Swift Trigger: 324895;

Presumed name: GRB 080916A

BAT	22^h 25^m 12.48^s, -57° 01′ 19.2″
position:	(336.302, -57.022 ± 180″)
XRT	22^h 25^m 06.47^s, -57° 01′ 21.4″
position:	(336.27696, -57.02261 ± 1.8″)
UVOT	No position available.
Galactic N_HI:	0.00×10⁰ cm^-2
Galactic E(B-V):	0.019 mag

Best RA:	22^h 25^m 06.47^s	= 336.27696 d
Best Dec:	-57° 01′ 21.4″	= -57.02261 d

Gal Lat:
Gal Long:

Sun angle:	not found

Stars within 3.33 of XRT position

	RA*	Dec*		Catalogue
15.2	336.2786	-57.0185	B2=20.7, I=19.6	USNO-B1
29.8	336.2776	-57.0309	I=18.1, R2=16.5	USNO-B1
31.7	336.2776	-57.0314	B2=17.8, I=16.4, R1=16.8, R2=16.7	USNO-B1
31.7	336.2777	-57.0314	h=15.2, j=15.7, k=14.9	2MASS
32.8	336.2689	-57.0146	h=13.1, j=13.5, k=13.0	2MASS
32.8	336.2690	-57.0146	B2=16.0, I=14.6, R1=14.8, R2=14.6	USNO-B1
34.2	336.2690	-57.0142	B2=20.8, I=13.7, R2=20.6	USNO-B1
35.5	336.2654	-57.0302	B2=20.4, I=18.3, R1=19.9, R2=19.5	USNO-B1
40.1	336.2856	-57.0327	B2=18.7, I=16.4, R2=15.9	USNO-B1
40.4	336.2855	-57.0328	h=15.0, j=15.7, k=14.6	2MASS
40.9	336.2567	-57.0199	B2=20.3, I=18.2, R1=19.8, R2=19.7	USNO-B1
41.0	336.2870	-57.0326	B2=18.0, I=17.9, R1=16.7, R2=18.0	USNO-B1
48.7	336.2689	-57.0098	B2=20.6, R1=20.4, R2=20.3	USNO-B1
66.1	336.3104	-57.0204	h=16.1, j=16.3, k=15.8	2MASS
66.4	336.3106	-57.0204	B2=18.2, I=17.0, R1=17.1, R2=17.1	USNO-B1
67.1	336.2659	-57.0402	B2=20.8, R1=20.3, R2=23.0	USNO-B1
68.5	336.2882	-57.0406	B2=20.7, R1=20.3, R2=20.6	USNO-B1
75.5	336.2385	-57.0241	B2=20.5, I=18.2, R2=20.2	USNO-B1
78.4	336.2802	-57.0009	B2=20.8, R2=20.4	USNO-B1
80.6	336.3148	-57.0314	B2=20.7, I=18.3, R1=20.1, R2=20.2	USNO-B1
80.6	336.2801	-57.0003	B2=20.8, R2=20.0	USNO-B1
89.4	336.2786	-57.0474	I=18.2, R1=20.1, R2=21.0	USNO-B1
95.2	336.3026	-57.0001	B2=20.6, I=18.4, R1=19.4, R2=18.9	USNO-B1
95.8	336.3057	-57.0441	B2=20.6, I=19.3, R2=20.4	USNO-B1
101.3	336.2948	-57.0490	I=18.2, R1=20.5, R2=23.6	USNO-B1
101.9	336.2607	-56.9957	h=17.1, j=16.5, k=16.8	2MASS
102.3	336.3214	-57.0376	B2=20.4, I=18.4, R1=19.7, R2=18.7	USNO-B1
104.7	336.3228	-57.0376	B2=20.6, I=18.2, R2=18.1	USNO-B1
106.6	336.2771	-56.9930	h=10.8, j=15.2, k=10.5	2MASS
106.7	336.2799	-56.9930	h=8.1, j=8.8, k=7.9	2MASS
106.9	336.3241	-57.0376	B2=17.1, I=16.2, R1=15.8, R2=15.2	USNO-B1
107.1	336.2707	-56.9931	B2=20.4, I=17.7, R2=20.6	USNO-B1
107.3	336.3242	-57.0376	h=15.2, j=15.5, k=14.1	2MASS
108.0	336.2465	-56.9976	B2=20.5, I=19.3, R1=20.4, R2=20.7	USNO-B1
108.5	336.2324	-57.0405	B2=20.4, I=17.5, R1=19.0, R2=19.2	USNO-B1
108.6	336.2688	-56.9928	I=18.3, R2=19.9	USNO-B1
108.6	336.2853	-57.0524	B2=17.3, I=15.6, R1=16.2, R2=15.9	USNO-B1
