Swift Trigger: 599546;

Presumed name: GRB 140521A

BAT	21^h 20^m 03.12^s, +67° 36′ 07.2″
position:	(320.013, +67.602 ± 180″)
XRT	No position available.
UVOT	No position available.
Galactic N_HI:	2.73×10⁰ cm^-2
Galactic E(B-V):	0.835 mag

Best RA:	21^h 20^m 03.12^s	= 320.013 d
Best Dec:	+67° 36′ 07.2″	= +67.602 d

Gal Lat:	12.52
Gal Long:	104.81

Sun angle:	74.42°, 6.6 hr West

Galaxies within 3.33 of BAT position

	RA*	Dec*		Catalogue
12.6	320.0061	67.6043	B1=20.6, B2=20.6, I=17.4, R1=18.9, R2=18.6	USNO-B1
13.5	320.0053	67.6043	B=21.1, R=19.2	APM-N
17.0	320.0107	67.5974	B=20.5, R=18.5	APM-N
20.2	319.9983	67.6022	B1=19.5, B2=20.2, I=18.4, R1=18.9, R2=19.0	USNO-B1
20.4	319.9982	67.6021	B=20.8, R=19.8	APM-N
23.9	320.0255	67.5974	I=18.9, R2=19.4	USNO-B1
30.6	320.0284	67.6082	B=21.1, R=19.0	APM-N
31.7	320.0035	67.6100	B2=20.9, I=19.1, R1=19.2, R2=19.5	USNO-B1
31.8	320.0204	67.5936	B1=19.9, R1=19.2, R2=19.5	USNO-B1
37.5	319.9998	67.5929	B2=21.1, R1=19.4, R2=19.3	USNO-B1
42.6	320.0066	67.6136	B=20.4, R=18.8	APM-N
47.0	319.9819	67.6074	B1=20.5, B2=20.6, I=18.3, R2=19.2	USNO-B1
52.7	319.9848	67.6120	B=21.1, R=18.8	APM-N
55.9	320.0536	67.6010	B2=20.8, I=17.8, R1=18.7, R2=18.0	USNO-B1
58.6	320.0550	67.5991	B1=20.2, B2=20.3, I=18.2, R1=18.5, R2=18.3	USNO-B1
59.0	320.0553	67.5990	B=21.1, R=18.8	APM-N
59.9	320.0492	67.6113	B2=20.9, I=19.4, R1=19.4, R2=19.6	USNO-B1
61.8	319.9809	67.6141	B1=19.0, R2=19.5	USNO-B1
62.1	319.9855	67.5883	B=21.1, R=19.5	APM-N
62.8	319.9853	67.5881	B1=20.4, I=18.2, R2=18.3	USNO-B1
73.3	320.0469	67.5863	I=18.7, R1=19.0, R2=19.2	USNO-B1
73.4	320.0663	67.6000	I=19.0, R2=19.6	USNO-B1
73.9	320.0343	67.5831	B=19.4, R=17.1	APM-N
74.8	320.0339	67.5828	B1=19.6, B2=19.8, I=16.2	USNO-B1
75.7	320.0179	67.6229	B=21.1, R=18.4	APM-N
75.9	320.0182	67.5810	B=20.1, R=18.1	APM-N
76.3	320.0598	67.5906	B2=21.2, I=18.9, R1=19.3, R2=19.5	USNO-B1
78.6	320.0588	67.6151	I=19.0, R1=19.3, R2=19.5	USNO-B1
79.8	319.9573	67.5956	B1=20.1, R1=19.3	USNO-B1
82.3	320.0481	67.6205	B2=20.6, I=19.3, R1=18.9, R2=19.4	USNO-B1
83.3	320.0551	67.5853	B2=20.8, I=17.9, R1=18.8, R2=18.8	USNO-B1
83.6	320.0549	67.5852	B=21.1, R=19.6	APM-N
84.5	320.0572	67.5856	B2=20.6, I=17.9, R1=18.7, R2=19.2	USNO-B1
85.5	319.9525	67.6078	B1=19.6, B2=20.9, I=17.8, R1=19.1, R2=18.9	USNO-B1
89.3	320.0611	67.5853	B2=20.6, R2=19.4	USNO-B1
89.6	319.9562	67.6143	B=17.9, R=16.5	APM-N
90.9	319.9479	67.5974	B=21.1, R=19.1	APM-N
