Swift Trigger: 454473;

Presumed name: GRB 110530A

BAT	18^h 48^m 10.80^s, +61° 55′ 55.2″
position:	(282.045, 61.932 ± 180″)
XRT	18^h 48^m 16.61^s, +61° 55′ 44.8″
position:	(282.0692, 61.9291 ± 2.0″)
UVOT	18^h 48^m 16.34^s, +61° 55′ 45.1″
position:	(282.0681, +61.9292 ± 0.7″)
Galactic N_HI:	0.00×10⁰ cm^-2
Galactic E(B-V):	0.058 mag

Best RA:	18^h 48^m 16.34^s	= 282.0681 d
Best Dec:	+61° 55′ 45.1″	= +61.9292 d

Gal Lat:
Gal Long:

Sun angle:	91.76°, 9.7 hr West

¹Sper #9 auto processing.

Stars within 3.33 of UVOT position

	RA*	Dec*		Catalogue
17.5	282.0752	61.9327	h=15.0, j=15.6, k=14.6	2MASS
17.9	282.0752	61.9329	B1=19.2, B2=18.6, I=16.1, R1=17.6, R2=17.1	USNO-B1
18.1	282.0735	61.9249	B2=20.9, R1=18.9, R2=19.8	USNO-B1
18.9	282.0673	61.9240	B2=20.7, I=18.4, R1=18.8, R2=19.2	USNO-B1
22.2	282.0555	61.9275	B2=21.0, I=18.5, R2=19.4	USNO-B1
29.8	282.0660	61.9374	h=14.1, j=14.8, k=13.9	2MASS
30.0	282.0661	61.9375	B1=17.8, B2=17.5, I=14.9, R1=16.4, R2=16.1	USNO-B1
35.6	282.0801	61.9211	I=18.4, R1=19.7, R2=19.8	USNO-B1
37.8	282.0581	61.9386	B2=21.0, R2=20.3	USNO-B1
41.0	282.0439	61.9289	h=13.5, j=14.1, k=13.3	2MASS
41.3	282.0437	61.9290	B1=17.6, B2=17.5, I=15.1, R1=16.1, R2=16.1	USNO-B1
41.3	282.0674	61.9407	h=15.7, j=16.1, k=15.2	2MASS
47.7	282.0506	61.9396	B1=19.9, B2=19.8, I=18.1, R1=19.2, R2=18.8	USNO-B1
54.6	282.0821	61.9429	B2=20.8, I=18.1, R1=19.5, R2=19.2	USNO-B1
55.1	282.0356	61.9281	h=15.9, j=16.2, k=17.0	2MASS
55.3	282.0813	61.9433	B2=21.0, R2=18.9	USNO-B1
55.5	282.0354	61.9282	B1=17.4, B2=17.1, I=16.3, R1=17.0, R2=16.9	USNO-B1
56.3	282.0349	61.9283	B1=17.5, I=16.9, R2=17.2	USNO-B1
63.1	282.0996	61.9198	h=14.3, j=14.7, k=14.2	2MASS
63.3	282.0997	61.9199	B1=16.6, B2=16.1, I=14.8, R1=15.6, R2=15.3	USNO-B1
63.6	282.0804	61.9125	B1=15.4, B2=15.2, I=13.2, R1=14.3, R2=14.0	USNO-B1
63.7	282.0803	61.9125	h=12.8, j=13.2, k=12.7	2MASS
66.3	282.0430	61.9151	h=15.7, j=16.6, k=15.6	2MASS
66.4	282.0427	61.9152	B2=21.1, I=18.3, R1=19.7, R2=19.5	USNO-B1
69.5	282.0481	61.9461	B1=19.2, B2=18.7, I=17.5, R1=18.2, R2=17.8	USNO-B1
70.7	282.0954	61.9441	h=15.1, j=15.5, k=15.1	2MASS
70.7	282.1030	61.9184	B2=20.9, R2=19.8	USNO-B1
70.9	282.0956	61.9441	B1=16.7, B2=16.5, I=15.5, R1=16.4, R2=16.1	USNO-B1
71.8	282.1037	61.9184	B2=20.9, R1=19.9, R2=19.7	USNO-B1
80.8	282.1107	61.9393	h=14.7, j=15.0, k=14.5	2MASS
80.9	282.1107	61.9393	B1=16.5, B2=16.2, I=15.6, R1=15.7, R2=15.8	USNO-B1
81.4	282.0544	61.9509	I=18.4, R1=19.7	USNO-B1
84.6	282.1145	61.9206	h=14.0, j=14.5, k=14.0	2MASS
