Swift Trigger: 305011;

Presumed name: GRB 080307

BAT	09^h 06^m 31.92^s, +35° 10′ 04.8″
position:	(136.6330, 35.1680 ± 180″)
XRT	09^h 06^m 30.79^s, +35° 08′ 19.3″
position:	(136.6283, 35.1387 ± 2.6″)
UVOT	No position available.
Galactic N_HI:	0.00×10⁰ cm^-2
Galactic E(B-V):	0.027 mag

Best RA:	09^h 06^m 30.79^s	= 136.6283 d
Best Dec:	+35° 08′ 19.3″	= 35.1387 d

Gal Lat:
Gal Long:

Sun angle:	not found

Stars within 3.33 of XRT position

	RA*	Dec*		Catalogue
16.6	136.6319	35.1351	B1=19.1, B2=18.7, I=18.4, R1=18.6, R2=18.8	USNO-B1
16.9	136.6334	35.1408	B2=21.4, I=18.5	USNO-B1
16.9	136.6319	35.1350	I=18.4, R=18.6, g=19.2, u=20.7, z=18.2	SDSS
42.6	136.6401	35.1456	h=15.4, j=15.8, k=15.2	2MASS
42.6	136.6401	35.1456	B1=17.0, B2=17.0, I=16.3, R1=16.3, R2=17.1	USNO-B1
42.7	136.6402	35.1455	I=16.8, R=17.0, g=17.4, u=18.5, z=16.7	SDSS
43.7	136.6359	35.1283	B2=19.8, I=17.9, R1=19.2, R2=17.7	USNO-B1
47.8	136.6348	35.1265	B2=20.9, I=18.2, R1=19.8, R2=19.6	USNO-B1
48.1	136.6349	35.1265	h=16.4, j=16.9, k=15.8	2MASS
48.1	136.6349	35.1265	I=18.7, R=19.9, g=21.4, u=24.3, z=18.0	SDSS
54.2	136.6412	35.1495	B2=20.4, I=18.9, R2=19.7	USNO-B1
54.5	136.6429	35.1480	B2=20.4, R2=20.3	USNO-B1
60.8	136.6360	35.1230	I=21.5, R=22.7, g=24.3, u=24.1, z=21.8	SDSS
61.8	136.6111	35.1289	I=19.8, R=21.2, g=22.9, u=25.2, z=19.1	SDSS
62.5	136.6426	35.1259	B2=20.9, I=19.2, R1=20.0, R2=20.1	USNO-B1
64.8	136.6444	35.1510	I=20.6, R=21.2, g=22.9, u=23.6, z=19.9	SDSS
65.3	136.6064	35.1415	B1=20.9, B2=20.0, R2=20.0	USNO-B1
65.3	136.6063	35.1413	I=19.9, R=19.9, g=20.2, u=20.2, z=19.8	SDSS
68.2	136.6168	35.1551	B2=21.5, R2=20.3	USNO-B1
71.5	136.6525	35.1404	B2=19.1, I=16.9, R1=18.5, R2=18.3	USNO-B1
71.6	136.6525	35.1402	I=17.5, R=18.6, g=20.0, u=22.3, z=16.9	SDSS
71.6	136.6525	35.1402	h=14.9, j=15.9, k=14.7	2MASS
83.0	136.6170	35.1176	I=18.9, R1=19.8, R2=19.9	USNO-B1
83.4	136.6546	35.1473	I=21.4, R=21.9, g=21.9, u=22.7, z=22.0	SDSS
83.4	136.6170	35.1174	I=19.3, R=20.3, g=21.8, u=23.1, z=18.6	SDSS
84.1	136.6181	35.1169	I=23.5, R=24.0, g=23.0, u=23.6, z=22.8	SDSS
86.2	136.6281	35.1147	B1=21.3, B2=19.6, R1=17.6	USNO-B1
86.3	136.6277	35.1147	B1=20.4, B2=19.2, I=17.2, R1=18.0, R2=18.5	USNO-B1
86.5	136.6276	35.1147	h=15.9, j=16.6, k=15.4	2MASS
86.7	136.6178	35.1162	I=21.7, R=22.3, g=23.4, u=24.0, z=21.8	SDSS
