z=20.7	SDSS
163.1	179.8916	11.3934	B1=19.9, R2=20.3	USNO-B1
163.2	179.8608	11.4109	R=22.3, g=24.0, i=23.3, u=23.3, z=21.9	SDSS
163.8	179.8734	11.3995	R=22.1, g=23.3, i=21.6, u=23.5, z=22.1	SDSS
164.2	179.9279	11.4730	R=22.0, g=23.0, i=20.9, u=25.3, z=21.1	SDSS
164.2	179.8734	11.3994	R=22.0, g=22.8, i=21.9, u=23.2, z=21.9	SDSS
164.5	179.9279	11.4731	B2=21.1, R1=20.1	USNO-B1
165.0	179.9428	11.4503	B1=19.9, B2=20.7, I=19.1, R2=19.3	USNO-B1
165.1	179.9429	11.4503	R=19.7, g=20.6, i=19.3, u=21.9, z=19.2	SDSS
165.9	179.8923	11.4841	R=21.2, g=21.6, i=20.6, u=22.5, z=20.6	SDSS
165.9	179.8879	11.3932	R=22.0, g=23.7, i=22.5, u=23.2, z=23.6	SDSS
166.1	179.8508	11.4340	R=22.0, g=22.7, i=21.9, u=22.7, z=21.3	SDSS
166.7	179.8551	11.4183	R=22.2, g=26.0, i=21.4, u=25.2, z=20.4	SDSS
166.9	179.8548	11.4579	R=21.6, g=23.1, i=21.5, u=22.8, z=21.4	SDSS
168.5	179.9071	11.4842	R=22.3, g=22.9, i=21.5, u=23.2, z=21.1	SDSS
168.6	179.8784	11.4811	R=22.5, g=22.6, i=20.9, u=22.7, z=23.6	SDSS
170.6	179.8568	11.4635	R=20.7, g=21.8, i=20.3, u=21.9, z=20.4	SDSS
174.5	179.9054	11.4861	R=24.1, g=25.1, i=22.1, u=24.8, z=20.5	SDSS
175.1	179.9285	11.4764	R=21.2, g=23.1, i=20.1, u=26.4, z=19.6	SDSS
176.0	179.8925	11.3897	R=21.8, g=23.4, i=20.7, u=27.0, z=20.7	SDSS
176.9	179.8937	11.4873	R=23.6, g=23.1, i=21.4, u=23.2, z=19.4	SDSS
177.3	179.9141	11.3917	R=26.3, g=25.1, i=23.8, u=21.6, z=23.3	SDSS
177.4	179.8776	11.3931	R=20.6, g=21.9, i=19.8, u=23.2, z=19.4	SDSS
179.1	179.8470	11.4387	R=22.1, g=24.8, i=21.4, u=24.5, z=20.4	SDSS
180.4	179.8866	11.4872	R=23.5, g=27.0, i=21.6, u=24.7, z=23.3	SDSS
181.1	179.9267	11.3968	R=24.2, g=25.4, i=21.6, u=22.9, z=21.7	SDSS
181.1	179.8523	11.4149	R=21.5, g=23.5, i=20.5, u=22.1, z=19.9	SDSS
181.2	179.8649	11.3996	R=21.9, g=24.3, i=22.2, u=23.9, z=22.3	SDSS
181.7	179.8844	11.3895	R=21.2, g=22.8, i=20.8, u=26.0, z=20.2	SDSS
183.8	179.9070	11.3880	R=22.1, g=22.8, i=23.0, u=24.5, z=20.9	SDSS
184.5	179.8627	11.4002	R=20.4, g=21.6, i=20.0, u=23.3, z=19.6	SDSS
184.6	179.8627	11.4002	R=20.8, g=21.7, i=20.2, u=21.6, z=20.2	SDSS
185.4	179.8567	11.4061	R=21.9, g=22.8, i=21.5, u=24.7, z=21.7	SDSS
185.5	179.8567	11.4061	R=22.1, g=22.9, i=21.4, u=24.3, z=21.4	SDSS
185.8	179.8927	11.4896	B=21.9, R=20.0	APM-N
188.0	179.9470	11.4183	R=22.3, g=23.1, i=21.7, u=22.7, z=21.4	SDSS
188.1	179.8887	11.4898	R=24.0, g=28.2, i=19.1, u=22.7, z=25.0	SDSS
188.4	179.9385	11.4720	R=22.8, g=22.4, i=22.3, u=23.2, z=21.7	SDSS
190.0	179.8687	11.4827	R=19.6, g=20.9, i=19.1, u=22.7, z=18.7	SDSS
190.2	179.9491	11.4543	R=21.8, g=23.0, i=20.8, u=25.5, z=20.0	SDSS
190.8	179.8446	11.4482	R=21.3, g=24.1, i=20.7, u=24.8, z=20.5	SDSS
191.2	179.8456	11.4528	R=19.8, g=21.5, i=19.3, u=22.2, z=18.9	SDSS
191.3	179.8818	11.3875	R=22.0, g=22.9, i=21.7, u=23.4, z=21.7	SDSS
191.3	179.8456	11.4529	B1=23.6, I=19.0, R2=19.9	USNO-B1
192.5	179.9521	11.4343	R=21.5, g=22.7, i=21.2, u=22.7, z=22.1	SDSS
192.9	179.8872	11.4909	R=22.1, g=27.6, i=19.1, u=20.3, z=25.2	SDSS
193.2	179.8435	11.4462	R=19.3, g=20.7, i=18.8, u=22.4, z=18.3	SDSS
194.9	179.8976	11.4924	I=18.9, R1=19.9	USNO-B1
195.8	179.8622	11.3965	R=22.6, g=23.3, i=21.6, u=22.8, z=21.9	SDSS
196.6	179.8827	11.4909	R=20.9, g=21.8, i=20.5, u=22.6, z=20.3	SDSS
197.5	179.8903	11.4927	R1=18.1, R2=19.9	USNO-B1
198.0	179.8425	11.4484	R=20.7, g=21.3, i=20.7, u=21.4, z=20.3	SDSS
198.1	179.9317	11.4821	R=20.9, g=22.3, i=19.7, u=24.7, z=19.2	SDSS

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