93.6	319.9668	67.5829	B1=20.2, B2=20.8, I=18.5, R1=19.0, R2=19.4	USNO-B1
95.5	320.0108	67.6286		NED
95.8	320.0694	67.6177	B=19.8, R=18.5	APM-N
95.9	320.0737	67.5888	B2=20.9, I=18.7, R1=19.1, R2=18.9	USNO-B1
95.9	320.0108	67.6286	I=18.7, R2=19.5	USNO-B1
95.9	320.0736	67.5887	B=21.1, R=19.2	APM-N
98.2	319.9442	67.6095	B1=19.4, B2=19.8, I=16.9	USNO-B1
99.5	320.0193	67.6295	B=20.1, R=17.5	APM-N
99.9	320.0003	67.5747	I=18.8, R2=19.5	USNO-B1
100.0	319.9457	67.5914	B=21.1, R=19.2	APM-N
100.0	319.9455	67.5915	B2=20.9, I=18.2, R1=18.6, R2=18.7	USNO-B1
101.1	320.0183	67.6300	B1=19.6, B2=20.0, R1=17.1	USNO-B1
102.1	319.9412	67.6095	B1=17.7, B2=17.8, I=15.2, R1=15.4, R2=15.6	USNO-B1
104.4	320.0066	67.5731	B2=21.0, R2=19.5	USNO-B1
105.6	320.0513	67.6275	B2=21.2, I=18.1, R1=19.0, R2=19.1	USNO-B1
106.9	320.0523	67.6276	B2=20.7, I=18.3, R2=18.0	USNO-B1
109.3	320.0541	67.6280	I=17.4, R2=18.2	USNO-B1
110.0	320.0532	67.6284	B2=20.6, I=18.5, R1=19.1, R2=17.7	USNO-B1
110.1	320.0907	67.5944	B1=20.1, B2=21.0, I=18.5, R1=19.0, R2=18.9	USNO-B1
111.0	320.0555	67.6283	B1=20.0, B2=20.3, I=18.8, R1=18.9, R2=18.7	USNO-B1
114.7	320.0177	67.6338	B2=21.1, R2=19.4	USNO-B1
116.1	320.0725	67.6249	I=18.1, R2=19.1	USNO-B1
116.6	319.9288	67.6064	B=20.3, R=18.1	APM-N
117.1	319.9691	67.6299	B=21.1, R=19.8	APM-N
117.5	320.0174	67.6346	B1=19.8, B2=20.1, R2=19.4	USNO-B1
120.3	319.9258	67.5984	B1=20.0, B2=20.4, I=18.1, R1=19.1, R2=18.6	USNO-B1
122.5	319.9571	67.5755	B1=19.4, R1=18.2	USNO-B1
124.2	319.9245	67.6093	B1=19.4, I=17.6, R1=19.0	USNO-B1
127.0	319.9877	67.6359	B2=20.9, I=18.4, R2=19.3	USNO-B1
127.3	319.9230	67.5934	B1=20.5, R2=19.2	USNO-B1
127.9	319.9287	67.6172	I=18.4, R1=17.6	USNO-B1
128.3	319.9332	67.6206	B2=20.4, R1=19.4	USNO-B1
129.1	320.0396	67.6364	B1=20.1, B2=20.8, I=18.8, R1=18.8, R2=19.2	USNO-B1
131.6	319.9417	67.5776	B2=20.7, R1=19.1, R2=18.2	USNO-B1
132.6	319.9411	67.5774	B2=21.0, I=17.9, R1=18.6, R2=18.6	USNO-B1
133.1	319.9413	67.5771	B=21.1, R=19.9	APM-N
133.8	319.9381	67.5782	I=19.1, R1=19.4	USNO-B1
135.1	319.9147	67.5996	B2=21.1, R1=19.4	USNO-B1
135.3	320.0400	67.6382	B1=20.7, B2=20.7	USNO-B1
141.4	320.0473	67.5650	B1=18.7, B2=18.5, I=16.3, R1=16.8, R2=17.2	USNO-B1
143.9	319.9286	67.5783	I=19.1, R1=19.5	USNO-B1
144.1	320.0437	67.6403	I=19.0, R1=19.2, R2=19.4	USNO-B1
146.7	319.9305	67.6279	B2=20.9, I=18.9, R1=19.1, R2=19.4	USNO-B1
150.7	320.0117	67.6439	B=20.7, R=19.9	APM-N
151.1	320.1051	67.6250	B2=20.9, I=19.1	USNO-B1