84.7	282.1146	61.9206	B1=16.5, B2=16.2, I=14.3, R1=15.7, R2=15.4	USNO-B1
85.9	282.1159	61.9212	I=15.2, R2=19.6	USNO-B1
88.7	282.0259	61.9146	h=16.1, j=16.1, k=15.6	2MASS
89.7	282.0252	61.9146	B1=17.6, B2=17.4, I=16.4, R1=17.1, R2=16.9	USNO-B1
91.7	282.1130	61.9149	B1=16.9, B2=16.7, I=15.5, R1=16.3, R2=16.2	USNO-B1
91.9	282.1129	61.9148	h=15.5, j=15.6, k=14.9	2MASS
93.0	282.0428	61.9063	B2=20.6, I=18.1, R1=19.7, R2=19.3	USNO-B1
93.0	282.0918	61.9059	B1=16.1, B2=15.8, I=15.3, R1=15.8, R2=15.6	USNO-B1
93.0	282.0918	61.9059	h=15.2, j=15.3, k=14.8	2MASS
96.5	282.0180	61.9419	B1=20.9, B2=20.5, I=18.4, R1=20.1, R2=19.8	USNO-B1
98.3	282.0935	61.9537	h=10.9, j=11.3, k=10.8	2MASS
98.4	282.0937	61.9537	B1=13.7, B2=13.3, I=11.9, R1=12.1, R2=12.3	USNO-B1
98.4	282.1254	61.9336	B1=20.5, B2=20.6, I=18.4, R1=19.9, R2=19.5	USNO-B1
99.4	282.1236	61.9382	B1=20.4, B2=20.3, I=17.6, R1=19.1, R2=18.7	USNO-B1
100.7	282.1024	61.9064	B2=20.7, R1=20.0, R2=19.8	USNO-B1
101.0	282.1249	61.9207	h=16.2, j=17.3, k=15.5	2MASS
102.2	282.0846	61.9019	B1=19.1, B2=19.0, I=15.4, R1=17.2, R2=16.8	USNO-B1
102.2	282.0844	61.9019	h=14.0, j=14.7, k=13.8	2MASS
102.3	282.1001	61.9533	B1=16.5, B2=16.0, I=15.0, R1=16.1, R2=14.8	USNO-B1
102.6	282.1005	61.9533	h=14.8, j=15.1, k=14.5	2MASS
104.2	282.1296	61.9296	h=15.0, j=15.5, k=15.3	2MASS
104.2	282.1296	61.9296	B1=17.1, B2=17.0, I=15.7, R1=16.9, R2=16.2	USNO-B1
105.2	282.0176	61.9462	h=16.1, j=16.5, k=15.4	2MASS
106.0	282.0203	61.9102	B1=14.8, B2=14.6, I=13.2, R1=13.9, R2=13.9	USNO-B1
106.1	282.0203	61.9102	h=13.1, j=13.4, k=13.1	2MASS
107.1	282.1217	61.9450	B1=18.8, B2=19.0, I=17.0, R1=18.6, R2=17.7	USNO-B1
107.1	282.1228	61.9143	B2=16.9, I=15.9, R1=20.1, R2=16.4	USNO-B1
107.9	282.1226	61.9137	B1=16.9, B2=16.7, I=16.5, R1=17.1, R2=16.3	USNO-B1
108.1	282.1228	61.9137	h=15.5, j=16.0, k=15.4	2MASS
109.0	282.1121	61.9071	B1=21.0, B2=20.7, I=18.1, R1=19.4, R2=19.1	USNO-B1
109.6	282.1108	61.9521	B2=21.3, R1=19.9, R2=19.9	USNO-B1
110.5	282.0062	61.9196	I=18.2, R1=18.0, R2=19.6	USNO-B1
110.8	282.0054	61.9205	B2=20.3, I=17.6, R1=20.1, R2=18.3	USNO-B1
111.1	282.0061	61.9191	B2=20.9, I=18.1, R1=18.8, R2=19.6	USNO-B1
112.5	282.1080	61.9542	I=17.9, R1=20.0, R2=20.1	USNO-B1
114.2	282.0319	61.9024	B1=20.5, B2=21.1, I=18.4, R1=19.7, R2=19.2	USNO-B1
114.3	282.0092	61.9137	h=16.0, j=16.6, k=14.8	2MASS
114.7	282.0091	61.9136	B2=20.9, I=18.0, R1=19.6, R2=19.8	USNO-B1
115.5	282.0110	61.9467	B1=20.8, B2=21.4, I=18.5, R1=20.0, R2=19.9	USNO-B1
116.6	282.0426	61.9593	B1=20.3, B2=20.6, I=18.7, R1=19.7, R2=19.4	USNO-B1
