Swift Trigger: 511866;

Presumed name: GRB 120116A

BAT	01^h 04^m 59.52^s, +33° 55′ 44.4″
position:	(16.248, +33.929 ± 180″)
XRT	01^h 04^m 57.94^s, +33° 55′ 49.4″
position:	(16.2414, 33.9304 ± 2.1″)
UVOT	No position available.
Galactic N_HI:	4.64×10²⁰ cm^-2
Galactic E(B-V):	0.046 mag

Best RA:	01^h 04^m 57.94^s	= 16.2414 d
Best Dec:	+33° 55′ 49.4″	= 33.9304 d

Gal Lat:	-28.86
Gal Long:	126.14

Sun angle:	92.54°, -5.2 hr East of Sun

¹Sper #5 auto processing.

Stars within 3.33 of XRT position

	RA*	Dec*		Catalogue
21.7	16.2391	33.9361	B1=20.6, B2=19.9, I=18.1, R1=18.9, R2=19.1	USNO-B1
21.7	16.2391	33.9361	h=16.2, j=16.6, k=15.6	2MASS
40.9	16.2280	33.9326	h=16.1, j=16.5, k=15.6	2MASS
47.4	16.2287	33.9383	B1=20.8, I=18.6	USNO-B1
47.4	16.2284	33.9228	h=15.2, j=16.0, k=15.2	2MASS
47.5	16.2284	33.9228	B2=20.0, I=17.1, R1=18.9, R2=19.1	USNO-B1
49.9	16.2248	33.9288	B1=20.7, I=18.6, R1=18.8	USNO-B1
56.1	16.2357	33.9156	B1=20.6, B2=19.9	USNO-B1
58.3	16.2280	33.9186	B1=20.8, I=18.6, R1=18.7, R2=19.1	USNO-B1
58.8	16.2355	33.9460	h=13.0, j=13.2, k=12.9	2MASS
58.8	16.2355	33.9460	B1=15.2, B2=15.0, I=13.4, R1=13.9, R2=13.9	USNO-B1
61.1	16.2291	33.9440	B1=20.8, I=18.4, R2=19.1	USNO-B1
61.4	16.2366	33.9138	B1=20.7, B2=20.8, I=17.9, R1=18.7, R2=18.6	USNO-B1
61.9	16.2369	33.9136	B1=20.7, I=18.6, R1=18.9	USNO-B1
62.0	16.2367	33.9136	B1=20.6, I=18.4	USNO-B1
65.8	16.2233	33.9408	B1=20.8, B2=19.9, R2=19.1	USNO-B1
66.4	16.2219	33.9393	B1=20.6, B2=20.7, I=18.6, R1=18.9, R2=18.9	USNO-B1
71.4	16.2281	33.9139	B1=20.7, B2=20.7, I=18.4, R1=18.7, R2=18.8	USNO-B1
74.4	16.2572	33.9145	B1=20.4, B2=20.4, R1=18.9, R2=19.1	USNO-B1
75.3	16.2575	33.9143	B2=20.8, R1=18.9	USNO-B1
77.9	16.2674	33.9318	B1=20.8, B2=20.8, I=18.1, R1=18.6, R2=18.5	USNO-B1
82.5	16.2687	33.9271	B1=20.0, B2=19.4, I=15.2, R1=16.4, R2=16.4	USNO-B1
82.7	16.2688	33.9271	h=13.9, j=14.6, k=13.7	2MASS
82.7	16.2691	33.9310	B1=20.5, R1=18.9, R2=19.0	USNO-B1
83.2	16.2495	33.9083	B1=20.5, I=18.3, R1=17.1, R2=19.1	USNO-B1
88.5	16.2484	33.9543	I=18.7, R1=19.0, R2=19.0	USNO-B1
89.2	16.2513	33.9070	B1=20.8, B2=20.8, I=18.6, R1=18.6, R2=19.1	USNO-B1
91.8	16.2422	33.9559	B1=18.5, B2=18.9, I=16.8, R1=16.8, R2=17.0	USNO-B1
91.8	16.2423	33.9559	h=15.8, j=16.3, k=15.9	2MASS
93.0	16.2105	33.9335	h=15.6, j=16.5, k=15.7	2MASS
93.6	16.2103	33.9338	B1=20.3, B2=20.7, I=17.4, R1=19.0, R2=18.9	USNO-B1
94.1	16.2451	33.9044	B1=20.3, B2=19.9, I=16.7, R1=17.6, R2=17.3	USNO-B1
94.3	16.2452	33.9044	h=15.5, j=15.9, k=15.2	2MASS