154.2	320.0845	67.6351	B1=20.2, R1=18.8	USNO-B1
155.9	320.0704	67.5646	B=21.1, R=19.0	APM-N
156.3	319.9281	67.6310	B2=19.4, I=18.4, R1=19.1, R2=18.9	USNO-B1
156.5	320.0017	67.6453	B2=21.2, R2=19.5	USNO-B1
157.0	320.1169	67.6203	B=21.1, R=19.1	APM-N
159.4	319.9540	67.5638	B1=20.2, B2=20.7, R2=19.5	USNO-B1
159.7	320.1106	67.6262	B1=20.3, B2=21.1, I=18.0, R2=19.5	USNO-B1
160.5	319.9050	67.5849	B2=20.3, R1=19.1	USNO-B1
161.3	320.0438	67.5588	B1=20.8, R2=19.4	USNO-B1
162.3	320.0954	67.6344	I=15.5, R1=18.6	USNO-B1
162.4	319.8947	67.6005	I=18.9, R1=19.4	USNO-B1
163.3	319.8960	67.6105	B2=21.0, I=18.5, R1=18.8, R2=18.8	USNO-B1
164.3	320.0598	67.6440	I=18.1, R2=19.3	USNO-B1
164.8	320.0607	67.6440	B1=20.5, B2=21.2, I=18.7, R2=19.2	USNO-B1
165.0	320.0586	67.6444	B1=20.6, B2=21.0, R2=18.9	USNO-B1
165.3	320.0596	67.6444	B=21.1, R=19.5	APM-N
165.3	320.0603	67.6442	R1=19.0, R2=19.1	USNO-B1
165.3	320.0966	67.6351	B1=17.6, B2=21.1, I=17.6	USNO-B1
166.0	320.0913	67.5669	B=21.1, R=19.6	APM-N
166.2	319.9361	67.5664	B1=20.2, B2=20.6, R2=19.4	USNO-B1
166.6	319.9957	67.5562	B=21.1, R=18.7	APM-N
166.8	319.8933	67.5938	R1=19.2, R2=19.4	USNO-B1
168.3	320.1319	67.5905	B=19.8, R=17.2	APM-N
168.3	320.1322	67.5909	B1=19.4, B2=19.2, I=16.6, R2=19.6	USNO-B1
170.8	320.0256	67.6492	B2=20.4, R1=19.3	USNO-B1
171.5	319.8970	67.6199	B=21.1, R=19.3	APM-N
171.6	319.9270	67.5674	B=20.5, R=18.3	APM-N
172.0	320.0248	67.6496	B1=20.2, B2=20.7, R2=19.5	USNO-B1
172.3	320.0049	67.5542	B1=20.1, R2=19.3	USNO-B1
174.7	320.1217	67.6273	B1=20.3, B2=20.8, I=18.4, R1=18.6, R2=18.7	USNO-B1
174.8	319.8909	67.6159	B2=20.3, R2=19.3	USNO-B1
175.4	320.0039	67.5534	R1=19.3, R2=19.6	USNO-B1
175.7	320.0427	67.6495	I=19.3, R2=19.6	USNO-B1
176.8	319.8902	67.5872	B2=21.1, I=19.0, R1=19.4, R2=19.3	USNO-B1
177.2	320.0521	67.5551	B1=19.0, I=18.8, R2=19.5	USNO-B1
177.8	320.1255	67.5775	B=21.1, R=20.0	APM-N
177.9	320.0456	67.6498	B1=20.5, R2=19.5	USNO-B1
178.0	320.1258	67.5776	B2=20.6, I=18.9, R1=19.2, R2=19.2	USNO-B1
178.2	320.1063	67.5676	B2=20.3, I=18.6, R2=19.0	USNO-B1
178.9	320.1369	67.6176	B2=21.0, I=18.9, R2=19.5	USNO-B1
179.0	319.9511	67.6458	B=18.8, R=17.6	APM-N
179.4	319.9323	67.6412	B1=20.0, I=18.4	USNO-B1
179.6	320.1385	67.5878	B2=20.2, I=18.9	USNO-B1
179.7	319.8850	67.6127	B1=20.0, B2=20.3, I=17.6, R1=18.4, R2=17.9	USNO-B1
179.8	319.8849	67.6125	B=20.7, R=18.7	APM-N
180.5	319.9239	67.5651	I=19.1, R2=19.6	USNO-B1
