Swift Trigger: 319016;

Presumed name: GRB 080804

BAT	21^h 54^m 48.24^s, -53° 11′ 42.0″
position:	(328.701, -53.195 ± 180″)
XRT	21^h 54^m 40.20^s, -53° 11′ 05.5″
position:	(328.66748, -53.18486 ± 2.6″)
UVOT	No position available.
Galactic N_HI:	0.00×10⁰ cm^-2
Galactic E(B-V):	0.016 mag

Best RA:	21^h 54^m 40.20^s	= 328.66748 d
Best Dec:	-53° 11′ 05.5″	= -53.18486 d

Gal Lat:
Gal Long:

Sun angle:	not found

Stars within 3.33 of XRT position

	RA*	Dec*		Catalogue
12.4	328.6626	-53.1831	h=16.5, j=16.6, k=15.7	2MASS
16.2	328.6635	-53.1810	B2=20.6, R1=19.9, R2=23.5	USNO-B1
25.0	328.6559	-53.1843	B2=19.6, I=18.2, R1=18.2, R2=18.1	USNO-B1
25.2	328.6558	-53.1844	h=16.1, j=16.6, k=15.7	2MASS
29.1	328.6579	-53.1905	h=13.4, j=14.0, k=13.3	2MASS
29.7	328.6787	-53.1801	h=15.4, j=15.9, k=15.6	2MASS
29.9	328.6787	-53.1800	B2=17.8, I=16.5, R1=16.6, R2=16.8	USNO-B1
47.2	328.6458	-53.1864	B2=20.8, I=18.4, R1=19.8	USNO-B1
53.0	328.6476	-53.1935	B2=17.5, I=16.5, R1=16.8, R2=16.5	USNO-B1
53.3	328.6476	-53.1937	h=15.5, j=16.0, k=15.6	2MASS
57.3	328.6445	-53.1928	B2=19.6, I=18.1, R1=18.5, R2=18.0	USNO-B1
65.0	328.6396	-53.1780	I=18.4, R1=19.8, R2=23.8	USNO-B1
69.2	328.6658	-53.2041	B2=19.6, I=17.3, R1=17.8, R2=17.9	USNO-B1
69.7	328.6659	-53.2042	h=15.2, j=16.1, k=15.3	2MASS
70.2	328.6649	-53.1654	B2=20.7, R1=19.8, R2=23.1	USNO-B1
70.3	328.6387	-53.1757	B2=20.5, R1=19.7, R2=20.5	USNO-B1
75.0	328.6874	-53.1678	B2=20.3, I=18.3, R1=18.8, R2=19.1	USNO-B1
76.1	328.6410	-53.1988	B2=18.7, R1=17.4, R2=16.5	USNO-B1
76.2	328.6438	-53.2006	B2=16.2, I=14.1, R1=14.8, R2=14.8	USNO-B1
76.4	328.6407	-53.1987	h=15.3, j=15.9, k=15.4	2MASS
76.5	328.6438	-53.2007	h=13.2, j=13.7, k=13.2	2MASS
78.0	328.6994	-53.1950	I=18.4, R1=19.8, R2=23.9	USNO-B1
82.7	328.6968	-53.1701	h=13.1, j=13.4, k=13.0	2MASS
82.8	328.6969	-53.1700	B2=15.4, I=13.7, R1=14.2, R2=14.5	USNO-B1
87.1	328.6455	-53.2052	B2=14.5, I=12.5, R1=13.2, R2=13.4	USNO-B1
87.3	328.6455	-53.2052	h=11.7, j=12.1, k=11.6	2MASS
87.7	328.6479	-53.1635	B2=20.7, R2=23.7	USNO-B1
91.0	328.6539	-53.1609	B2=20.7, R1=19.6, R2=20.2	USNO-B1
93.7	328.6344	-53.2018	B2=20.2, R1=19.6, R2=20.3	USNO-B1
97.1	328.6879	-53.2089	B2=18.8, I=17.5, R1=17.8, R2=17.6	USNO-B1
97.8	328.6907	-53.2082	R1=19.8, R2=19.5	USNO-B1