87.9	136.6006	35.1478	B1=20.7, B2=21.4	USNO-B1
90.3	136.6157	35.1616	I=25.3, R=26.0, g=25.9, u=22.0, z=23.6	SDSS
92.3	136.6438	35.1164	B1=18.2, B2=17.7, I=15.4, R1=16.2, R2=16.6	USNO-B1
92.7	136.6438	35.1163	I=16.3, R=16.8, g=18.2, u=20.8, z=15.9	SDSS
92.8	136.6439	35.1163	h=14.1, j=14.8, k=13.9	2MASS
93.5	136.6078	35.1188	B2=21.4, R1=19.4, R2=19.7	USNO-B1
93.7	136.6437	35.1615	R1=19.3, R2=19.7	USNO-B1
94.4	136.6500	35.1580	I=22.7, R=22.6, g=22.3, u=23.1, z=21.4	SDSS
95.7	136.6264	35.1652	h=12.9, j=13.2, k=12.8	2MASS
95.8	136.6264	35.1653	I=14.0, R=14.1, g=14.5, u=15.7, z=14.0	SDSS
95.9	136.6501	35.1585	B1=18.1, B2=17.6, I=18.4, R1=18.2, R2=19.1	USNO-B1
96.1	136.6264	35.1653	B1=14.6, B2=14.6, I=13.1, R1=13.7, R2=14.1	USNO-B1
96.8	136.6556	35.1237	I=22.0, R=22.8, g=22.9, u=23.4, z=21.8	SDSS
98.0	136.6060	35.1589	I=22.1, R=22.2, g=23.5, u=23.6, z=21.8	SDSS
99.1	136.6499	35.1598	R1=18.9, R2=20.2	USNO-B1
101.1	136.6050	35.1180	B1=19.7, B2=19.4, I=18.9, R1=19.5, R2=19.8	USNO-B1
103.0	136.6020	35.1576	B1=17.8, B2=17.2, I=17.1, R1=17.8, R2=18.1	USNO-B1
103.7	136.6013	35.1572	B1=20.4, I=18.1	USNO-B1
109.8	136.5955	35.1242	I=21.2, R=21.8, g=22.6, u=25.3, z=21.3	SDSS
113.5	136.6241	35.1074	I=24.4, R=24.8, g=25.9, u=24.9, z=20.5	SDSS
114.8	136.6115	35.1100	I=21.8, R=25.5, g=25.4, u=24.7, z=22.1	SDSS
121.9	136.6696	35.1413	I=21.5, R=22.8, g=23.3, u=23.0, z=21.1	SDSS
122.9	136.6294	35.1046	B1=19.6, B2=18.8, I=16.0, R1=17.1, R2=17.8	USNO-B1
123.1	136.5899	35.1523	I=21.3, R=22.7, g=23.5, u=24.8, z=20.7	SDSS
123.3	136.6294	35.1045	I=16.9, R=17.8, g=19.3, u=22.1, z=16.4	SDSS
123.3	136.6295	35.1044	h=14.5, j=15.1, k=14.3	2MASS
123.7	136.5907	35.1234	h=17.7, j=18.5, k=15.2	2MASS
125.1	136.5858	35.1376	B1=21.4, B2=21.1	USNO-B1
125.2	136.6453	35.1068	B1=20.0, B2=20.6, I=18.1, R1=18.6, R2=18.8	USNO-B1
125.8	136.6086	35.1077	B1=16.1, B2=16.2, I=14.9, R1=15.2, R2=15.6	USNO-B1
125.9	136.6086	35.1076	I=15.5, R=15.7, g=16.3, u=17.8, z=15.5	SDSS
126.0	136.6087	35.1076	h=14.3, j=14.7, k=14.2	2MASS
126.0	136.6629	35.1594	I=20.3, R=20.7, g=22.0, u=23.3, z=20.3	SDSS
127.0	136.5994	35.1125	I=22.9, R=22.4, g=23.7, u=24.4, z=21.1	SDSS
128.7	136.6635	35.1174	B1=17.6, B2=17.1, I=15.9, R1=16.3, R2=16.7	USNO-B1
128.8	136.5903	35.1210	I=21.6, R=22.9, g=24.3, u=25.1, z=21.5	SDSS
129.0	136.6635	35.1173	I=16.6, R=16.9, g=17.7, u=19.7, z=16.5	SDSS
