Swift Trigger: 714404;

Presumed name: GRB 161001A

BAT	04^h 47^m 39.12^s, -57° 16′ 58.8″
position:	(71.913, -57.283 ± 180″)
XRT	04^h 47^m 40.63^s, -57° 15′ 37.4″
position:	(71.9193, -57.2604 ± 2.0″)
UVOT	No position available.
Galactic N_HI:	1.09×10⁰ cm^-2
Galactic E(B-V):	0.010 mag

Best RA:	04^h 47^m 40.63^s	= 71.9193 d
Best Dec:	-57° 15′ 37.4″	= -57.2604 d

Gal Lat:	-39.13
Gal Long:	266.21

Sun angle:	100.68°, 7.7 hr West

¹Sper #6 auto processing.

Galaxies within 3.33 of XRT position

	RA*	Dec*		Catalogue
0.9	71.9197	-57.2603	B=21.8, R2=20.0, i=18.9	SSS
4.8	71.9211	-57.2595	B2=21.2, I=17.0	USNO-B1
30.4	71.9163	-57.2521	B2=20.1, I=16.5	USNO-B1
31.2	71.9160	-57.2519	B2=20.5, I=16.5	USNO-B1
41.5	71.9012	-57.2667		NED
42.1	71.9021	-57.2675	B=20.9, R2=19.6	SSS
42.8	71.9378	-57.2668	I=18.9, R2=20.5	USNO-B1
43.5	71.9129	-57.2489	Mag=19.7	NED
44.1	71.9130	-57.2486	B=21.5, R2=19.5, i=17.9	SSS
44.2	71.9127	-57.2487	I=18.4, R1=19.5, R2=19.3	USNO-B1
45.2	71.9122	-57.2484	R1=19.6, R2=20.1	USNO-B1
49.0	71.9442	-57.2589	Mag=19.7	NED
49.3	71.9058	-57.2488	R1=19.7, R2=23.3	USNO-B1
51.0	71.9421	-57.2536	Mag=19.7	NED
51.6	71.9423	-57.2533	B=21.3, R2=20.4	SSS
54.5	71.9462	-57.2647	Mag=19.7	NED
55.0	71.9117	-57.2750	Mag=19.7	NED
55.7	71.8914	-57.2569	R1=17.0, R2=20.2	USNO-B1
66.6	71.9153	-57.2788	B=21.7, R2=20.6	SSS
68.8	71.9529	-57.2547	Mag=19.4	NED
68.9	71.9531	-57.2548	B=20.7, R2=19.7, i=18.9	SSS
69.0	71.9532	-57.2548	B2=20.1, I=18.5, R1=19.1, R2=19.6	USNO-B1
75.0	71.8814	-57.2569	R1=19.6, R2=23.4	USNO-B1
75.1	71.9104	-57.2401	B=21.4	SSS
76.5	71.8807	-57.2566	B2=21.2, R2=20.0	USNO-B1
77.1	71.8804	-57.2563	B2=19.5, R1=19.5, R2=19.5	USNO-B1
77.3	71.9142	-57.2817	Mag=19.4	NED
78.2	71.9592	-57.2572	Mag=19.4	NED
78.2	71.9267	-57.2817	B2=21.1, I=17.8, R1=20.2	USNO-B1
78.5	71.8920	-57.2444	I=18.7, R2=23.6	USNO-B1
79.0	71.8795	-57.2560	B=20.3, R2=19.8, i=19.1	SSS
79.5	71.9373	-57.2802	R1=19.6, R2=23.1	USNO-B1
79.6	71.8792	-57.2561	B2=20.2, R1=19.6, R2=19.6	USNO-B1
80.2	71.9371	-57.2806	Mag=19.4	NED
80.8	71.8787	-57.2558	Mag=19.4	NED
81.1	71.9283	-57.2384	B=20.8	SSS
82.1	71.9509	-57.2755	B2=21.2, I=18.6	USNO-B1
85.1	71.9067	-57.2378	B=21.7, R2=19.7	SSS
