Swift Trigger: 1340561;

Presumed name: GRB 250807B

BAT	01^h 02^m 20.40^s, -59° 05′ 38.4″
position:	(15.585, -59.094 ± 180″)
XRT	01^h 02^m 33.07^s, -59° 07′ 07.0″
position:	(15.6378, -59.1186 ± 5.6″)
UVOT	01^h 02^m 32.98^s, -59° 07′ 07.7″
position:	(15.6374, -59.1188 ± 0.8″)
Galactic N_HI:	1.77×10²⁰ cm^-2
Galactic E(B-V):	0.019 mag

Best RA:	01^h 02^m 32.98^s	= 15.6374 d
Best Dec:	-59° 07′ 07.7″	= -59.1188 d

Gal Lat:	-57.95
Gal Long:	300.24

Sun angle:	120.11°, 8.1 hr West

Galaxies within 200 of UVOT position

	RA*	Dec*		Catalogue
1.6	15.6379	-59.1186		NED
12.5	15.6438	-59.1175		NED
17.8	15.6279	-59.1203		NED
29.6	15.6225	-59.1219		NED
31.3	15.6396	-59.1275		NED
34.0	15.6275	-59.1108		NED
38.4	15.6400	-59.1083		NED
44.0	15.6379	-59.1311		NED
49.0	15.6125	-59.1236		NED
55.8	15.6613	-59.1092	Mag=19.2	NED
56.9	15.6550	-59.1058	Mag=20.32	NED
57.3	15.6550	-59.1057	B=20.3, R2=18.8, i=18.1	SSS
66.4	15.6725	-59.1150		NED
69.1	15.6688	-59.1083		NED
69.8	15.6052	-59.1087	I=19.4, R1=19.6, R2=19.5	USNO-B1
69.9	15.6017	-59.1122		NED
70.6	15.6068	-59.1071	B=21.1, R2=19.4	SSS
71.2	15.6068	-59.1067	B2=21.2, I=18.1, R2=19.3	USNO-B1
71.5	15.6238	-59.1375		NED
73.4	15.6683	-59.1314		NED
73.7	15.6036	-59.1080	B2=20.0, I=18.4	USNO-B1
73.7	15.6038	-59.1297		NED
75.3	15.6029	-59.1075	Mag=20.42	NED
75.8	15.6563	-59.1375		NED
77.2	15.6025	-59.1070	B2=21.5, I=19.0	USNO-B1
80.5	15.6666	-59.1354	B=22.1	SSS
84.9	15.6621	-59.0989		NED
85.0	15.5988	-59.1061	Mag=19.9	NED
85.6	15.6792	-59.1292		NED
86.8	15.6692	-59.1011		NED
93.2	15.5983	-59.1353		NED
93.7	15.6863	-59.1119	B=21.5	SSS
94.2	15.6065	-59.1396	B=22.4	SSS
95.3	15.6138	-59.1425		NED
96.7	15.5854	-59.1222		NED
97.4	15.6425	-59.1458		NED
97.7	15.6857	-59.1078	B2=21.6, R2=20.0	USNO-B1
97.9	15.5929	-59.1039		NED
98.6	15.6712	-59.1400	B2=20.4, I=18.4, R1=18.9, R2=19.4	USNO-B1
98.8	15.6708	-59.1403	Mag=19.6	NED
98.9	15.5854	-59.1256		NED
99.9	15.6845	-59.1052	B=21.0, R2=20.6	SSS
100.0	15.6843	-59.1049	B2=21.1, R2=20.0	USNO-B1
100.9	15.6850	-59.1050		NED
101.5	15.6507	-59.1461	R1=19.6, R2=20.1	USNO-B1
101.5	15.6654	-59.0944		NED
101.8	15.6657	-59.0945	B=22.3	SSS
102.5	15.6513	-59.1464		NED
108.4	15.6850	-59.1011		NED
109.1	15.5817	-59.1086		NED
110.0	15.6504	-59.0889		NED
110.1	15.6849	-59.1003	B2=20.5, I=18.5, R2=19.3	USNO-B1
111.7	15.6321	-59.1497		NED
111.7	15.6742	-59.1433		NED