117.2	282.1342	61.9195	B2=20.9, R1=20.0, R2=19.9	USNO-B1
117.8	282.0764	61.9617	I=18.4, R1=19.8, R2=19.7	USNO-B1
118.1	282.1366	61.9354	h=14.7, j=15.1, k=14.7	2MASS
118.4	282.1367	61.9354	B1=16.4, B2=16.1, I=15.0, R1=16.0, R2=15.7	USNO-B1
118.6	282.1375	61.9248	h=11.5, j=12.0, k=11.4	2MASS
118.8	282.1376	61.9248	B1=14.5, B2=14.2, I=12.2, R1=13.2, R2=13.1	USNO-B1
119.0	282.1372	61.9352	B1=16.5, I=15.7, R1=19.9, R2=16.1	USNO-B1
119.8	282.1329	61.9158	B1=19.7, B2=19.1, I=18.3, R1=17.5	USNO-B1
119.9	282.1327	61.9156	h=14.5, j=15.3, k=14.3	2MASS
121.0	282.0178	61.9531	I=18.4, R2=19.9	USNO-B1
121.6	282.0987	61.8986	R1=20.0, R2=19.8	USNO-B1
122.5	281.9984	61.9202	B1=20.9, R1=19.3	USNO-B1
123.3	282.0405	61.8975	B1=16.6, B2=16.2, I=14.8, R1=15.7, R2=15.2	USNO-B1
123.6	282.0406	61.8974	h=14.8, j=15.2, k=14.8	2MASS
128.7	282.0076	61.9076	h=16.2, j=17.1, k=15.4	2MASS
133.9	281.9910	61.9375	I=17.9, R2=19.9	USNO-B1
134.2	282.0349	61.9631	B2=21.4, I=18.4, R2=19.2	USNO-B1
135.2	281.9884	61.9276	B1=20.9, B2=21.4, R2=19.9	USNO-B1
136.5	282.1477	61.9232	I=18.4, R2=19.9	USNO-B1
136.9	282.0374	61.9644	h=15.1, j=15.4, k=15.0	2MASS
137.0	282.0373	61.9644	B1=16.5, B2=17.5, I=15.9, R1=16.2, R2=16.1	USNO-B1
137.9	281.9929	61.9439	h=15.0, j=15.3, k=14.8	2MASS
138.2	281.9928	61.9440	B1=16.9, B2=15.9, I=14.9, R1=15.9, R2=15.6	USNO-B1
144.2	282.0863	61.9683	B2=21.3, R1=19.7, R2=19.9	USNO-B1
145.4	281.9855	61.9184	R1=18.6, R2=19.9	USNO-B1
145.6	282.0515	61.8895	B1=16.4, B2=16.2, I=15.1, R1=15.9, R2=15.4	USNO-B1
145.7	282.0288	61.8932	B2=20.9, I=18.2, R1=19.9, R2=19.4	USNO-B1
145.8	282.0516	61.8895	h=14.7, j=15.1, k=14.6	2MASS
146.9	282.1537	61.9227	B1=20.2, B2=20.1, I=18.1, R1=19.4, R2=18.9	USNO-B1
148.0	282.0241	61.9647	h=16.1, j=16.3, k=15.9	2MASS
148.5	282.0240	61.9649	B1=19.4, B2=19.0, I=17.4, R1=18.0, R2=17.6	USNO-B1
150.4	282.1431	61.9068	h=15.3, j=15.9, k=15.2	2MASS
151.1	281.9845	61.9438	B2=20.8, I=18.3, R1=19.1, R2=19.3	USNO-B1
151.8	282.0433	61.8887	B2=21.0, I=18.4, R1=19.9, R2=19.8	USNO-B1
152.7	281.9945	61.9047	B1=21.1, B2=21.3, I=18.4, R2=19.6	USNO-B1
153.6	281.9945	61.9541	h=16.3, j=17.0, k=15.4	2MASS
153.7	282.1511	61.9465	h=16.1, j=16.1, k=14.7	2MASS
153.9	282.1447	61.9063	B2=20.8, R2=16.3	USNO-B1
154.2	281.9942	61.9542	B2=20.8, I=17.8, R1=19.5, R2=19.7	USNO-B1
154.3	282.1514	61.9465	B1=16.9, B2=16.6, I=15.6, R1=16.6, R2=16.2	USNO-B1
155.0	282.0406	61.9703	B1=19.4, B2=20.5, I=18.4, R1=19.5, R2=19.0	USNO-B1
155.3	282.1460	61.9065	B1=18.8, B2=18.6, I=17.3, R1=18.6, R2=17.3	USNO-B1
