Swift Trigger: 352420;

Presumed name: GRB 090518

BAT	07^h 59^m 43.92^s, +00° 46′ 04.8″
position:	(119.933, +0.768 ± 180″)
XRT	07^h 59^m 49.01^s, +00° 45′ 32.8″
position:	(119.9542, 0.7591 ± 2.2″)
UVOT	No position available.
Galactic N_HI:	0.00×10⁰ cm^-2
Galactic E(B-V):	0.038 mag

Best RA:	07^h 59^m 49.01^s	= 119.9542 d
Best Dec:	+00° 45′ 32.8″	= 0.7591 d

Gal Lat:
Gal Long:

Sun angle:	not found

Stars within 3.33 of XRT position

	RA*	Dec*		Catalogue
15.3	119.9521	0.7554	B1=20.7, B2=20.4, I=17.1, R1=18.4, R2=18.7	USNO-B1
15.5	119.9519	0.7627	h=14.7, j=15.1, k=14.5	2MASS
15.8	119.9518	0.7628	B1=17.4, B2=17.3, I=15.3, R1=16.0, R2=16.0	USNO-B1
31.2	119.9602	0.7654	B1=20.9, B2=20.4, R2=19.3	USNO-B1
31.4	119.9599	0.7657	B1=20.6, B2=19.8, I=16.8, R1=18.5, R2=18.0	USNO-B1
39.8	119.9482	0.7498	h=15.4, j=15.8, k=15.4	2MASS
39.8	119.9482	0.7498	B1=17.4, B2=17.7, I=15.7, R1=16.5, R2=16.5	USNO-B1
42.1	119.9452	0.7666	I=17.3, R1=19.2, R2=19.1	USNO-B1
50.4	119.9415	0.7531	B1=18.2, B2=18.1, I=16.4, R1=17.0, R2=17.1	USNO-B1
50.5	119.9416	0.7530	h=16.2, j=16.4, k=16.0	2MASS
52.9	119.9575	0.7734	h=14.7, j=15.2, k=14.8	2MASS
53.3	119.9573	0.7736	B1=18.1, B2=17.7, I=15.5, R1=16.4, R2=16.0	USNO-B1
55.3	119.9420	0.7497	h=15.0, j=15.5, k=14.7	2MASS
55.5	119.9420	0.7498	B1=21.0, B2=20.1, I=16.1, R1=18.0, R2=18.0	USNO-B1
56.5	119.9696	0.7619	I=17.1, R1=19.2, R2=19.4	USNO-B1
56.6	119.9697	0.7618	h=16.2, j=16.7, k=15.3	2MASS
59.3	119.9527	0.7755	h=13.9, j=14.2, k=13.9	2MASS
62.1	119.9677	0.7484	h=16.2, j=16.4, k=15.8	2MASS
62.2	119.9548	0.7764	h=9.1, j=9.6, k=9.0	2MASS
62.5	119.9371	0.7619	h=15.9, j=16.4, k=15.9	2MASS
62.5	119.9370	0.7618	B1=20.1, B2=20.0, I=16.7, R1=18.3, R2=18.4	USNO-B1
64.0	119.9582	0.7764	B2=20.2, R1=18.6, R2=19.0	USNO-B1
67.2	119.9707	0.7678	I=17.6, R1=19.1, R2=18.9	USNO-B1
68.7	119.9428	0.7438	h=16.1, j=16.8, k=15.6	2MASS
68.8	119.9532	0.7782	h=15.0, j=15.5, k=14.9	2MASS
69.2	119.9426	0.7438	B1=20.5, B2=19.9, I=16.9, R1=18.0, R2=18.1	USNO-B1
69.5	119.9630	0.7419	B1=20.8, B2=20.8, I=17.6, R1=19.1, R2=19.4	USNO-B1
72.3	119.9548	0.7792	B2=19.9, I=16.5, R1=19.4	USNO-B1
73.3	119.9459	0.7777	B1=20.8, B2=19.4, I=17.6, R1=19.1, R2=18.9	USNO-B1
78.1	119.9741	0.7677	B1=17.6, B2=17.5, I=15.8, R1=16.5, R2=16.4	USNO-B1
78.2	119.9431	0.7778	B1=19.0, B2=18.8, I=16.2, R1=17.8, R2=17.6	USNO-B1
78.3	119.9742	0.7677	h=15.2, j=15.6, k=15.2	2MASS
84.2	119.9753	0.7692	B2=21.6, R1=19.0, R2=20.1	USNO-B1
84.8	119.9417	0.7790	h=14.4, j=14.7, k=14.3	2MASS
