Swift Trigger: 1263840;

Presumed name: GRB 241030B

BAT	03^h 23^m 09.12^s, +34° 25′ 55.2″
position:	(50.788, +34.432 ± 180″)
XRT	03^h 23^m 10.25^s, +34° 26′ 48.9″
position:	(50.79269, 34.44691 ± 1.9″)
UVOT	No position available.
Galactic N_HI:	1.19×10²¹ cm^-2
Galactic E(B-V):	0.229 mag

Best RA:	03^h 23^m 10.25^s	= 50.79269 d
Best Dec:	+34° 26′ 48.9″	= 34.44691 d

Gal Lat:	-18.72
Gal Long:	155.29

Sun angle:	155.15°, 11.0 hr West

Galaxies within 200 of XRT position

	RA*	Dec*		Catalogue
12.0	50.7959	34.4449	B2=20.7, R2=19.8	USNO-B1
15.5	50.7962	34.4437	B2=20.7, R1=19.8, R2=19.8	USNO-B1
15.7	50.7958	34.4436		NED
28.9	50.7837	34.4439		NED
29.4	50.8021	34.4489		NED
29.8	50.7892	34.4392		NED
39.5	50.7996	34.4375		NED
41.4	50.7808	34.4406		NED
41.9	50.7857	34.4570	B2=20.6, R1=19.9, R2=19.7	USNO-B1
43.2	50.8067	34.4442		NED
45.1	50.8033	34.4381		NED
46.4	50.7850	34.4356		NED
47.8	50.8083	34.4497		NED
49.3	50.7925	34.4333		NED
50.6	50.7825	34.4583		NED
54.9	50.7917	34.4622		NED
55.0	50.8021	34.4339		NED
55.2	50.7783	34.4567		NED
57.9	50.7733	34.4492		NED
58.1	50.7733	34.4491	B1=18.9, B2=19.0, I=17.4, R1=17.5, R2=17.6	USNO-B1
59.0	50.8121	34.4436		NED
59.7	50.8017	34.4617		NED
59.8	50.8017	34.4618	B2=20.7, I=17.2, R1=19.1, R2=19.6	USNO-B1
65.4	50.7827	34.4307	B1=20.5, B2=20.6, R1=19.7, R2=19.7	USNO-B1
67.3	50.7925	34.4656		NED
72.0	50.7975	34.4664		NED
73.3	50.7829	34.4283		NED
73.9	50.7788	34.4300		NED
74.0	50.7750	34.4322		NED
74.1	50.7685	34.4420	B1=20.5, B2=20.7	USNO-B1
75.5	50.7708	34.4361		NED
75.9	50.8071	34.4294		NED
76.0	50.8183	34.4472		NED
77.6	50.8038	34.4664		NED
77.9	50.7862	34.4258		NED
79.7	50.8192	34.4442		NED
83.4	50.7963	34.4239		NED
86.4	50.7933	34.4708		NED
86.6	50.7938	34.4708		NED
87.0	50.8192	34.4367		NED
87.7	50.7721	34.4644		NED
87.9	50.7950	34.4711		NED
89.3	50.8217	34.4403		NED
91.3	50.8129	34.4281		NED
97.9	50.7600	34.4494		NED
101.1	50.8245	34.4368	B1=20.5, B2=20.5, I=17.4, R1=18.3, R2=18.5	USNO-B1
101.3	50.7646	34.4631		NED
101.6	50.8246	34.4367		NED
101.7	50.7925	34.4753		NED
102.0	50.8267	34.4444		NED
102.4	50.7842	34.4744		NED
102.5	50.7804	34.4203		NED
106.4	50.7596	34.4581		NED
107.7	50.7563	34.4483		NED
111.8	50.7737	34.4739		NED
112.8	50.7963	34.4158		NED
113.0	50.8150	34.4214		NED
113.5	50.7654	34.4692		NED
113.5	50.7967	34.4156		NED
113.6	50.7936	34.4154	B2=20.6, R2=20.1	USNO-B1
114.3	50.8025	34.4161		NED
114.5	50.8308	34.4519		NED
115.1	50.7550	34.4392		NED
115.3	50.8158	34.4725		NED
115.9	50.8304	34.4553		NED
116.1	50.7600	34.4292		NED
116.2	50.8308	34.4400		NED
116.4	50.8217	34.4686		NED
120.1	50.8058	34.4783		NED
120.1	50.7883	34.4136		NED
121.0	50.7521	34.4497		NED
123.1	50.7900	34.4811		NED
124.3	50.8267	34.4269		NED
124.4	50.7625	34.4708		NED
125.5	50.7512	34.4542		NED
125.9	50.8308	34.4317		NED
127.0	50.8129	34.4781		NED
127.9	50.7512	34.4564		NED
128.1	50.8016	34.4121	B1=20.6, B2=20.5	USNO-B1
128.5	50.8342	34.4575		NED
128.8	50.8183	34.4758		NED
129.2	50.7546	34.4297		NED
130.1	50.7658	34.4183		NED
130.4	50.7975	34.4108		NED
130.7	50.7979	34.4108		NED
132.1	50.7963	34.4833		NED