108.7	336.2323	-57.0406	h=15.2, j=15.9, k=15.2	2MASS
109.1	336.3214	-57.0044	B2=20.7, R2=20.4	USNO-B1
109.2	336.2854	-57.0526	h=14.4, j=14.8, k=14.2	2MASS
111.7	336.2925	-56.9928	B2=20.8, R2=20.3	USNO-B1
112.7	336.2947	-56.9928	B2=20.6, R2=20.0	USNO-B1
114.2	336.2682	-57.0540	B2=20.1, I=18.1, R1=20.1, R2=20.2	USNO-B1
114.2	336.2953	-56.9925	B2=20.8, R2=19.8	USNO-B1
118.8	336.2470	-57.0513	B2=20.6, R2=20.2	USNO-B1
121.6	336.2905	-56.9897	B2=20.7, I=18.8, R1=20.1, R2=19.8	USNO-B1
121.6	336.3051	-56.9925	B2=20.2, R1=20.3, R2=19.6	USNO-B1
122.7	336.2621	-56.9895	h=14.7, j=15.1, k=14.8	2MASS
122.8	336.2621	-56.9895	B2=17.8, I=15.9, R1=16.6, R2=16.4	USNO-B1
123.7	336.2406	-56.9945	B2=20.6, R1=20.3	USNO-B1
124.5	336.3203	-57.0479	B2=20.5, I=18.7, R1=19.9, R2=20.2	USNO-B1
127.4	336.2370	-56.9947	h=11.3, j=11.7, k=11.1	2MASS
127.5	336.2370	-56.9947	B2=14.1, I=12.1, R1=13.1, R2=13.1	USNO-B1
129.3	336.3246	-57.0475	B2=20.8, R2=20.8	USNO-B1
129.7	336.2801	-56.9866	B2=20.8, R2=20.5	USNO-B1
133.2	336.2795	-56.9856	B2=20.9, R2=20.0	USNO-B1
134.4	336.2565	-57.0582	B2=20.8, I=19.1, R2=20.5	USNO-B1
135.6	336.3202	-56.9932	I=18.1, R2=20.1	USNO-B1
135.9	336.3191	-56.9926	I=18.9, R2=20.4	USNO-B1
140.7	336.2138	-57.0040	I=19.2, R1=20.0, R2=19.4	USNO-B1
141.1	336.2094	-57.0362	B2=20.8, R2=23.9	USNO-B1
145.2	336.2176	-56.9985	B2=16.8, I=15.0, R1=15.6, R2=15.5	USNO-B1
145.3	336.2175	-56.9985	h=14.0, j=14.5, k=14.0	2MASS
145.6	336.3417	-57.0028	B2=20.8, I=19.5, R2=20.2	USNO-B1
147.1	336.3321	-56.9949	B2=20.8, I=19.6, R1=20.5, R2=20.1	USNO-B1
147.9	336.3216	-57.0557	B2=19.7, I=16.7, R1=17.8, R2=18.0	USNO-B1
147.9	336.3216	-57.0558	h=14.5, j=15.3, k=14.5	2MASS
150.4	336.3342	-57.0504	I=18.4, R2=21.0	USNO-B1
151.4	336.2694	-56.9807	B2=20.6, R2=20.1	USNO-B1
151.7	336.2369	-56.9866	B2=20.8, R2=20.9	USNO-B1
151.8	336.2067	-57.0048	B2=20.4, I=19.0, R1=20.2, R2=20.1	USNO-B1
152.8	336.2953	-57.0639	B2=20.4, I=18.7, R1=19.8, R2=19.6	USNO-B1
153.6	336.3433	-57.0453	B2=20.9, I=18.2, R1=20.3, R2=20.7	USNO-B1
154.2	336.2708	-57.0653	B2=18.1, I=17.7, R1=17.6, R2=17.4	USNO-B1
154.9	336.2615	-56.9804	B2=20.8, I=18.3, R1=20.2, R2=20.1	USNO-B1
154.9	336.3445	-57.0002	B2=20.3, I=19.0, R1=19.6, R2=19.9	USNO-B1
155.4	336.1978	-57.0255	B2=19.7, I=18.6, R1=19.2, R2=18.9	USNO-B1
155.6	336.2347	-56.9860	B2=20.8, I=18.9, R1=20.2, R2=19.8	USNO-B1
155.7	336.1975	-57.0222	B2=20.8, R2=20.2	USNO-B1
155.8	336.2674	-57.0656	B2=20.5, I=17.8, R1=17.5	USNO-B1
155.8	336.3402	-57.0489	I=18.3, R1=20.3, R2=20.3	USNO-B1
159.9	336.2487	-57.0643	B2=20.8, I=18.4, R1=19.6, R2=19.3	USNO-B1
160.4	336.3137	-56.9828	B2=16.9, I=16.6, R1=16.5, R2=16.4	USNO-B1