84.8	119.9417	0.7791	B1=16.7, B2=16.9, I=15.0, R1=15.5, R2=15.7	USNO-B1
89.0	119.9575	0.7836	B1=20.3, B2=19.8, I=17.4, R1=18.7, R2=19.2	USNO-B1
90.2	119.9703	0.7399	B1=20.7, B2=20.8, I=16.8, R1=18.4, R2=18.4	USNO-B1
90.8	119.9311	0.7692	h=12.8, j=13.3, k=12.8	2MASS
90.9	119.9311	0.7693	B1=16.5, B2=16.4, I=14.1, R1=14.4, R2=14.8	USNO-B1
90.9	119.9703	0.7396	h=15.9, j=16.9, k=16.0	2MASS
98.6	119.9740	0.7402	h=16.4, j=16.7, k=15.9	2MASS
99.0	119.9322	0.7426	h=15.0, j=15.7, k=14.7	2MASS
99.0	119.9321	0.7428	B2=21.4, I=16.8, R1=18.6, R2=19.0	USNO-B1
99.5	119.9743	0.7401	B1=19.2, B2=18.5, I=16.7, R1=17.4, R2=17.4	USNO-B1
99.8	119.9276	0.7512	R1=19.4, R2=20.1	USNO-B1
99.9	119.9729	0.7386	B2=20.7, I=17.2, R1=18.9, R2=18.7	USNO-B1
102.8	119.9755	0.7781	B1=16.4, B2=16.6, I=14.8, R1=15.1, R2=15.4	USNO-B1
102.9	119.9755	0.7781	h=14.2, j=14.5, k=14.2	2MASS
105.1	119.9479	0.7876	h=15.4, j=15.9, k=15.3	2MASS
105.3	119.9478	0.7876	B1=19.2, B2=18.6, I=16.3, R1=17.3, R2=17.0	USNO-B1
109.4	119.9259	0.7481	B1=14.5, B2=14.7, I=13.3, R1=13.1, R2=13.8	USNO-B1
109.5	119.9259	0.7480	h=12.4, j=12.6, k=12.4	2MASS
111.0	119.9823	0.7465	B1=17.0, B2=16.9, I=15.2, R1=15.8, R2=16.0	USNO-B1
111.1	119.9824	0.7465	h=14.8, j=15.0, k=14.7	2MASS
111.8	119.9371	0.7332	h=15.7, j=16.0, k=15.4	2MASS
112.0	119.9370	0.7332	B2=21.3, I=16.9, R1=19.0, R2=19.2	USNO-B1
112.5	119.9725	0.7845	B2=20.1, I=17.8, R1=19.1, R2=19.4	USNO-B1
112.7	119.9609	0.7897	h=12.0, j=12.6, k=11.8	2MASS
112.7	119.9608	0.7897	B1=17.0, B2=16.9, I=13.7, R1=14.4, R2=14.8	USNO-B1
116.0	119.9327	0.7831	B2=21.4, I=17.4, R1=19.1, R2=18.9	USNO-B1
116.2	119.9864	0.7569	B1=18.5, B2=18.2, I=15.9, R1=16.7, R2=16.9	USNO-B1
116.2	119.9326	0.7831	h=16.2, j=16.8, k=15.5	2MASS
116.5	119.9865	0.7568	h=15.3, j=15.7, k=15.0	2MASS
118.2	119.9257	0.7429	B1=21.0, R1=19.0, R2=19.8	USNO-B1
118.7	119.9298	0.7813	B1=16.2, B2=16.4, I=14.5, R1=14.8, R2=15.1	USNO-B1
118.8	119.9298	0.7813	h=13.4, j=13.9, k=13.4	2MASS
119.3	119.9846	0.7722	B1=21.1, B2=21.1, I=17.7, R2=18.9	USNO-B1
121.3	119.9514	0.7927	I=18.0, R1=19.4	USNO-B1
122.5	119.9231	0.7453	h=14.3, j=14.7, k=14.1	2MASS
122.6	119.9231	0.7453	B1=17.6, B2=17.5, I=15.2, R1=15.7, R2=15.9	USNO-B1
125.1	119.9227	0.7737	B1=16.5, B2=16.5, I=14.5, R1=14.7, R2=15.1	USNO-B1
125.2	119.9226	0.7737	h=13.4, j=13.9, k=13.3	2MASS
125.8	119.9403	0.7912	B1=21.0, I=16.9, R1=19.0, R2=19.3	USNO-B1
127.2	119.9675	0.7918	h=14.5, j=14.7, k=14.4	2MASS