155.6	282.0092	61.8961	h=12.9, j=13.3, k=12.9	2MASS
155.6	282.0092	61.8961	B1=14.9, B2=14.7, I=13.2, R1=13.9, R2=14.0	USNO-B1
155.7	282.1464	61.9066	h=16.0, j=16.6, k=15.8	2MASS
156.1	282.1525	61.9466	B1=17.0, I=16.9, R2=17.6	USNO-B1
160.2	281.9998	61.9600	h=15.6, j=16.2, k=15.1	2MASS
162.3	282.0192	61.8904	B1=19.4, B2=19.2, I=17.3, R1=18.4, R2=18.1	USNO-B1
162.4	282.0193	61.8904	h=15.5, j=16.5, k=14.7	2MASS
163.1	282.1167	61.8901	B2=21.0, R2=19.9	USNO-B1
163.6	281.9880	61.9547	B2=20.9, R1=19.7, R2=20.3	USNO-B1
163.6	282.1516	61.9520	B1=16.0, I=15.2, R2=15.6	USNO-B1
164.0	282.1519	61.9520	h=14.5, j=14.8, k=14.2	2MASS
164.2	282.1521	61.9520	B1=15.9, B2=15.7, I=14.5, R1=15.6, R2=15.2	USNO-B1
164.7	282.0876	61.8844	B1=17.5, B2=17.2, I=16.4, R1=17.5, R2=16.9	USNO-B1
165.3	281.9739	61.9412	h=16.0, j=17.0, k=15.7	2MASS
165.7	282.0878	61.8841	h=16.1, j=16.4, k=16.1	2MASS
165.8	282.0824	61.8836	h=16.0, j=16.2, k=15.4	2MASS
166.1	282.0824	61.8836	B1=19.2, B2=18.8, I=16.9, R1=18.0, R2=17.3	USNO-B1
166.1	281.9735	61.9413	B1=20.1, B2=19.5, I=17.6, R1=18.5, R2=18.6	USNO-B1
167.3	282.0646	61.9757	B2=20.8, I=18.4, R1=20.1, R2=19.9	USNO-B1
167.6	282.0931	61.8841	B2=20.9, I=17.6, R1=18.9, R2=19.1	USNO-B1
167.8	282.0928	61.8841	h=15.8, j=16.3, k=15.3	2MASS
167.8	282.0926	61.8840	B2=20.2, I=17.8, R1=19.1, R2=19.0	USNO-B1
167.9	282.1365	61.9629	B1=18.7, B2=18.0, I=17.3, R1=18.4, R2=17.6	USNO-B1
167.9	282.1365	61.9630	h=15.9, j=16.7, k=15.7	2MASS
168.0	282.0531	61.9753	B1=19.1, B2=18.8, I=17.9, R1=19.1, R2=18.3	USNO-B1
168.1	282.1047	61.9726	B2=20.7, I=18.0, R1=19.4, R2=19.5	USNO-B1
168.5	282.0641	61.9760	B2=21.2, R1=20.1, R2=20.0	USNO-B1
169.4	281.9750	61.9465	h=12.6, j=12.9, k=12.5	2MASS
170.0	281.9747	61.9465	B1=14.7, B2=13.9, I=12.3, R1=13.2, R2=13.1	USNO-B1
170.4	282.0662	61.9765	B2=20.9, R1=20.1	USNO-B1
170.7	282.1413	61.8967	B2=20.9, I=18.1, R1=19.9, R2=19.3	USNO-B1
170.7	282.1038	61.9735	B2=21.3, I=18.5, R2=19.7	USNO-B1
171.6	281.9737	61.9466	I=15.6, R2=13.7	USNO-B1
172.4	282.1657	61.9157	B1=17.6, B2=17.4, I=16.9, R1=17.6, R2=16.9	USNO-B1
174.4	282.1542	61.9558	B1=20.8, I=18.3, R2=19.9	USNO-B1
174.8	281.9717	61.9466	h=14.6, j=16.5, k=14.4	2MASS
178.5	282.1576	61.9554	B1=20.0, R2=19.7	USNO-B1
178.7	282.1344	61.9678	B2=18.6, R2=19.9	USNO-B1
179.2	282.1690	61.9442	I=18.3, R1=19.4, R2=18.9	USNO-B1
179.6	281.9803	61.9012	I=18.4, R1=20.1, R2=19.9	USNO-B1
180.9	282.1733	61.9206	B1=21.2, I=15.8, R2=15.6	USNO-B1
181.1	282.1733	61.9203	h=14.9, j=15.3, k=15.1	2MASS
181.3	282.1734	61.9203	B1=16.4, B2=16.1, I=15.2, R1=16.1, R2=15.7	USNO-B1