160.7	336.3138	-56.9828	h=15.9, j=16.3, k=15.4	2MASS
161.9	336.2270	-56.9868	B2=20.1, I=18.5, R1=18.9, R2=18.8	USNO-B1
162.7	336.3297	-57.0575	B2=19.7, I=18.4, R1=19.2, R2=19.1	USNO-B1
164.7	336.1946	-57.0136	B2=20.5, I=18.8, R2=19.7	USNO-B1
164.9	336.2255	-56.9864	B2=20.6, I=19.3	USNO-B1
166.3	336.2945	-56.9774	B2=20.7, I=18.2, R1=19.2, R2=19.1	USNO-B1
166.8	336.3468	-56.9961	h=15.8, j=16.5, k=15.2	2MASS
167.0	336.3469	-56.9961	B2=20.1, I=18.2, R1=19.5, R2=19.4	USNO-B1
168.5	336.2829	-57.0693	B2=20.6, I=18.3, R1=19.8, R2=20.0	USNO-B1
171.2	336.3561	-57.0025	B2=20.8, I=18.2, R1=19.4, R2=19.7	USNO-B1
172.0	336.3562	-57.0020	B2=20.8, I=18.5, R2=19.2	USNO-B1
172.7	336.2582	-56.9757	B2=20.8, R2=23.4	USNO-B1
172.8	336.2051	-57.0505	B2=20.8, R2=23.2	USNO-B1
173.6	336.2677	-56.9746	B2=20.2, I=18.3, R1=20.5, R2=20.8	USNO-B1
173.9	336.2588	-56.9753	B2=20.7, I=19.2, R1=20.0, R2=20.3	USNO-B1
174.0	336.2678	-56.9745	h=17.0, j=16.3, k=14.9	2MASS
178.8	336.1858	-57.0247	B2=20.6, I=18.4, R1=20.0, R2=19.8	USNO-B1
179.0	336.3443	-56.9891	B2=20.5, I=19.0, R2=20.7	USNO-B1
179.0	336.3611	-57.0033	B2=20.6, I=18.3, R1=20.2, R2=19.9	USNO-B1
179.5	336.3517	-57.0514	B2=20.8, I=18.3, R1=20.4, R2=20.6	USNO-B1
179.8	336.3674	-57.0310	B2=20.5, R2=20.1	USNO-B1
180.2	336.1851	-57.0247	B2=20.7, I=19.2, R2=20.1	USNO-B1
181.0	336.2149	-57.0599	I=18.9, R2=21.0	USNO-B1
182.1	336.1959	-56.9979	h=12.8, j=13.5, k=12.6	2MASS
182.2	336.1906	-57.0414	B2=19.5, I=18.2, R1=18.5, R2=18.5	USNO-B1
182.7	336.3700	-57.0259	R1=20.0, R2=20.4	USNO-B1
182.7	336.1957	-56.9977	B2=18.6, I=17.1, R1=16.4, R2=16.1	USNO-B1
183.7	336.2470	-56.9743	B2=20.4, I=17.9, R2=19.7	USNO-B1
185.6	336.2464	-56.9738	B2=20.7, R1=20.3, R2=20.2	USNO-B1
186.4	336.3051	-57.0721	B2=20.5, I=18.5, R1=19.8, R2=19.3	USNO-B1
186.6	336.2031	-57.0553	B2=20.0, I=18.8, R1=19.4, R2=19.0	USNO-B1
187.4	336.3061	-57.0722	B2=20.8, I=18.4	USNO-B1
187.7	336.1914	-56.9992	B2=20.0, I=19.0, R1=19.6, R2=19.5	USNO-B1
188.1	336.3519	-57.0553	B2=20.2, I=18.0, R2=20.2	USNO-B1
189.3	336.1848	-57.0070	B2=20.6, I=19.0	USNO-B1
189.5	336.3623	-57.0474	B2=20.9, R2=21.3	USNO-B1
189.8	336.3588	-56.9944	B2=20.7, I=19.4, R2=20.1	USNO-B1
190.6	336.3549	-56.9910	B2=20.6, I=19.3, R1=20.4, R2=20.0	USNO-B1
193.4	336.2171	-57.0653	B2=19.1, I=17.8, R1=18.2, R2=18.0	USNO-B1
193.5	336.2170	-57.0653	h=15.9, j=16.6, k=15.6	2MASS
198.2	336.2527	-57.0761	B2=20.4, R2=21.0	USNO-B1
198.5	336.2242	-57.0697	B2=16.8, I=15.3, R1=15.9, R2=15.9	USNO-B1
198.8	336.2241	-57.0698	h=14.6, j=15.0, k=14.7	2MASS

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.