Swift Trigger: 311874;

Presumed name: GRB 080517

BAT	06^h 49^m 01.20^s, +50° 43′ 51.6″
position:	(102.255, +50.731 ± 180″)
XRT	06^h 48^m 58.23^s, +50° 44′ 06.1″
position:	(102.24264, 50.73502 ± 2.7″)
UVOT	No position available.
Galactic N_HI:	0.00×10⁰ cm^-2
Galactic E(B-V):	0.106 mag

Best RA:	06^h 48^m 58.23^s	= 102.24264 d
Best Dec:	+50° 44′ 06.1″	= 50.73502 d

Gal Lat:
Gal Long:

Sun angle:	not found

Stars within 3.33 of XRT position

	RA*	Dec*		Catalogue
2.6	102.2416	50.7353	h=15.8, j=16.5, k=15.7	2MASS
2.7	102.2416	50.7353	B1=19.0, B2=17.8, I=16.7, R1=17.4, R2=16.9	USNO-B1
4.4	102.2421	50.7362	B1=20.6, R1=19.9	USNO-B1
14.4	102.2467	50.7381	B1=20.1, B2=17.0	USNO-B1
15.2	102.2470	50.7382	B2=17.2, I=17.7, R1=18.5, R2=17.3	USNO-B1
36.9	102.2266	50.7364	h=14.9, j=15.4, k=14.9	2MASS
38.5	102.2258	50.7355	R1=20.1, R2=20.8	USNO-B1
42.0	102.2565	50.7273	B2=21.4, R2=19.8	USNO-B1
59.4	102.2267	50.7220	B1=19.4, B2=18.4, I=16.6, R1=16.9, R2=16.7	USNO-B1
59.5	102.2267	50.7219	h=15.3, j=15.8, k=15.2	2MASS
64.0	102.2146	50.7351	B1=20.3, B2=20.1, I=18.4, R1=18.6, R2=18.7	USNO-B1
64.2	102.2441	50.7172	B1=16.1, B2=15.8, I=14.3, R1=14.4, R2=14.5	USNO-B1
64.3	102.2441	50.7172	h=13.3, j=13.6, k=13.1	2MASS
66.0	102.2179	50.7445	B1=19.7, B2=19.5, I=18.4, R1=18.7, R2=18.4	USNO-B1
69.6	102.2398	50.7543	h=12.9, j=13.6, k=12.8	2MASS
69.9	102.2398	50.7543	B1=18.2, B2=17.4, I=14.7, R1=15.1, R2=15.3	USNO-B1
71.2	102.2316	50.7165	B1=17.1, B2=17.0, I=15.5, R1=16.0, R2=15.8	USNO-B1
71.6	102.2316	50.7164	h=14.8, j=15.3, k=14.8	2MASS
73.8	102.2103	50.7347	B1=20.6, B2=20.6, R1=19.4, R2=19.7	USNO-B1
75.9	102.2559	50.7543	B2=21.6, R1=20.0, R2=19.7	USNO-B1
77.3	102.2115	50.7436	B1=19.5, B2=18.8, I=17.2, R1=17.5	USNO-B1
77.3	102.2115	50.7435	h=15.9, j=16.4, k=15.4	2MASS
83.2	102.2189	50.7526	B1=20.6, B2=20.3, I=18.4, R1=19.2, R2=19.5	USNO-B1
85.4	102.2186	50.7532	B1=20.8, R1=18.8	USNO-B1
87.5	102.2060	50.7423	B1=20.1, B2=21.8, R1=13.0	USNO-B1
88.0	102.2289	50.7122	h=13.6, j=14.2, k=13.4	2MASS
89.1	102.2040	50.7390	h=16.0, j=16.3, k=15.5	2MASS
89.2	102.2040	50.7391	B1=19.9, B2=19.2, I=17.1, R1=17.8, R2=17.5	USNO-B1
92.0	102.2405	50.7095	B1=20.3, R1=16.6	USNO-B1
93.7	102.2403	50.7090	B1=19.4, R1=16.7	USNO-B1
93.9	102.2019	50.7310	B2=21.8, R1=20.0, R2=20.1	USNO-B1
98.9	102.2304	50.7614	B2=20.8, R1=19.7, R2=19.5	USNO-B1
99.3	102.2037	50.7474	h=11.2, j=11.5, k=11.2	2MASS
99.4	102.2266	50.7607	B2=21.5, R1=20.4, R2=20.0	USNO-B1
99.4	102.2037	50.7474	B1=13.3, B2=13.2, I=11.3, R1=12.5, R2=12.4	USNO-B1
100.1	102.2019	50.7454	B2=21.0, R1=19.6	USNO-B1
100.3	102.2841	50.7444	B1=19.0, R1=19.9	USNO-B1
102.0	102.2852	50.7439	B1=19.7, R1=19.1	USNO-B1
102.5	102.2872	50.7311	B2=21.6, R1=19.6, R2=20.2	USNO-B1
108.4	102.1997	50.7480	B1=20.2, B2=21.3	USNO-B1