127.3	119.9675	0.7919	B1=16.7, B2=16.6, I=15.0, R1=15.5, R2=15.7	USNO-B1
127.8	119.9344	0.7296	B1=15.5, B2=15.5, I=13.9, R1=13.9, R2=14.5	USNO-B1
127.8	119.9344	0.7296	h=13.0, j=13.3, k=13.0	2MASS
130.0	119.9182	0.7565	B1=19.5, B2=19.0, I=16.8, R1=17.6, R2=17.6	USNO-B1
130.0	119.9182	0.7565	h=15.9, j=16.4, k=17.0	2MASS
132.8	119.9794	0.7860	h=14.7, j=15.0, k=14.6	2MASS
132.8	119.9793	0.7861	B1=17.0, B2=16.9, I=15.2, R1=15.8, R2=16.0	USNO-B1
134.4	119.9208	0.7424	B1=19.0, B2=18.7, I=15.9, R1=16.9, R2=16.9	USNO-B1
134.4	119.9208	0.7424	h=15.2, j=15.7, k=15.0	2MASS
134.6	119.9336	0.7903	I=17.7, R1=19.2, R2=18.7	USNO-B1
135.0	119.9914	0.7642	B1=20.3, B2=20.7, I=17.3, R1=19.2, R2=19.2	USNO-B1
135.4	119.9733	0.7915	B2=20.1, R1=19.3, R2=19.7	USNO-B1
136.4	119.9572	0.7969	h=16.5, j=17.4, k=15.5	2MASS
138.6	119.9174	0.7480	R1=19.4, R2=20.1	USNO-B1
139.5	119.9757	0.7268	B1=20.5, B2=19.9, I=16.9, R1=18.3, R2=18.7	USNO-B1
140.1	119.9758	0.7267	h=16.7, j=16.8, k=15.7	2MASS
140.3	119.9860	0.7365	B1=20.0, B2=19.6, I=17.2, R1=18.6, R2=18.0	USNO-B1
141.2	119.9350	0.7249	B1=19.5, B2=19.3, I=16.9, R1=17.9, R2=17.7	USNO-B1
141.2	119.9350	0.7249	h=16.1, j=17.0, k=15.9	2MASS
142.2	119.9843	0.7847	B1=14.5, B2=14.7, I=13.4, R1=13.1, R2=13.8	USNO-B1
142.3	119.9843	0.7847	h=12.2, j=12.5, k=12.2	2MASS
142.6	119.9165	0.7713	B1=18.7, B2=18.6, I=16.6, R1=17.6, R2=17.4	USNO-B1
142.8	119.9165	0.7713	h=16.2, j=17.0, k=16.0	2MASS
143.4	119.9804	0.7891	R1=18.8, R2=19.5	USNO-B1
144.8	119.9402	0.7968	h=7.9, j=8.5, k=7.8	2MASS
146.1	119.9710	0.7960	B1=19.1, B2=18.8, I=16.7, R1=17.9, R2=17.8	USNO-B1
149.4	119.9800	0.7917	h=15.7, j=16.2, k=15.4	2MASS
149.7	119.9799	0.7918	B1=18.3, B2=18.0, I=16.2, R1=16.9, R2=16.8	USNO-B1
150.8	119.9218	0.7326	h=14.6, j=14.9, k=14.4	2MASS
152.3	119.9351	0.7969	I=17.3, R1=19.1, R2=20.0	USNO-B1
152.5	119.9162	0.7778	B1=19.9, B2=19.5, I=17.0, R1=18.4, R2=18.2	USNO-B1
153.2	119.9208	0.7328	B1=15.1, B2=15.3, I=13.7, R1=13.7, R2=14.3	USNO-B1
154.3	119.9203	0.7328	h=13.9, j=14.2, k=13.8	2MASS
154.7	119.9786	0.7237	B1=16.8, B2=16.9, I=14.7, R1=15.3, R2=15.6	USNO-B1
154.8	119.9786	0.7237	h=13.8, j=14.2, k=13.7	2MASS
156.3	119.9939	0.7416	h=13.2, j=13.6, k=13.1	2MASS
156.3	119.9940	0.7417	B1=16.3, B2=16.4, I=14.1, R1=14.4, R2=14.8	USNO-B1
156.8	119.9948	0.7434	h=16.0, j=16.5, k=15.8	2MASS
158.3	119.9951	0.7428	B1=19.1, B2=17.8, I=15.6, R1=16.6	USNO-B1
159.1	119.9463	0.7156	B1=19.1, B2=18.4, I=17.0, R1=16.9, R2=17.7	USNO-B1