86.2	71.8937	-57.2408	Mag=19.0	NED
86.3	71.8936	-57.2408	B=20.4, R2=19.1, i=19.0	SSS
86.9	71.8933	-57.2408	B2=20.5, R1=19.6, R2=19.6	USNO-B1
87.7	71.9058	-57.2372	Mag=19.0	NED
87.8	71.9202	-57.2848	B2=18.7, I=18.3, R1=19.7, R2=18.2	USNO-B1
91.2	71.9587	-57.2467	Mag=19.0	NED
92.5	71.9458	-57.2392	Mag=19.0	NED
96.2	71.9371	-57.2853	Mag=19.0	NED
102.4	71.9431	-57.2350	B=22.6	SSS
103.3	71.8690	-57.2696	I=18.7, R1=20.1	USNO-B1
106.6	71.8650	-57.2564	Mag=19.6	NED
107.3	71.8647	-57.2563	B=20.4, R2=19.2, i=18.9	SSS
108.5	71.9123	-57.2903	B2=18.7, R2=19.4	USNO-B1
108.8	71.9133	-57.2905	B2=19.9, R1=18.8	USNO-B1
109.1	71.9750	-57.2642	Mag=19.6	NED
110.8	71.8629	-57.2569	Mag=19.6	NED
111.0	71.9129	-57.2910	B2=14.5, I=17.9, R2=18.1	USNO-B1
111.2	71.9133	-57.2911	B2=18.5, I=18.2, R1=18.7	USNO-B1
111.6	71.9706	-57.2466	B2=21.0, I=23.1, R2=20.7	USNO-B1
113.3	71.9275	-57.2916	B=21.9	SSS
113.5	71.8612	-57.2581	B2=21.2, I=18.8, R2=20.6	USNO-B1
113.9	71.8683	-57.2758	Mag=19.6	NED
116.2	71.9620	-57.2830	I=18.8, R1=20.4	USNO-B1
117.3	71.8808	-57.2353	Mag=19.6	NED
117.3	71.9126	-57.2928	B=17.0, R2=16.3, i=15.8	SSS
117.4	71.9129	-57.2928	h=13.9, j=14.6, k=13.5	2MASS
117.6	71.9129	-57.2928	Mag=15.9	NED
117.7	71.8597	-57.2661	B=21.4	SSS
117.8	71.9127	-57.2929	B2=14.5, I=14.4, R1=13.8, R2=13.7	USNO-B1
118.0	71.8596	-57.2661	B2=20.9, I=18.7	USNO-B1
119.1	71.9708	-57.2425	Mag=15.9	NED
119.4	71.9338	-57.2282	I=18.5, R2=14.5	USNO-B1
120.4	71.9298	-57.2274	I=18.4, R2=14.6	USNO-B1
120.5	71.9289	-57.2273	I=18.5, R2=13.4	USNO-B1
121.9	71.8575	-57.2667	Mag=15.9	NED
124.6	71.9283	-57.2261	Mag=15.9	NED
124.6	71.9125	-57.2948	B2=20.2, I=18.6, R2=18.4	USNO-B1
125.7	71.9135	-57.2952	B2=19.3, R1=19.6, R2=19.3	USNO-B1
125.9	71.8555	-57.2663	B=22.1	SSS
126.2	71.9650	-57.2356	Mag=15.9	NED
126.4	71.9083	-57.2258	R1=19.5, R2=20.3	USNO-B1
126.4	71.9745	-57.2419	I=18.7, R2=23.2	USNO-B1
126.7	71.9404	-57.2272	Mag=15.9	NED
126.8	71.9126	-57.2954	B2=18.1, I=14.3, R2=18.7	USNO-B1
128.6	71.9070	-57.2253	B2=21.8, R2=20.8	USNO-B1
129.5	71.9053	-57.2252	B2=21.5, I=18.7, R2=20.8	USNO-B1
129.7	71.9242	-57.2245	B2=21.3, I=18.6, R1=20.2, R2=20.7	USNO-B1
129.7	71.9130	-57.2963	B2=20.6, R2=19.7	USNO-B1