104.0	16.2468	33.9590	h=16.1, j=16.6, k=15.4	2MASS
104.5	16.2469	33.9591	B1=20.5, B2=20.6, I=17.4, R1=17.6, R2=18.0	USNO-B1
105.2	16.2559	33.9571	B1=20.5, B2=20.2, I=18.5, R1=18.9, R2=19.1	USNO-B1
105.5	16.2671	33.9103	B1=20.6, B2=19.9, I=18.6, R2=19.2	USNO-B1
106.2	16.2671	33.9100	R1=18.6, R2=19.1	USNO-B1
107.7	16.2420	33.9603	B2=20.5, R1=16.9, R2=19.1	USNO-B1
108.9	16.2143	33.9101	h=11.9, j=12.3, k=11.7	2MASS
108.9	16.2143	33.9101	B1=15.7, B2=15.5, I=12.8, R1=13.4, R2=13.5	USNO-B1
110.4	16.2483	33.9605	B1=20.6, B2=20.8, I=17.9, R1=18.6, R2=18.3	USNO-B1
115.5	16.2029	33.9339	B1=19.8, B2=20.0, I=17.6, R1=17.7, R2=17.7	USNO-B1
115.7	16.2198	33.9037	B1=20.1, B2=20.0, I=17.5, R1=17.8, R2=17.9	USNO-B1
120.9	16.2560	33.8991	B2=20.8, I=18.2, R1=18.8, R2=18.9	USNO-B1
125.7	16.2815	33.9410	B2=20.1, I=18.4, R1=18.9, R2=19.0	USNO-B1
128.2	16.2140	33.9030	B1=20.6, R1=19.0	USNO-B1
128.6	16.2080	33.9529	B2=20.2, I=18.5, R1=18.9, R2=19.0	USNO-B1
130.9	16.2657	33.9001	B1=20.6, I=18.5, R2=19.1	USNO-B1
131.3	16.2852	33.9340	I=18.5, R1=18.6	USNO-B1
133.2	16.2668	33.9000	B1=20.7, R2=19.2	USNO-B1
136.6	16.2741	33.9569	B1=20.7, B2=20.8, I=18.3, R1=18.6, R2=18.8	USNO-B1
142.2	16.2714	33.9611	B1=20.8, B2=20.8, I=17.5, R1=18.1, R2=18.6	USNO-B1
142.2	16.2714	33.9611	h=15.4, j=16.1, k=15.3	2MASS
142.3	16.2522	33.8919	B1=20.4, B2=20.4	USNO-B1
142.4	16.2145	33.9631	h=16.3, j=17.1, k=16.0	2MASS
143.5	16.2212	33.8942	B1=18.7, B2=19.0, I=16.8, R1=17.1, R2=16.9	USNO-B1
143.6	16.2212	33.8942	h=15.9, j=16.2, k=15.4	2MASS
143.6	16.2488	33.9698	h=13.5, j=13.8, k=13.5	2MASS
143.7	16.2488	33.9698	B1=15.8, B2=16.1, I=14.0, R1=14.4, R2=14.7	USNO-B1
145.7	16.2265	33.9690	B1=20.6, B2=20.9, R1=18.5, R2=19.1	USNO-B1
146.7	16.2787	33.9569	B1=20.6, I=18.6, R1=19.0	USNO-B1
148.1	16.2255	33.9694	B1=20.8, B2=19.7, I=16.6, R1=17.2, R2=17.4	USNO-B1
150.9	16.1921	33.9211	B2=19.0, I=18.7, R1=19.0, R2=19.1	USNO-B1
151.5	16.2244	33.8908	h=15.7, j=16.2, k=15.5	2MASS
152.3	16.2241	33.8906	B2=20.5, I=18.0, R1=19.0, R2=19.2	USNO-B1
152.5	16.2922	33.9347	B1=20.7, B2=20.8, R1=19.0, R2=19.1	USNO-B1
155.1	16.2822	33.9571	B1=20.6, B2=20.7, I=18.5, R1=18.7, R2=18.9	USNO-B1
155.4	16.2806	33.9588	R1=19.0, R2=18.7	USNO-B1
157.2	16.1928	33.9470	B1=20.2, B2=20.0, I=18.7, R2=19.0	USNO-B1
157.9	16.2345	33.8869	B2=20.5, I=18.5, R2=19.2	USNO-B1
159.9	16.2892	33.9104	B1=20.3, B2=20.4, I=18.3, R1=18.7, R2=18.3	USNO-B1
160.9	16.2896	33.9104	B1=20.6, B2=20.7, R1=19.1, R2=19.1	USNO-B1