112.2	15.6008	-59.1436		NED
113.1	15.6954	-59.1286		NED
113.6	15.6425	-59.1503		NED
115.7	15.6788	-59.1431		NED
116.3	15.6163	-59.1492		NED
118.1	15.5929	-59.1425		NED
118.9	15.6200	-59.0869		NED
119.3	15.5921	-59.1424	I=17.9, R1=19.6, R2=19.9	USNO-B1
120.2	15.6058	-59.0897		NED
121.5	15.6775	-59.1456		NED
123.0	15.6980	-59.1330	B=20.3	SSS
123.0	15.6679	-59.0883		NED
123.9	15.5704	-59.1156		NED
125.3	15.6575	-59.0856		NED
125.8	15.6675	-59.1500		NED
125.9	15.6988	-59.1342	Mag=17.9	NED
126.4	15.6275	-59.0842		NED
127.4	15.7038	-59.1094		NED
128.0	15.6671	-59.1509	B2=20.4, I=19.0, R1=19.5, R2=20.1	USNO-B1
129.2	15.6578	-59.0845	B2=21.3, I=17.2, R2=16.8	USNO-B1
129.3	15.7025	-59.1319		NED
130.4	15.5775	-59.0997		NED
130.9	15.5675	-59.1247		NED
131.3	15.7079	-59.1225		NED
131.7	15.7000	-59.1014		NED
131.9	15.5696	-59.1075		NED
132.4	15.5958	-59.1489	Mag=20.3	NED
132.5	15.5658	-59.1163	B2=21.1, R2=19.4	USNO-B1
133.4	15.6546	-59.1547		NED
135.4	15.5642	-59.1173	R1=19.5, R2=18.9	USNO-B1
136.5	15.6271	-59.0811		NED
136.6	15.5821	-59.0936		NED
137.7	15.6964	-59.0955	B=21.0	SSS
138.8	15.6154	-59.1558		NED
140.6	15.6947	-59.0931	B=20.5	SSS
141.0	15.5612	-59.1170	B2=20.4, I=18.7, R2=19.6	USNO-B1
141.3	15.6475	-59.1578		NED
142.4	15.6893	-59.1481	B2=20.5, R2=20.1	USNO-B1
143.0	15.7015	-59.0966	B=20.5	SSS
143.8	15.6900	-59.1481		NED
144.2	15.5938	-59.1522		NED
145.3	15.6929	-59.0903	B=20.8	SSS
145.7	15.6604	-59.0800		NED
146.4	15.6746	-59.0828		NED
148.4	15.5804	-59.1478		NED
148.9	15.5746	-59.0928		NED
149.8	15.6038	-59.1567		NED
150.9	15.6923	-59.0878	B=20.4	SSS
152.7	15.7175	-59.1289		NED
152.7	15.7179	-59.1284	B=22.1	SSS
153.1	15.6604	-59.0781		NED
153.1	15.6092	-59.0789		NED
154.0	15.7171	-59.1064		NED
154.1	15.7060	-59.0945	B=20.7	SSS
155.8	15.6900	-59.1525	Mag=18.7	NED
156.1	15.6983	-59.0888	B=20.6	SSS
156.4	15.6133	-59.0772		NED
157.9	15.6596	-59.1611		NED
158.2	15.7055	-59.0922	B=21.1	SSS
159.3	15.7083	-59.1439		NED
159.4	15.7033	-59.0902	B=20.8	SSS
160.3	15.7242	-59.1169		NED
162.5	15.5600	-59.0975		NED
163.3	15.5925	-59.0797		NED
163.7	15.5488	-59.1169		NED
163.7	15.5492	-59.1231		NED
164.2	15.6542	-59.1636		NED
164.8	15.5493	-59.1117	B2=19.4, I=18.7, R1=18.3	USNO-B1
165.3	15.5497	-59.1098	B2=20.2, R2=19.5	USNO-B1
166.4	15.7213	-59.1019		NED
166.5	15.5779	-59.0842		NED