129.1	136.6635	35.1173	h=15.2, j=15.5, k=14.9	2MASS
130.7	136.6021	35.1094	B2=20.5, I=19.0, R1=19.4, R2=20.0	USNO-B1
131.0	136.6017	35.1095	B1=21.0, B2=21.4	USNO-B1
132.2	136.6503	35.1067	I=21.2, R=22.4, g=24.0, u=23.4, z=21.1	SDSS
136.0	136.6079	35.1048	I=20.9, R=21.4, g=21.9, u=23.1, z=20.3	SDSS
137.1	136.5832	35.1293	B1=18.3, B2=17.7, I=15.4, R1=16.1, R2=16.5	USNO-B1
137.1	136.5832	35.1292	I=16.1, R=16.8, g=18.2, u=20.7, z=15.8	SDSS
137.2	136.5832	35.1292	h=14.0, j=14.7, k=13.8	2MASS
138.9	136.5888	35.1175	B2=21.4, R1=19.7	USNO-B1
140.1	136.5905	35.1624	I=21.3, R=21.8, g=22.6, u=22.8, z=21.6	SDSS
141.1	136.6295	35.0995	B2=20.4, R2=19.3	USNO-B1
141.4	136.6297	35.0994	B2=20.4, R2=20.1	USNO-B1
143.0	136.6047	35.1734	I=21.3, R=23.0, g=23.6, u=24.0, z=20.1	SDSS
143.6	136.5799	35.1340	I=21.1, R=21.8, g=23.4, u=25.7, z=20.9	SDSS
143.8	136.6170	35.1776	I=20.7, R=21.7, g=23.3, u=25.5, z=19.9	SDSS
144.1	136.6216	35.1784	B2=20.7, R2=20.3	USNO-B1
146.5	136.5923	35.1106	I=25.1, R=25.9, g=24.2, u=23.4, z=20.4	SDSS
148.5	136.5798	35.1273	I=16.6, R=17.6, g=19.1, u=21.5, z=16.0	SDSS
148.6	136.5798	35.1273	h=14.2, j=14.8, k=13.9	2MASS
148.7	136.5797	35.1273	B1=19.2, B2=18.4, I=15.6, R1=16.9, R2=17.4	USNO-B1
152.0	136.5822	35.1197	B1=15.9, B2=15.8, I=14.4, R1=14.7, R2=15.4	USNO-B1
152.0	136.5823	35.1196	I=15.2, R=15.4, g=15.9, u=17.2, z=15.2	SDSS
152.0	136.5823	35.1196	h=14.0, j=14.4, k=13.9	2MASS
152.5	136.6177	35.0972	B1=20.7, B2=21.4, R2=18.9	USNO-B1
152.8	136.6091	35.0993	I=23.8, R=24.7, g=25.5, u=24.5, z=20.3	SDSS
153.1	136.6735	35.1597	h=12.8, j=13.4, k=12.6	2MASS
153.2	136.6735	35.1597	I=15.2, R=16.2, g=17.6, u=20.3, z=14.7	SDSS
153.2	136.6735	35.1599	B1=17.8, B2=17.2, I=14.1, R1=15.4, R2=16.0	USNO-B1
153.3	136.5872	35.1648	I=20.5, R=21.4, g=22.8, u=22.8, z=19.8	SDSS
156.6	136.6815	35.1385	I=24.3, R=24.9, g=24.8, u=24.0, z=20.3	SDSS
156.8	136.6778	35.1225	B2=20.2, I=18.8, R2=19.8	USNO-B1
157.2	136.6779	35.1224	I=19.2, R=19.6, g=20.8, u=22.7, z=18.9	SDSS
159.4	136.6119	35.0965	B2=19.8, I=18.8, R2=19.0	USNO-B1
161.6	136.6377	35.0945	I=21.6, R=22.2, g=23.3, u=22.7, z=20.8	SDSS
162.8	136.5764	35.1542	I=16.6, R=16.9, g=17.7, u=19.6, z=16.5	SDSS
162.8	136.5764	35.1543	h=15.1, j=15.4, k=14.8	2MASS
162.9	136.5763	35.1542	I=16.7, R=17.0, g=17.7, u=19.5, z=16.5	SDSS