181.2	320.0021	67.5518	B=21.1, R=19.0	APM-N
182.1	319.9293	67.6413	B1=19.9, I=18.3	USNO-B1
183.2	320.0493	67.6510	h=14.2, j=15.1, k=13.8	2MASS
183.3	320.0492	67.6511		NED
183.6	319.9622	67.6492	B=21.1, R=19.9	APM-N
184.3	320.1473	67.6029	B2=21.0, I=18.9, R1=19.5	USNO-B1
184.5	319.8799	67.5946	I=18.8, R2=19.5	USNO-B1
184.6	319.9636	67.6497	B1=20.7, B2=20.8, R1=19.4, R2=19.4	USNO-B1
184.8	320.0496	67.6514	B1=19.5, B2=18.9, I=16.0, R2=15.8	USNO-B1
186.0	319.9413	67.6459	B1=20.8, R2=19.6	USNO-B1
186.5	320.0330	67.6532	B2=20.6, R2=18.7	USNO-B1
186.5	320.1474	67.6098	B2=20.8, I=19.1, R2=19.5	USNO-B1
186.8	320.0496	67.6520	B=18.9, R=16.7	APM-N
187.2	320.0294	67.6536	I=18.9, R2=18.6	USNO-B1
188.9	320.1483	67.5923	B=20.3, R=18.7	APM-N
189.5	320.0314	67.6542	I=18.5, R2=18.6	USNO-B1
189.8	320.1036	67.6418	I=18.6, R2=19.5	USNO-B1
189.8	320.1022	67.6423	B2=21.0, I=18.6, R1=19.2, R2=19.1	USNO-B1
190.4	319.8842	67.6218	B2=20.9, R1=19.3, R2=19.5	USNO-B1
190.7	320.0501	67.6530	B1=20.4, B2=18.9, I=16.6	USNO-B1
191.2	320.0847	67.5565	B1=20.8, R2=19.5	USNO-B1
191.3	319.8834	67.5825	B=19.9, R=20.0	APM-N
192.1	319.9110	67.5654	B1=18.1, B2=21.0, R2=19.5	USNO-B1
192.8	319.8774	67.6162	B2=21.1, R1=19.1, R2=19.5	USNO-B1
193.4	319.9094	67.5656	B=20.9, R=20.0	APM-N
194.2	320.1544	67.6041	B2=20.9, I=18.5, R1=19.5, R2=19.1	USNO-B1
194.3	319.9590	67.6519	B2=20.6, I=19.1, R1=19.0, R2=19.4	USNO-B1
194.6	319.8839	67.6244	B1=20.4, R1=19.2, R2=19.5	USNO-B1
196.7	319.8890	67.5746	B1=19.9, I=18.4, R1=17.9, R2=19.2	USNO-B1
197.0	319.9059	67.6385	B=20.6, R=19.2	APM-N
197.1	320.1072	67.5607	B=19.1, R=17.8	APM-N
197.2	319.9926	67.5478	B1=19.9, R1=19.1	USNO-B1
197.2	320.0179	67.6567	B2=20.8, I=18.7, R2=19.4	USNO-B1
197.4	320.0184	67.6568	B2=21.1, I=19.0, R1=19.3, R2=19.4	USNO-B1
197.6	319.9050	67.5657	B1=19.0, B2=21.0, I=18.6, R1=19.0, R2=18.9	USNO-B1
197.6	320.1529	67.6152	B=21.1, R=19.0	APM-N
198.5	319.9897	67.5476	B1=20.2, I=17.8	USNO-B1
198.7	319.9908	67.5475	B=21.1, R=18.2	APM-N
198.9	319.9913	67.5475		NED
198.9	320.1468	67.5808	R1=19.2, R2=17.6	USNO-B1
199.0	319.9914	67.5473	h=14.1, j=15.0, k=13.5	2MASS
199.1	319.8797	67.6239	B=21.1, R=19.9	APM-N
199.5	320.1044	67.5589	B2=19.4, I=17.5, R2=16.5	USNO-B1
199.6	320.1048	67.6450	B2=20.8, I=19.2, R2=19.4	USNO-B1
199.7	319.8996	67.5672	B1=20.1, R2=17.9	USNO-B1
199.8	319.9020	67.5661	B2=21.0, R1=19.1, R2=18.0	USNO-B1

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