159.3	119.9861	0.7898	I=17.7, R1=19.1, R2=19.5	USNO-B1
161.0	119.9959	0.7429	B1=18.1, B2=17.9, I=15.6, R1=16.8, R2=16.1	USNO-B1
162.1	119.9962	0.7429	h=16.2, j=16.3, k=15.4	2MASS
163.0	119.9341	0.7185	B1=17.3, B2=17.2, I=15.6, R1=16.2, R2=16.2	USNO-B1
163.4	119.9340	0.7184	h=15.4, j=15.6, k=15.4	2MASS
164.3	119.9643	0.8036	I=17.8, R1=19.3, R2=19.6	USNO-B1
165.1	119.9823	0.7954	h=16.4, j=17.0, k=16.2	2MASS
165.6	119.9270	0.7962	B1=18.1, B2=18.0, I=15.9, R1=16.8, R2=17.0	USNO-B1
165.7	119.9823	0.7956	B1=20.4, B2=19.8, I=17.4, R1=18.6, R2=18.4	USNO-B1
165.7	119.9221	0.7921	B1=18.4, B2=18.5, I=16.8, R1=17.8, R2=17.8	USNO-B1
166.4	119.9768	0.7994	B1=18.9, B2=18.8, I=16.9, R1=17.8, R2=18.3	USNO-B1
167.3	119.9462	0.8049	R1=19.1, R2=19.0	USNO-B1
167.7	119.9970	0.7775	B1=16.3, B2=16.3, I=14.6, R1=14.8, R2=15.2	USNO-B1
167.7	119.9970	0.7775	h=13.8, j=14.1, k=13.6	2MASS
168.4	119.9464	0.7130	h=12.2, j=12.4, k=12.1	2MASS
168.4	119.9464	0.7130	B1=14.2, B2=14.4, I=13.1, R1=12.9, R2=13.5	USNO-B1
168.7	119.9094	0.7454	I=17.6, R1=18.8, R2=19.0	USNO-B1
169.9	119.9968	0.7388	B1=17.2, B2=17.3, I=15.1, R1=15.7, R2=15.9	USNO-B1
170.1	119.9968	0.7387	h=14.2, j=14.7, k=14.1	2MASS
170.2	119.9858	0.7943	R1=19.0, R2=20.1	USNO-B1
170.5	119.9379	0.7146	B1=19.7, B2=19.4, I=15.7, R1=17.0, R2=17.0	USNO-B1
170.6	119.9379	0.7146	h=14.5, j=15.1, k=14.2	2MASS
170.7	119.9899	0.7279	B1=19.2, B2=18.5, I=16.3, R1=17.4, R2=17.3	USNO-B1
170.7	119.9899	0.7279	h=15.9, j=16.5, k=15.5	2MASS
171.9	119.9930	0.7313	R1=18.6, R2=19.9	USNO-B1
172.7	120.0019	0.7538	B1=21.1, B2=20.9, R1=19.2, R2=19.3	USNO-B1
172.9	119.9937	0.7318	B1=19.6, B2=19.4, I=17.3, R1=18.6, R2=18.8	USNO-B1
174.8	119.9091	0.7770	I=17.7, R1=19.2, R2=19.6	USNO-B1
176.2	120.0031	0.7602	I=17.7, R1=19.3, R2=19.7	USNO-B1
176.3	119.9346	0.8040	h=14.2, j=14.8, k=13.8	2MASS
176.9	119.9346	0.8042	B1=20.5, B2=19.8, I=15.3, R1=17.4, R2=17.0	USNO-B1
177.3	119.9965	0.7338	B1=21.1, B2=21.1, I=17.6, R1=19.1, R2=19.5	USNO-B1
177.7	119.9734	0.8046	B2=20.6, I=17.5, R1=18.6, R2=18.9	USNO-B1
177.9	119.9347	0.8045	I=15.6, R1=19.0, R2=18.6	USNO-B1
178.6	119.9484	0.8084	h=14.0, j=14.3, k=13.9	2MASS
178.7	119.9483	0.8084	B1=15.9, B2=16.2, I=14.5, R1=14.9, R2=15.2	USNO-B1
179.0	119.9111	0.7343	h=16.4, j=16.9, k=15.3	2MASS
179.7	120.0013	0.7425	h=16.1, j=16.7, k=16.3	2MASS
179.7	120.0013	0.7425	B1=20.5, B2=20.4, I=16.9, R1=18.4, R2=18.8	USNO-B1
180.2	120.0031	0.7484	h=16.1, j=16.9, k=15.9	2MASS