163.2	136.5762	35.1543	B1=17.5, B2=17.3, I=15.9, R1=16.6, R2=16.9	USNO-B1
163.6	136.6839	35.1397	I=25.2, R=23.5, g=25.2, u=25.1, z=20.4	SDSS
164.2	136.6749	35.1637	I=19.9, R=21.2, g=22.7, u=25.1, z=19.1	SDSS
164.5	136.6838	35.1334	B1=17.9, B2=17.6, I=17.6, R1=17.5, R2=18.0	USNO-B1
164.6	136.6687	35.1071	I=21.5, R=22.0, g=23.4, u=23.1, z=21.1	SDSS
164.6	136.6838	35.1333	I=17.8, R=17.9, g=18.2, u=19.3, z=17.8	SDSS
166.0	136.6067	35.1813	I=21.4, R=22.6, g=24.1, u=25.2, z=21.0	SDSS
168.9	136.6663	35.1738	I=22.6, R=22.5, g=23.4, u=25.2, z=22.5	SDSS
169.1	136.5712	35.1441	B2=21.4, R2=20.3	USNO-B1
169.4	136.5791	35.1631	B2=21.5, R2=19.9	USNO-B1
170.4	136.6002	35.0973	h=15.7, j=16.4, k=14.8	2MASS
170.5	136.5999	35.0974	B1=19.4, B2=18.4, I=16.7, R1=17.1, R2=17.1	USNO-B1
170.7	136.5940	35.1769	h=15.1, j=15.6, k=14.8	2MASS
170.8	136.5939	35.1769	I=17.5, R=18.5, g=19.8, u=21.9, z=16.9	SDSS
171.1	136.5996	35.0974	B1=19.8, B2=18.4	USNO-B1
171.2	136.5939	35.1771	B1=20.5, B2=19.6, I=16.7, R1=18.3, R2=18.7	USNO-B1
171.3	136.6855	35.1299	B1=19.9, B2=19.5, I=18.2, R1=18.5, R2=18.6	USNO-B1
171.6	136.6856	35.1299	I=18.2, R=18.7, g=20.0, u=22.3, z=17.9	SDSS
171.7	136.5993	35.0973	B1=20.3, B2=19.0, I=16.7, R2=18.3	USNO-B1
171.9	136.6857	35.1299	h=15.4, j=16.5, k=15.5	2MASS
172.4	136.6782	35.1137	I=19.7, R=21.0, g=22.4, u=25.3, z=19.1	SDSS
173.2	136.5809	35.1102	I=21.4, R=23.7, g=25.2, u=23.2, z=20.9	SDSS
173.4	136.5736	35.1566	I=21.9, R=22.4, g=24.1, u=24.2, z=21.2	SDSS
174.0	136.6347	35.0906	B1=20.7, B2=20.8, R2=20.2	USNO-B1
174.9	136.6876	35.1417	I=24.4, R=25.5, g=24.0, u=24.0, z=20.2	SDSS
175.0	136.5704	35.1278	I=19.5, R=19.8, g=20.4, u=22.0, z=19.4	SDSS
175.2	136.5703	35.1279	B1=20.6, B2=20.3, I=19.1, R1=19.9, R2=19.8	USNO-B1
175.8	136.6393	35.0907	R1=19.8, R2=20.1	USNO-B1
176.0	136.5848	35.1723	B2=19.9, R1=19.7	USNO-B1
176.0	136.6393	35.0906	I=20.2, R=20.6, g=21.6, u=24.3, z=19.9	SDSS
176.6	136.5849	35.1726	B1=19.5, B2=19.6, R1=19.3, R2=19.3	USNO-B1
177.2	136.6087	35.0922	I=20.6, R=22.6, g=24.1, u=23.6, z=19.5	SDSS
178.3	136.6626	35.1795	B1=20.5, B2=20.2, I=19.0, R1=20.0, R2=19.9	USNO-B1
179.5	136.5865	35.1024	B1=19.8, B2=18.9, I=16.2, R1=17.5, R2=18.0	USNO-B1
179.6	136.5865	35.1023	h=14.5, j=15.2, k=14.4	2MASS
179.7	136.5866	35.1023	I=17.0, R=18.0, g=19.5, u=22.4, z=16.4	SDSS