97.8	328.6881	-53.2091	h=16.0, j=16.6, k=15.8	2MASS
103.4	328.7137	-53.1773	R1=19.8, R2=20.1	USNO-B1
103.7	328.6733	-53.1563	B2=20.5, R1=19.8	USNO-B1
107.7	328.6558	-53.1558	B2=20.6, I=18.4, R1=19.4, R2=19.7	USNO-B1
111.0	328.7189	-53.1861	B2=19.8, I=18.4, R1=19.1, R2=19.2	USNO-B1
113.6	328.6153	-53.1891	B2=19.4, I=16.8, R1=17.7, R2=17.6	USNO-B1
113.9	328.6152	-53.1891	h=14.7, j=15.4, k=14.5	2MASS
114.1	328.6703	-53.1532	B2=20.8, I=18.4, R1=19.8, R2=23.0	USNO-B1
117.3	328.7218	-53.1833	B2=20.4, R2=23.7	USNO-B1
118.2	328.6885	-53.2152	B2=20.2, R1=19.7, R2=20.4	USNO-B1
120.3	328.6182	-53.1692	B2=18.9, I=18.1, R1=18.1, R2=18.3	USNO-B1
120.4	328.6248	-53.1633	B2=20.8, R2=24.1	USNO-B1
120.9	328.6807	-53.1522	h=15.1, j=15.7, k=15.0	2MASS
120.9	328.6803	-53.1522	B2=18.9, I=16.8, R1=17.3, R2=17.4	USNO-B1
123.7	328.6598	-53.2189	I=18.2, R1=19.8	USNO-B1
126.5	328.7172	-53.2035	B2=20.7, R1=19.9, R2=20.6	USNO-B1
128.9	328.6221	-53.2082	B2=20.2, I=18.0, R1=18.8, R2=19.0	USNO-B1
129.3	328.6221	-53.2083	h=16.5, j=17.1, k=15.6	2MASS
130.7	328.6070	-53.1867	B2=18.7, I=17.8, R1=18.2, R2=18.1	USNO-B1
131.6	328.7234	-53.1996	h=14.3, j=14.9, k=14.5	2MASS
131.7	328.7235	-53.1995	B2=17.2, I=15.4, R1=15.8, R2=16.0	USNO-B1
131.8	328.7273	-53.1924	B2=20.1, I=18.2, R1=19.8, R2=20.2	USNO-B1
139.6	328.6093	-53.1679	B2=17.0, I=15.7, R1=16.1, R2=16.3	USNO-B1
139.6	328.6093	-53.1679	h=14.9, j=15.3, k=15.0	2MASS
140.4	328.6030	-53.1901	B2=20.8, I=18.2, R1=19.6, R2=20.0	USNO-B1
140.4	328.7032	-53.2175	B2=20.1, I=18.4, R1=19.3, R2=19.7	USNO-B1
140.8	328.6250	-53.2146	B2=20.5, I=17.9, R1=19.4, R2=19.3	USNO-B1
141.1	328.6249	-53.2146	h=15.6, j=16.2, k=15.3	2MASS
144.6	328.6112	-53.2067	B2=20.4, R1=19.7, R2=20.5	USNO-B1
146.0	328.7317	-53.1721	h=13.9, j=14.4, k=13.8	2MASS
146.1	328.7317	-53.1720	B2=17.4, I=15.0, R1=15.7, R2=15.9	USNO-B1
150.9	328.7316	-53.2016	B2=20.7, I=18.0, R1=19.4, R2=19.8	USNO-B1
151.3	328.6713	-53.1429	h=11.8, j=12.1, k=11.7	2MASS
151.5	328.6714	-53.1428	B2=13.9, I=12.3, R1=12.8, R2=13.2	USNO-B1
153.2	328.6878	-53.1441	h=15.4, j=15.8, k=15.4	2MASS
153.7	328.6660	-53.2275	B2=20.8, R1=19.8, R2=20.4	USNO-B1
153.8	328.6879	-53.1439	B2=18.0, I=16.8, R1=16.7, R2=16.8	USNO-B1
155.0	328.6244	-53.2193	B2=19.6, I=18.2, R1=18.9, R2=18.7	USNO-B1