134.0	50.7825	34.4106		NED
134.5	50.7812	34.4831		NED
135.1	50.7892	34.4844		NED
135.1	50.7537	34.4272		NED
135.4	50.8346	34.4322		NED
136.5	50.7563	34.4703		NED
136.6	50.7488	34.4354	B1=20.5, B2=20.4	USNO-B1
137.1	50.8208	34.4769		NED
138.4	50.7850	34.4847		NED
138.7	50.7463	34.4519		NED
140.3	50.8275	34.4731		NED
140.8	50.8362	34.4622		NED
141.3	50.8204	34.4150		NED
142.0	50.7646	34.4150		NED
142.9	50.7771	34.4844		NED
142.9	50.7454	34.4392		NED
143.8	50.8333	34.4687	I=17.7, R1=19.5, R2=19.7	USNO-B1
144.1	50.8179	34.4811		NED
144.7	50.8333	34.4689		NED
145.1	50.7608	34.4775		NED
145.5	50.7610	34.4777	B2=20.7, I=18.4, R1=19.4, R2=19.3	USNO-B1
145.7	50.7517	34.4694		NED
146.3	50.7529	34.4711		NED
149.2	50.7467	34.4639		NED
149.3	50.8125	34.4850		NED
149.7	50.7421	34.4444		NED
152.6	50.7978	34.4047	B2=19.8, R2=20.0	USNO-B1
153.1	50.7975	34.4047		NED
154.0	50.7483	34.4694		NED
154.0	50.8446	34.4483		NED
154.1	50.8308	34.4181		NED
154.2	50.8446	34.4483	B1=20.6, B2=20.7	USNO-B1
154.6	50.7633	34.4825		NED
156.0	50.8438	34.4575		NED
156.4	50.7421	34.4350		NED
157.1	50.8187	34.4089		NED
157.1	50.7875	34.4036		NED
157.4	50.8187	34.4089		NED
157.5	50.8242	34.4822		NED
157.6	50.7446	34.4286		NED
160.7	50.8450	34.4356		NED
163.2	50.7608	34.4100		NED
163.3	50.7833	34.4917		NED
163.6	50.8179	34.4872		NED
165.2	50.8375	34.4197		NED
165.7	50.7950	34.4928		NED
166.1	50.8442	34.4644		NED
166.1	50.7550	34.4128		NED
166.7	50.8196	34.4064		NED
167.0	50.8287	34.4825		NED
167.5	50.8004	34.4931		NED
168.1	50.7993	34.4933	B1=20.6, R2=19.9	USNO-B1
168.4	50.8396	34.4733		NED
168.7	50.8354	34.4161		NED
169.6	50.8237	34.4864		NED
169.7	50.7804	34.4931		NED
169.7	50.7908	34.4939		NED
170.2	50.8471	34.4325		NED
172.1	50.7650	34.4889		NED
172.6	50.7396	34.4269		NED
172.7	50.8333	34.4128		NED
172.7	50.7651	34.4892	B1=20.4, B2=20.5, I=18.4, R1=19.3, R2=18.9	USNO-B1
172.7	50.7346	34.4447		NED
172.9	50.7367	34.4342		NED
172.9	50.7417	34.4233		NED
174.1	50.8362	34.4792		NED
174.2	50.8362	34.4792		NED
174.4	50.7358	34.4597		NED
174.5	50.8458	34.4678		NED
175.2	50.8092	34.4936		NED
175.5	50.7537	34.4836		NED
177.3	50.8392	34.4161		NED
177.3	50.8417	34.4747		NED
178.4	50.7692	34.4925		NED
179.2	50.8146	34.4006		NED
179.3	50.7933	34.4967		NED
179.6	50.8521	34.4381		NED
180.2	50.8100	34.3989		NED
181.0	50.7833	34.3972		NED
181.7	50.8488	34.4672		NED
181.8	50.7512	34.4097		NED
182.2	50.8438	34.4192		NED
183.7	50.7662	34.4931		NED
184.7	50.7558	34.4881		NED
185.0	50.8108	34.4961		NED
185.7	50.7554	34.4883		NED
186.2	50.7379	34.4217		NED
186.5	50.8492	34.4692		NED
186.8	50.7600	34.4025		NED
188.1	50.7379	34.4731		NED
188.3	50.8067	34.4981		NED
188.5	50.8396	34.4822		NED
188.6	50.7704	34.4961		NED
189.4	50.8408	34.4814		NED
189.6	50.8358	34.4081		NED
190.2	50.7429	34.4803		NED
190.3	50.7479	34.4848	B1=19.8, B2=20.0, R1=19.0, R2=19.1	USNO-B1
190.7	50.8017	34.3944		NED
191.0	50.8542	34.4319		NED
191.9	50.7433	34.4122		NED
192.3	50.8079	34.3950		NED
193.0	50.8250	34.4933		NED
198.2	50.8196	34.4972		NED

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