180.2	119.9347	0.8052	h=15.2, j=15.8, k=14.8	2MASS
181.0	119.9833	0.7181	h=13.4, j=13.7, k=13.4	2MASS
181.1	119.9833	0.7181	B1=15.5, B2=15.8, I=14.1, R1=14.2, R2=14.8	USNO-B1
181.3	119.9211	0.7211	B1=17.0, B2=17.3, I=15.6, R1=16.1, R2=16.1	USNO-B1
181.3	119.9212	0.7211	h=15.2, j=15.6, k=15.1	2MASS
181.7	119.9615	0.7092	B2=20.7, I=17.7, R1=19.3, R2=19.3	USNO-B1
181.7	119.9850	0.7191	B1=18.5, B2=18.5, I=16.5, R1=17.4, R2=16.7	USNO-B1
181.9	119.9445	0.8087	B1=21.0, B2=20.9, R2=19.3	USNO-B1
183.5	119.9150	0.7265	B1=19.1, B2=17.6, I=15.3, R1=16.1, R2=16.0	USNO-B1
183.6	119.9150	0.7264	h=15.0, j=15.8, k=14.5	2MASS
184.9	119.9270	0.8026	h=13.2, j=13.6, k=13.2	2MASS
185.1	119.9269	0.8027	B1=16.3, B2=16.4, I=14.2, R1=14.5, R2=14.9	USNO-B1
186.1	119.9626	0.7081	B2=20.7, I=17.5, R1=19.3, R2=19.0	USNO-B1
186.8	120.0017	0.7800	B2=20.7, R1=18.9, R2=19.5	USNO-B1
187.2	119.9057	0.7778	h=15.1, j=15.7, k=14.8	2MASS
187.3	119.9057	0.7779	B2=20.7, I=16.6, R1=18.5, R2=18.5	USNO-B1
187.9	119.9060	0.7791	R1=19.1, R2=19.6	USNO-B1
189.2	119.9607	0.7069	B1=19.1, B2=18.5, I=16.7, R1=17.7, R2=17.6	USNO-B1
189.4	119.9608	0.7069	h=16.3, j=16.7, k=15.8	2MASS
190.1	120.0061	0.7491	B2=20.9, I=17.4, R1=19.2, R2=19.8	USNO-B1
192.0	119.9341	0.8085	h=12.5, j=12.9, k=12.4	2MASS
192.1	119.9340	0.8085	B1=15.8, B2=16.0, I=13.8, R1=13.9, R2=14.5	USNO-B1
192.8	119.9033	0.7425	B1=19.1, B2=18.7, I=16.8, R1=17.7, R2=17.7	USNO-B1
193.2	119.9032	0.7424	h=16.1, j=16.7, k=16.0	2MASS
193.8	119.9587	0.7055	B1=20.9, B2=20.2, I=17.6, R1=18.9, R2=19.1	USNO-B1
193.9	119.9004	0.7609	B1=19.8, B2=19.4, I=16.9, R1=18.1, R2=18.1	USNO-B1
196.3	119.9807	0.8068	h=14.1, j=14.4, k=14.0	2MASS
196.5	119.9807	0.8068	B1=15.9, B2=16.5, I=14.6, R1=15.0, R2=15.2	USNO-B1
196.5	119.9628	0.8130	h=14.3, j=14.7, k=14.3	2MASS
196.6	119.9235	0.7139	B2=20.7, I=17.4, R1=19.0, R2=18.8	USNO-B1
196.7	119.9628	0.8131	B1=16.7, B2=16.6, I=14.7, R1=15.1, R2=15.5	USNO-B1
196.7	119.9628	0.7051	B1=18.2, B2=18.0, I=15.8, R1=16.7, R2=16.6	USNO-B1
196.9	119.9628	0.7051	h=15.1, j=15.6, k=15.0	2MASS
197.1	119.9517	0.8138	B1=18.7, B2=18.8, I=16.9, R1=18.1, R2=17.9	USNO-B1
198.6	119.9727	0.7071	B1=14.9, B2=15.1, I=13.6, R1=13.7, R2=14.2	USNO-B1
198.6	119.9727	0.7071	h=12.9, j=13.1, k=12.9	2MASS
199.4	119.9779	0.8092	h=16.2, j=16.5, k=15.8	2MASS
199.7	119.9781	0.8091	B1=18.1, B2=18.1, I=15.9, R1=17.1, R2=16.1	USNO-B1
199.9	119.9115	0.7237	B1=21.0, B2=20.3, R2=18.8	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.