156.4	328.7043	-53.1474	R1=19.8, R2=24.1	USNO-B1
157.6	328.7347	-53.1677	B2=20.8, I=18.2, R1=19.3, R2=18.9	USNO-B1
158.7	328.5942	-53.1814	B2=20.1, R1=19.1, R2=19.2	USNO-B1
161.8	328.6712	-53.1400	I=18.0, R2=20.3	USNO-B1
161.9	328.6114	-53.2147	h=14.3, j=14.6, k=14.2	2MASS
161.9	328.7418	-53.1913	h=16.3, j=16.8, k=17.1	2MASS
161.9	328.7418	-53.1913	B2=19.1, I=17.9, R1=18.2, R2=18.2	USNO-B1
161.9	328.6114	-53.2147	B2=16.2, I=14.7, R1=15.3, R2=15.4	USNO-B1
163.9	328.6090	-53.2139	B2=20.3, R1=19.8	USNO-B1
164.0	328.5915	-53.1837	B2=19.4, I=17.7, R1=18.0, R2=18.2	USNO-B1
164.8	328.5911	-53.1836	h=16.3, j=17.1, k=15.1	2MASS
164.9	328.7372	-53.1661	B2=20.8, R1=19.7	USNO-B1
166.9	328.7377	-53.2044	h=16.2, j=17.0, k=15.9	2MASS
169.4	328.6109	-53.2175	B2=19.5, I=18.4, R1=18.8, R2=18.6	USNO-B1
171.4	328.6016	-53.2115	B2=18.9, I=18.3, R1=18.8, R2=19.0	USNO-B1
174.1	328.7170	-53.2230	h=16.9, j=16.8, k=15.7	2MASS
174.4	328.7171	-53.2231	B2=19.3, I=18.1, R1=18.4, R2=18.6	USNO-B1
174.9	328.7465	-53.1741	B2=20.6, R1=19.9, R2=20.6	USNO-B1
175.4	328.6603	-53.2334	h=16.0, j=16.6, k=15.9	2MASS
175.4	328.6601	-53.2334	B2=20.8, I=18.3, R1=19.7, R2=20.3	USNO-B1
176.7	328.6147	-53.1473	h=14.0, j=14.3, k=14.1	2MASS
176.8	328.6148	-53.1473	B2=16.0, I=14.4, R1=14.9, R2=15.3	USNO-B1
183.7	328.6215	-53.1419	B2=18.5, I=16.2, R1=16.7, R2=16.9	USNO-B1
183.7	328.6214	-53.1419	h=14.4, j=15.0, k=14.2	2MASS
185.5	328.5887	-53.1643	B2=16.8, I=15.1, R1=15.7, R2=15.9	USNO-B1
185.5	328.5886	-53.1643	h=14.2, j=14.8, k=14.1	2MASS
186.5	328.7407	-53.2125	h=14.0, j=14.6, k=13.7	2MASS
186.8	328.6388	-53.1359	I=17.5, R2=19.6	USNO-B1
187.7	328.6388	-53.1356	B2=17.5, I=17.9, R1=17.4, R2=17.4	USNO-B1
188.9	328.5840	-53.1691	B2=19.6, I=18.3, R1=19.0, R2=19.0	USNO-B1
189.1	328.5939	-53.1564	B2=19.0, I=17.5, R1=17.5, R2=17.4	USNO-B1
189.2	328.5937	-53.1564	h=15.5, j=16.1, k=15.5	2MASS
189.5	328.7052	-53.2324	R1=19.6, R2=23.8	USNO-B1
191.1	328.7326	-53.1489	B2=19.8, I=18.1, R1=18.7, R2=19.1	USNO-B1
196.9	328.5806	-53.2017	R1=19.8, R2=23.0	USNO-B1
198.1	328.6083	-53.2269	B2=20.8, R1=19.8, R2=24.2	USNO-B1
199.0	328.5902	-53.1547	h=13.8, j=14.2, k=13.7	2MASS
199.2	328.5902	-53.1546	B2=16.5, I=14.6, R1=15.1, R2=15.3	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.