109.3	102.2381	50.7048	B1=19.3, B2=18.5, I=17.6, R1=18.2, R2=17.6	USNO-B1
110.8	102.2891	50.7260	B2=21.3, R1=18.6, R2=20.0	USNO-B1
112.4	102.2263	50.7645	B1=20.9, B2=20.7, R1=19.8, R2=19.4	USNO-B1
113.0	102.2763	50.7581	I=18.9, R1=20.1	USNO-B1
113.4	102.1956	50.7247	B1=19.8, B2=19.7, I=17.6, R1=18.0, R2=17.5	USNO-B1
113.5	102.1957	50.7245	h=15.7, j=16.5, k=15.7	2MASS
113.6	102.2506	50.7039	B1=19.2, B2=18.4, I=16.8, R1=17.0, R2=17.1	USNO-B1
113.6	102.2505	50.7039	h=15.8, j=16.4, k=15.8	2MASS
117.7	102.2146	50.7625	h=13.8, j=14.1, k=13.8	2MASS
117.9	102.2146	50.7625	B1=16.2, B2=16.0, I=14.4, R1=15.0, R2=14.8	USNO-B1
118.4	102.1994	50.7532	h=14.6, j=15.6, k=14.8	2MASS
121.4	102.2043	50.7585	B1=20.4, B2=21.1, I=18.8, R1=20.0, R2=20.2	USNO-B1
123.0	102.2903	50.7511	h=14.3, j=14.6, k=14.3	2MASS
123.1	102.2903	50.7511	B1=16.6, B2=16.5, I=15.1, R1=15.4, R2=15.3	USNO-B1
124.2	102.2683	50.7655	h=15.0, j=15.3, k=15.1	2MASS
124.6	102.1998	50.7565	h=15.8, j=15.8, k=15.5	2MASS
124.8	102.2829	50.7115	B1=17.5, B2=17.1, I=15.3, R1=15.9, R2=15.7	USNO-B1
125.0	102.2829	50.7115	h=14.6, j=14.9, k=14.2	2MASS
135.1	102.2510	50.7722	h=16.0, j=16.6, k=15.2	2MASS
136.5	102.2731	50.7024	B2=20.1, I=18.5, R1=19.2, R2=19.8	USNO-B1
139.3	102.2896	50.7598	h=11.7, j=12.3, k=11.5	2MASS
139.5	102.2896	50.7599	B1=17.4, B2=16.7, I=13.7, R1=15.0, R2=14.6	USNO-B1
143.0	102.2862	50.7636	h=16.3, j=16.7, k=15.7	2MASS
143.1	102.2860	50.7638	B2=21.5, I=17.9, R1=18.6, R2=19.1	USNO-B1
144.6	102.1912	50.7585	h=15.6, j=16.5, k=15.9	2MASS
144.9	102.1911	50.7586	B1=19.5, B2=18.9, I=17.2, R1=17.1, R2=17.4	USNO-B1
145.3	102.2806	50.7674	B1=19.3, B2=21.4, R1=20.2, R2=20.5	USNO-B1
146.6	102.2464	50.6944	B1=20.4, B2=20.6, I=18.0, R1=19.2, R2=19.2	USNO-B1
149.0	102.2932	50.7087	B2=21.5, R1=19.8, R2=20.1	USNO-B1
150.2	102.2373	50.6934	B1=20.6, B2=20.9, I=18.7, R1=18.7, R2=19.1	USNO-B1
151.9	102.2314	50.6934	I=18.6, R1=19.6, R2=20.1	USNO-B1
153.4	102.2988	50.7585	B2=21.1, I=17.8, R1=19.8	USNO-B1
153.6	102.2987	50.7587	B2=20.6, I=17.6, R1=19.0, R2=18.7	USNO-B1
153.6	102.2075	50.7714	h=14.2, j=14.8, k=14.0	2MASS
153.8	102.2075	50.7715	B1=19.3, B2=18.5, I=15.7, R1=16.4, R2=16.4	USNO-B1
154.4	102.2003	50.7685	B2=21.9, R1=19.8, R2=20.2	USNO-B1
157.6	102.2281	50.6922	B1=16.6, B2=16.4, I=15.1, R1=15.4, R2=15.3	USNO-B1
157.7	102.2281	50.6922	h=14.2, j=14.6, k=14.2	2MASS
158.4	102.2445	50.6910	B2=21.1, I=18.4, R1=19.1, R2=19.3	USNO-B1
158.6	102.1873	50.7083	B1=19.4, B2=18.8, I=17.1, R1=17.1, R2=17.2	USNO-B1
159.0	102.1872	50.7082	h=15.4, j=16.2, k=15.4	2MASS
159.9	102.2964	50.7065	h=15.3, j=16.1, k=15.5	2MASS
159.9	102.2965	50.7066	B2=21.8, I=17.9, R1=19.9, R2=20.0	USNO-B1
160.7	102.2840	50.7712	h=16.2, j=16.5, k=16.6	2MASS
160.8	102.2840	50.7712	B1=18.9, B2=18.2, I=17.0, R1=17.6, R2=17.2	USNO-B1