129.9	71.9671	-57.2352	B2=21.3, R2=21.1	USNO-B1
130.6	71.9675	-57.2352	B=22.3	SSS
130.7	71.9736	-57.2817	B=21.7	SSS
132.8	71.9057	-57.2243	B=22.3, R2=20.6	SSS
133.1	71.8983	-57.2956	Mag=15.9	NED
135.0	71.9533	-57.2278	Mag=19.0	NED
135.1	71.9528	-57.2275	B=20.4, R2=19.1, i=18.4	SSS
135.5	71.8554	-57.2753	Mag=19.6	NED
135.9	71.8551	-57.2753	B=20.7, R2=19.5	SSS
136.2	71.8537	-57.2473	B2=21.8, R2=20.6	USNO-B1
136.5	71.9894	-57.2603	B=22.5	SSS
136.9	71.9516	-57.2266	B=22.3	SSS
138.1	71.9229	-57.2986	Mag=19.6	NED
138.8	71.9529	-57.2264	B2=20.4, R1=19.6, R2=14.7	USNO-B1
143.5	71.9071	-57.2997	Mag=19.6	NED
144.9	71.8488	-57.2733	B=22.0, R2=19.9, i=18.8	SSS
145.7	71.8736	-57.2925	B=18.8, R2=17.8, i=17.3	SSS
145.7	71.8738	-57.2925	Mag=19.6	NED
147.2	71.9287	-57.2198	I=17.7, R2=13.7	USNO-B1
147.2	71.8504	-57.2772	Mag=18.4	NED
147.8	71.8501	-57.2773	B=19.7, R2=18.4, i=18.0	SSS
148.3	71.9296	-57.2194	Mag=18.0	NED
148.4	71.9293	-57.2195	B=18.6, R2=18.1, i=17.8	SSS
151.0	71.9276	-57.2187	I=19.0, R2=14.5	USNO-B1
151.2	71.9681	-57.2931	B2=21.1, I=18.6	USNO-B1
151.4	71.8627	-57.2316	B2=21.0, I=18.3, R2=20.6	USNO-B1
151.6	71.9858	-57.2386	Mag=17.5	NED
151.8	71.9280	-57.2185	I=18.6, R2=14.6	USNO-B1
152.2	71.8625	-57.2314	B=21.2, R2=18.8, i=18.0	SSS
152.2	71.8625	-57.2314	Mag=19.0	NED
153.2	71.8733	-57.2950	Mag=16.6	NED
153.8	71.9779	-57.2889	Mag=16.6	NED
154.0	71.9556	-57.2984	B=18.5, R2=17.3, i=16.3	SSS
154.5	71.8710	-57.2264	B2=21.7, I=18.3, R1=19.7	USNO-B1
155.6	71.8875	-57.3000	Mag=16.6	NED
158.4	71.8467	-57.2406	Mag=16.6	NED
159.8	71.8899	-57.2190	B=22.8	SSS
160.0	71.8392	-57.2708	Mag=18.0	NED
160.2	71.8393	-57.2709	B2=18.3, I=17.5, R1=17.6, R2=17.8	USNO-B1
160.3	71.9587	-57.2994	Mag=18.0	NED
160.5	72.0012	-57.2554	B2=21.8, I=18.6, R2=21.2	USNO-B1
160.7	71.8390	-57.2709	B=19.2, R2=18.2, i=17.4	SSS
163.1	71.8359	-57.2650	B2=21.1, I=19.0, R2=20.2	USNO-B1
163.5	71.8355	-57.2633	B=22.2	SSS
163.9	71.8404	-57.2442	Mag=18.0	NED
165.2	71.9938	-57.2825	Mag=18.0	NED
165.4	71.8404	-57.2434	B2=20.8, R2=20.7	USNO-B1
165.7	71.9637	-57.2997	B2=21.4, I=18.7	USNO-B1
166.1	71.9359	-57.3056	B2=21.4, R2=20.1	USNO-B1
166.1	71.9665	-57.2988	B=22.1, R2=20.4	SSS
166.1	71.9904	-57.2350	Mag=18.0	NED