181.9	282.0693	61.8787	B1=19.5, B2=19.4, I=18.2, R1=19.3, R2=18.8	USNO-B1
182.0	282.1341	61.9691	B2=19.3, I=16.9, R2=17.5	USNO-B1
182.2	282.0049	61.9701	h=15.8, j=16.4, k=15.3	2MASS
182.2	282.1353	61.9687	B1=18.7, B2=18.3, I=16.5, R1=17.8, R2=17.1	USNO-B1
182.2	281.9630	61.9401	h=13.2, j=13.6, k=13.2	2MASS
182.2	281.9631	61.9402	B1=16.0, B2=15.1, I=13.4, R1=14.4, R2=14.3	USNO-B1
182.3	282.1353	61.9688	h=15.5, j=16.1, k=15.4	2MASS
183.1	282.0046	61.9704	B1=18.9, B2=19.2, I=17.5, R1=17.9, R2=17.4	USNO-B1
183.2	282.1142	61.9752	B1=15.8, B2=21.1, R2=20.4	USNO-B1
186.2	282.1573	61.9595	h=16.3, j=16.8, k=15.7	2MASS
186.9	282.1695	61.9087	B2=21.1, I=17.5, R1=19.7, R2=19.1	USNO-B1
187.8	281.9582	61.9361	B1=19.8, B2=19.2, R2=20.5	USNO-B1
188.1	282.0982	61.8789	B1=19.2, B2=18.8, I=17.1, R1=18.2, R2=17.7	USNO-B1
188.3	282.0979	61.8788	h=16.3, j=16.7, k=16.4	2MASS
189.4	282.1355	61.9712	B2=20.5, I=17.8, R1=19.6, R2=19.3	USNO-B1
190.1	282.1358	61.9713	B1=20.5, B2=20.2, I=18.3	USNO-B1
190.7	282.1363	61.9714	B1=20.1, B2=20.3, I=18.2, R1=19.3, R2=18.8	USNO-B1
191.3	281.9738	61.9585	h=15.9, j=16.7, k=15.6	2MASS
191.6	281.9599	61.9448	h=15.1, j=15.6, k=15.0	2MASS
191.7	281.9599	61.9449	B2=20.7, R1=18.8, R2=18.2	USNO-B1
192.0	281.9644	61.9078	B1=20.4, B2=20.5, R1=20.1, R2=19.9	USNO-B1
192.8	281.9791	61.8959	h=15.7, j=16.9, k=15.2	2MASS
193.2	281.9613	61.9480	B1=19.1, B2=18.5, I=17.9, R1=18.4, R2=17.9	USNO-B1
193.5	281.9785	61.8959	B1=19.7, R1=18.1, R2=16.7	USNO-B1
193.6	281.9592	61.9456	B1=15.5, B2=20.5, I=16.8, R2=18.8	USNO-B1
194.3	282.0401	61.8769	B2=20.5, I=18.5, R2=19.4	USNO-B1
194.8	282.0601	61.8752	B1=16.7, B2=16.5, I=15.6, R1=16.4, R2=15.9	USNO-B1
194.9	282.1596	61.9621	B1=20.9, B2=21.4, R2=19.9	USNO-B1
195.3	282.0601	61.8751	h=15.1, j=15.5, k=15.2	2MASS
195.4	281.9812	61.8935	B2=18.7, I=18.4, R1=18.4	USNO-B1
195.7	281.9807	61.8937	B1=19.3, B2=18.8, I=18.3, R1=19.1, R2=18.4	USNO-B1
197.1	281.9764	61.8955	B1=20.0, I=18.1, R2=19.9	USNO-B1
197.1	282.0607	61.8745	B2=16.5, I=15.5, R1=19.7	USNO-B1
198.0	282.0663	61.8742	B2=21.1, R1=18.7, R2=19.8	USNO-B1
198.6	282.1820	61.9163	B1=18.0, B2=17.7, I=16.0, R1=17.4, R2=16.7	USNO-B1
198.6	282.1820	61.9163	h=15.3, j=16.0, k=15.3	2MASS
199.4	281.9550	61.9139	B1=17.3, B2=20.2, R1=18.4	USNO-B1
199.6	281.9525	61.9401	B1=15.9, B2=15.4, I=13.7, R1=14.7, R2=14.7	USNO-B1
199.9	281.9524	61.9401	h=13.8, j=14.1, k=13.8	2MASS
199.9	282.1408	61.8855	B1=18.7, B2=18.7, I=17.8, R1=18.9, R2=18.6	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.