161.0	16.2004	33.9014	I=18.4, R2=19.1	USNO-B1
161.4	16.2003	33.9013	h=16.9, j=16.9, k=15.7	2MASS
163.3	16.2906	33.9107	B1=20.8, B2=19.4, R1=18.9	USNO-B1
164.4	16.2947	33.9419	B2=20.3, I=18.5, R1=18.8, R2=19.0	USNO-B1
164.5	16.2947	33.9418	h=16.3, j=17.1, k=15.9	2MASS
164.8	16.1863	33.9333	h=14.7, j=15.3, k=14.4	2MASS
164.8	16.1863	33.9334	B1=20.5, B2=20.0, I=16.4, R1=17.1, R2=17.0	USNO-B1
164.9	16.2452	33.9761	B1=19.2, R2=19.1	USNO-B1
167.3	16.2322	33.8845	B1=20.8, B2=20.8, I=18.1, R1=18.4, R2=18.6	USNO-B1
170.0	16.1903	33.9513	B1=20.7, B2=20.5, R2=19.0	USNO-B1
171.1	16.1959	33.9593	B1=20.4, B2=20.8, I=18.2, R1=18.8, R2=19.1	USNO-B1
171.1	16.2827	33.8974	I=18.6, R1=18.9	USNO-B1
171.2	16.1959	33.9593	h=16.1, j=16.8, k=15.5	2MASS
171.3	16.2964	33.9170	B1=20.6, B2=20.6	USNO-B1
172.0	16.2933	33.9511	B1=20.6, R2=18.7	USNO-B1
173.1	16.2789	33.8937	B1=20.5, R1=19.0, R2=19.0	USNO-B1
175.5	16.2959	33.9487	B1=20.7, B2=20.8, I=18.6, R1=19.0, R2=19.0	USNO-B1
177.4	16.2376	33.9796	B2=19.4, R1=18.9, R2=19.2	USNO-B1
178.6	16.2743	33.8890	B2=19.7, R1=19.0, R2=19.1	USNO-B1
181.1	16.2750	33.8885	B1=20.7, B2=20.8, I=17.1, R1=18.5, R2=18.4	USNO-B1
181.5	16.2750	33.8884	h=15.0, j=15.8, k=14.8	2MASS
182.0	16.2664	33.8843	B1=20.6, B2=20.9, R2=19.1	USNO-B1
183.1	16.2615	33.8823	B1=20.8, B2=20.6, R1=19.1	USNO-B1
185.1	16.1905	33.9011	B1=20.6, B2=21.0, R2=19.1	USNO-B1
187.5	16.2996	33.9499	B1=20.1, B2=18.7, I=18.6, R2=19.1	USNO-B1
187.7	16.2639	33.8817	I=18.4, R1=19.0	USNO-B1
189.6	16.3004	33.9498	B2=20.1, I=18.7, R1=18.8	USNO-B1
191.3	16.2668	33.8816	h=11.2, j=11.5, k=11.2	2MASS
191.4	16.2668	33.8816	B1=13.6, B2=13.2, I=11.5, R1=12.0, R2=12.1	USNO-B1
191.8	16.3008	33.9507	B1=20.8, B2=21.0, I=18.6, R1=19.0, R2=19.1	USNO-B1
192.1	16.2150	33.8817	B2=20.6, I=18.6, R1=19.0, R2=19.1	USNO-B1
193.8	16.2078	33.9764	B1=17.4, B2=17.6, I=15.6, R1=15.8, R2=16.0	USNO-B1
193.8	16.2078	33.9764	h=14.9, j=15.3, k=14.9	2MASS
194.2	16.1935	33.9669	B1=20.7, R1=18.8	USNO-B1
194.2	16.1955	33.8922	B1=19.4, B2=20.8, I=18.1, R1=18.9, R2=19.0	USNO-B1
194.8	16.2794	33.9744	B1=20.3, B2=20.2, I=18.3, R1=18.4, R2=18.6	USNO-B1
195.1	16.2121	33.9788	B1=20.7, B2=20.8, I=17.1, R1=18.5, R2=18.6	USNO-B1
196.2	16.2116	33.9790	B1=20.7, R1=18.3	USNO-B1
196.3	16.2282	33.8770	R1=19.0, R2=19.1	USNO-B1
199.0	16.2354	33.9855	h=15.8, j=16.8, k=15.4	2MASS
199.1	16.2354	33.9855	B1=20.8, B2=20.8, I=17.4, R1=18.4, R2=18.4	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.