179.8	136.6226	35.1884	I=24.5, R=24.9, g=25.1, u=21.9, z=23.2	SDSS
179.9	136.6861	35.1550	B1=19.9, B2=19.3, R1=19.8, R2=19.5	USNO-B1
180.4	136.6708	35.1748	I=18.6, R=19.0, g=20.0, u=22.1, z=18.3	SDSS
180.7	136.6708	35.1749	B1=20.1, B2=19.4, I=18.5, R2=19.3	USNO-B1
181.8	136.5943	35.0965	I=21.1, R=21.5, g=22.0, u=23.0, z=21.6	SDSS
182.4	136.6668	35.1784	I=22.3, R=22.5, g=23.7, u=23.0, z=21.9	SDSS
182.7	136.6010	35.0931	B1=21.2, R2=20.0	USNO-B1
183.7	136.6775	35.1701	I=21.8, R=22.5, g=22.9, u=23.4, z=22.1	SDSS
183.9	136.6538	35.1853	h=15.8, j=16.4, k=15.7	2MASS
184.1	136.6537	35.1854	I=17.5, R=17.7, g=18.3, u=19.8, z=17.4	SDSS
184.4	136.6537	35.1855	B1=18.1, B2=18.1, I=17.3, R1=17.6, R2=17.7	USNO-B1
184.8	136.6709	35.1764	I=19.4, R=20.1, g=21.4, u=23.7, z=19.1	SDSS
185.4	136.5787	35.1069	I=21.1, R=21.6, g=22.7, u=22.8, z=21.0	SDSS
185.4	136.6708	35.1767	B2=20.4, I=19.1, R2=19.7	USNO-B1
187.1	136.6567	35.1852	I=18.9, R=19.7, g=21.2, u=22.9, z=18.5	SDSS
189.9	136.6478	35.0884	I=24.6, R=22.0, g=25.5, u=25.8, z=22.8	SDSS
190.0	136.5880	35.0975	B1=20.8, B2=19.5, I=18.5, R1=18.9, R2=18.5	USNO-B1
190.8	136.5878	35.0973	B2=19.7, R2=19.1	USNO-B1
191.1	136.6917	35.1502	I=21.8, R=22.8, g=24.6, u=24.8, z=21.0	SDSS
191.4	136.6909	35.1531	I=21.6, R=22.9, g=23.8, u=24.8, z=21.1	SDSS
192.4	136.5643	35.1497	I=25.8, R=26.0, g=24.7, u=21.9, z=23.4	SDSS
192.5	136.6773	35.1033	I=24.2, R=24.8, g=24.8, u=24.1, z=20.1	SDSS
193.7	136.6365	35.0853	B2=20.1, I=19.1, R1=19.9, R2=20.3	USNO-B1
193.9	136.5627	35.1437	B2=21.4, R1=19.8	USNO-B1
195.1	136.5624	35.1443	I=19.5, R=20.4, g=21.8, u=26.3, z=18.8	SDSS
195.2	136.5624	35.1444	B2=21.4, I=18.6, R1=19.9, R2=20.3	USNO-B1
196.8	136.5615	35.1375	B1=20.0, R2=19.6	USNO-B1
197.6	136.6954	35.1377	h=16.1, j=17.2, k=15.9	2MASS
198.2	136.6956	35.1380	B2=20.4, I=18.2, R1=19.4, R2=19.8	USNO-B1
198.4	136.6957	35.1379	I=18.7, R=19.6, g=21.1, u=22.7, z=18.2	SDSS
199.0	136.5608	35.1357	I=12.9, R=14.6, g=13.6, u=14.8, z=13.2	SDSS
199.0	136.5608	35.1357	h=11.6, j=11.9, k=11.6	2MASS
199.0	136.5828	35.1796	I=21.1, R=22.3, g=24.2, u=23.9, z=21.4	SDSS
199.1	136.5608	35.1357	B1=13.5, B2=13.3, I=11.9, R1=12.4, R2=12.7	USNO-B1
199.7	136.5605	35.1382	B2=20.2, R1=19.5	USNO-B1

Queried USNO-B1, SDSS, 2MASS.

* 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.