166.3	71.9362	-57.3057	B=21.9	SSS
166.8	71.8401	-57.2427	B=20.7, R2=19.2, i=18.4	SSS
169.8	71.9372	-57.3066	B2=20.5, R2=20.0	USNO-B1
170.1	71.9371	-57.3067	Mag=18.0	NED
170.7	71.9254	-57.2131	Mag=18.0	NED
170.8	71.9017	-57.2139	B=21.5, R2=19.4, i=18.1	SSS
171.0	71.8363	-57.2759	B=21.3, R2=19.8	SSS
171.3	71.9488	-57.2156	B2=20.8, R2=19.1	USNO-B1
171.7	71.8983	-57.2142	Mag=18.0	NED
172.0	71.9278	-57.2128	B2=16.3, I=15.3, R2=12.4	USNO-B1
172.4	71.9923	-57.2875	B=21.5, R2=19.4, i=18.8	SSS
172.6	71.9385	-57.3072	B=21.1, R2=20.1	SSS
173.1	71.9504	-57.2154	B2=20.3, I=18.3, R2=20.1	USNO-B1
173.5	71.9511	-57.2154	B2=20.3, R1=19.7	USNO-B1
174.3	71.8808	-57.2167	Mag=18.0	NED
174.5	71.9862	-57.2925	Mag=18.0	NED
174.8	72.0072	-57.2504	B=21.7	SSS
174.9	71.9536	-57.2155	I=17.8, R2=12.6	USNO-B1
175.5	71.9934	-57.2882	B2=21.1, I=18.7, R2=20.6	USNO-B1
175.7	71.9550	-57.2156	Mag=18.0	NED
175.9	71.9273	-57.3091	B=21.7	SSS
176.0	71.8305	-57.2697	B=22.2	SSS
176.9	72.0071	-57.2478	Mag=18.0	NED
177.8	71.8710	-57.3023	B=21.8	SSS
180.4	71.9421	-57.2119	Mag=18.0	NED
180.5	71.9962	-57.2883	Mag=18.0	NED
180.7	72.0052	-57.2415	B=21.8	SSS
181.3	71.9428	-57.2117	B=22.0, R2=20.2	SSS
181.5	71.9966	-57.2886	B=21.6	SSS
181.8	71.9966	-57.2888	B2=21.8, R2=19.9	USNO-B1
183.7	71.9636	-57.2153	B2=21.2, I=18.7	USNO-B1
185.7	71.9514	-57.3090	B=22.5	SSS
185.7	71.9643	-57.2149	B=22.0, i=18.3	SSS
185.8	72.0142	-57.2550	I=18.6, R2=23.3	USNO-B1
185.8	71.9775	-57.2197	Mag=18.0	NED
187.1	71.8803	-57.2129	B2=21.3, R2=20.8	USNO-B1
187.8	71.8313	-57.2392	Mag=18.0	NED
188.3	71.8787	-57.2131	Mag=18.0	NED
188.5	71.8304	-57.2811	Mag=18.0	NED
189.1	71.8854	-57.3097	Mag=18.0	NED
189.2	71.8784	-57.2127	B2=21.3, R2=20.0	USNO-B1
190.3	71.8300	-57.2819	B2=20.4, R1=19.6	USNO-B1
190.9	71.9708	-57.2153	Mag=18.0	NED
192.2	71.8525	-57.2211	B=22.6	SSS
194.3	72.0148	-57.2761	B=21.5, R2=20.0	SSS
194.6	72.0150	-57.2761	Mag=18.0	NED
195.2	71.8544	-57.2191	B=22.2, R2=19.6	SSS
198.8	71.9547	-57.3122	B=21.4	SSS
198.9	71.9624	-57.2103	B=21.3, R2=18.7, i=17.9	SSS
200.0	71.8921	-57.2068	B=20.7, R2=19.1, i=18.4	SSS

Queried APM-N, SDSS, PSCz, SSS, NED, 2MASSX, USNO-B1.

* 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