167.0	15.5480	-59.1255	B2=20.1, R2=19.5	USNO-B1
167.0	15.6863	-59.1578		NED
167.8	15.5481	-59.1104	B2=19.1, R2=19.9	USNO-B1
169.1	15.5467	-59.1125	B2=19.2, I=17.5, R2=19.8	USNO-B1
169.5	15.7138	-59.1447		NED
169.9	15.6554	-59.0725		NED
169.9	15.6788	-59.1608	Mag=19.8	NED
170.5	15.6217	-59.0722		NED
173.8	15.7054	-59.0856		NED
174.2	15.7317	-59.1214		NED
174.7	15.7213	-59.0967		NED
174.9	15.7246	-59.1375		NED
175.4	15.6838	-59.1614		NED
176.3	15.7317	-59.1117		NED
177.3	15.7015	-59.1555	B2=20.5, R2=23.4	USNO-B1
177.3	15.6883	-59.1606	B2=21.3, R2=19.5	USNO-B1
177.4	15.7013	-59.1556		NED
177.4	15.6883	-59.1606		NED
177.6	15.6621	-59.1664		NED
177.7	15.7325	-59.1264		NED
178.5	15.6878	-59.1611	B2=20.5, R1=19.6, R2=19.8	USNO-B1
179.3	15.7325	-59.1086		NED
179.8	15.6079	-59.1664	Mag=20.24	NED
179.9	15.5517	-59.0950		NED
180.1	15.5421	-59.1083		NED
180.7	15.6796	-59.1642		NED
181.0	15.6692	-59.1664	Mag=19.0	NED
181.5	15.6680	-59.0709	B2=21.1, R2=19.4	USNO-B1
181.6	15.6479	-59.0686		NED
181.7	15.6680	-59.0708	B=20.9, R2=20.6	SSS
181.7	15.6008	-59.0719		NED
182.3	15.6683	-59.0708		NED
182.5	15.5387	-59.1167	B2=18.9, R1=18.8	USNO-B1
183.3	15.6687	-59.0705	B2=20.6, R2=20.0	USNO-B1
184.0	15.5696	-59.1564		NED
184.0	15.6566	-59.1690	B2=20.6, R2=14.5	USNO-B1
184.3	15.5579	-59.0881		NED
185.0	15.6550	-59.1694		NED
185.1	15.5373	-59.1172	B2=19.3, I=18.1, R2=19.9	USNO-B1
185.2	15.7112	-59.0842		NED
185.4	15.6592	-59.0686		NED
186.8	15.7338	-59.1344		NED
187.3	15.7300	-59.1400		NED
187.3	15.7063	-59.0806		NED
187.5	15.5360	-59.1175	B2=19.5, I=18.9, R2=19.9	USNO-B1
187.7	15.6638	-59.1691	R1=19.5, R2=19.6	USNO-B1
187.9	15.5358	-59.1170	B2=19.0, R2=19.4	USNO-B1
188.2	15.7233	-59.1469		NED
189.4	15.5600	-59.0844		NED
190.7	15.7234	-59.1481	B=21.9	SSS
191.6	15.7404	-59.1142		NED
192.8	15.5838	-59.1647		NED
193.3	15.5713	-59.0772		NED
195.3	15.6643	-59.1713	R1=19.2, R2=19.2	USNO-B1
196.2	15.6641	-59.1715	R1=19.3, R2=19.1	USNO-B1
196.6	15.5488	-59.1492	Mag=18.6	NED
196.9	15.5487	-59.1491	B=20.5, R2=18.8, i=17.8	SSS
197.0	15.7221	-59.0856		NED
197.9	15.7429	-59.1100		NED
198.4	15.7050	-59.1617		NED
198.4	15.5317	-59.1289		NED
198.9	15.6081	-59.0656	B=21.6, i=19.1	SSS
199.1	15.6587	-59.1730	B2=21.2, R2=18.4	USNO-B1
199.2	15.6593	-59.1730	I=18.5, R2=19.3	USNO-B1
199.4	15.6079	-59.0656		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