161.5	102.2135	50.6941	B2=21.3, R1=19.6, R2=19.8	USNO-B1
162.1	102.2855	50.7710	B1=20.9, R1=17.3	USNO-B1
162.8	102.2160	50.6931	B1=14.8, B2=14.3, I=11.5, R1=12.8, R2=12.8	USNO-B1
163.0	102.2159	50.6930	h=10.8, j=11.3, k=10.6	2MASS
163.7	102.3052	50.7126	B2=20.7, I=17.7, R1=18.2, R2=18.3	USNO-B1
163.8	102.3051	50.7125	h=15.2, j=15.9, k=14.8	2MASS
164.8	102.1737	50.7489	B1=20.1, B2=19.4, I=18.4, R1=18.8, R2=19.2	USNO-B1
165.5	102.2700	50.6925	B1=20.8, B2=19.7, R1=19.4, R2=19.1	USNO-B1
166.0	102.1868	50.7054	B1=19.3, B2=19.0, I=17.7, R1=18.2, R2=17.7	USNO-B1
167.3	102.3045	50.7601	B2=21.5, R1=20.1, R2=20.4	USNO-B1
170.4	102.3023	50.7065	B1=19.5, B2=21.7, R1=17.3	USNO-B1
171.6	102.1881	50.7679	B2=21.9, I=19.1, R1=19.9, R2=19.9	USNO-B1
176.4	102.2062	50.6918	B1=17.5, B2=17.2, I=15.4, R1=15.8, R2=15.6	USNO-B1
176.7	102.2062	50.6917	h=14.2, j=14.7, k=14.3	2MASS
176.7	102.1749	50.7590	B2=21.7, I=18.6, R1=19.9, R2=19.9	USNO-B1
177.9	102.2128	50.6893	B1=20.9, B2=21.0, I=18.0, R1=18.7, R2=18.9	USNO-B1
177.9	102.1709	50.7546	B2=21.3, R1=20.1	USNO-B1
178.3	102.2128	50.6892	h=15.9, j=16.5, k=15.6	2MASS
179.5	102.3130	50.7574	B1=20.4, B2=19.8, I=18.5, R1=18.9, R2=18.9	USNO-B1
182.5	102.2835	50.6914	B1=16.3, B2=16.0, I=14.6, R1=15.0, R2=14.7	USNO-B1
182.9	102.2835	50.6913	h=13.7, j=14.0, k=13.6	2MASS
183.5	102.3037	50.7018	B1=19.3, B2=18.6, I=17.3, R1=17.3, R2=17.1	USNO-B1
183.6	102.3038	50.7018	h=16.0, j=16.3, k=15.7	2MASS
184.0	102.2286	50.7854	h=14.4, j=15.0, k=14.1	2MASS
184.3	102.2286	50.7854	B1=20.6, B2=20.0, I=16.2, R1=17.6, R2=17.3	USNO-B1
187.1	102.3178	50.7559	B1=20.4, B2=19.8, I=18.1, R1=19.1, R2=18.9	USNO-B1
188.1	102.3045	50.7004	B2=21.7, I=18.1, R1=19.1, R2=19.1	USNO-B1
188.2	102.3045	50.7004	h=16.3, j=16.7, k=15.9	2MASS
188.3	102.1938	50.6928	B1=18.8, B2=18.3, I=17.3, R1=16.5, R2=17.3	USNO-B1
188.3	102.1937	50.6928	h=16.0, j=16.4, k=15.9	2MASS
188.5	102.2449	50.6827	B1=16.5, B2=16.6, I=15.0, R1=15.5, R2=15.4	USNO-B1
188.7	102.2449	50.6826	h=14.3, j=14.6, k=14.1	2MASS
192.0	102.2955	50.7766	h=12.9, j=13.4, k=12.8	2MASS
192.1	102.2955	50.7766	B1=16.3, B2=16.0, I=14.1, R1=15.0, R2=14.5	USNO-B1
192.3	102.3261	50.7429	B1=20.2, B2=20.1, I=18.4, R1=19.0, R2=18.6	USNO-B1
194.7	102.1865	50.6943	h=13.3, j=13.8, k=13.2	2MASS
194.9	102.2303	50.7886	B2=21.3, I=18.7, R1=19.4, R2=19.3	USNO-B1
195.8	102.3160	50.7068	h=15.5, j=16.1, k=15.4	2MASS
195.9	102.3162	50.7068	B1=20.9, B2=20.2, I=17.2, R1=17.7, R2=17.7	USNO-B1
197.0	102.2251	50.7886	h=16.3, j=16.7, k=16.0	2MASS
197.2	102.2252	50.7887	B2=21.3, I=17.9, R1=18.7, R2=18.9	USNO-B1
197.3	102.1738	50.7682	I=18.9, R1=20.0	USNO-B1
199.5	102.2409	50.7904	B1=19.8, B2=19.4, I=17.9, R1=18.9, R2=18.5	USNO-B1
199.5	102.1640	50.7595	B2=21.8, R1=20.3, R2=19.8	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.