Swift Trigger: 433160;

Presumed name: GRB 100902A

BAT	03^h 14^m 35.02^s, +30° 58′ 21.0″
position:	(48.6459, 30.9725 ± 180″)
XRT	03^h 14^m 30.98^s, +30° 58′ 43.7″
position:	(48.6291, 30.9788 ± 2.1″)
UVOT	No position available.
Galactic N_HI:	0.00×10⁰ cm^-2
Galactic E(B-V):	0.313 mag

Best RA:	03^h 14^m 30.98^s	= 48.6291 d
Best Dec:	+30° 58′ 43.7″	= 30.9788 d

Gal Lat:
Gal Long:

Sun angle:	not found

Stars within 3.33 of XRT position

	RA*	Dec*		Catalogue
28.6	48.6240	30.9722	B2=21.5, I=18.9, R1=18.9	USNO-B1
29.8	48.6338	30.9716	B1=19.1, B2=18.3, I=16.9, R1=17.6, R2=17.5	USNO-B1
31.0	48.6218	30.9729	B1=19.2, B2=16.7, I=17.1, R1=16.8, R2=16.0	USNO-B1
33.2	48.6204	30.9734	B1=19.1, B2=16.6, I=14.8, R1=16.3, R2=14.7	USNO-B1
33.3	48.6204	30.9733	h=15.2, j=16.0, k=14.9	2MASS
33.9	48.6200	30.9735	B1=19.0, B2=16.7, R1=16.3	USNO-B1
38.4	48.6181	30.9739	B1=20.8, B2=18.4	USNO-B1
42.6	48.6238	30.9679	h=14.4, j=14.8, k=14.3	2MASS
42.7	48.6236	30.9679	B1=17.9, B2=17.0, I=15.4, R1=16.2, R2=16.0	USNO-B1
44.3	48.6422	30.9738	B1=19.9, B2=18.6, I=15.3, R1=16.7, R2=16.9	USNO-B1
44.6	48.6423	30.9737	h=13.3, j=13.9, k=13.0	2MASS
44.8	48.6181	30.9869	h=15.6, j=16.2, k=15.6	2MASS
51.7	48.6139	30.9848	B2=21.5, I=18.9, R1=19.8, R2=19.4	USNO-B1
53.2	48.6228	30.9925	I=18.8, R1=19.8, R2=19.9	USNO-B1
54.7	48.6334	30.9640	I=18.7, R1=19.9, R2=19.8	USNO-B1
56.5	48.6130	30.9863	h=15.9, j=16.5, k=15.7	2MASS
57.8	48.6288	30.9948	h=14.4, j=14.8, k=14.4	2MASS
58.0	48.6288	30.9949	B1=17.4, B2=16.6, I=15.6, R1=15.8, R2=16.0	USNO-B1
61.2	48.6134	30.9891	h=13.9, j=14.3, k=13.8	2MASS
61.4	48.6133	30.9892	B1=17.3, B2=16.6, I=15.2, R1=15.8, R2=15.7	USNO-B1
63.1	48.6438	30.9910	h=15.0, j=15.5, k=14.6	2MASS
63.4	48.6439	30.9911	B2=21.4, I=17.4, R1=18.9, R2=19.1	USNO-B1
70.5	48.6519	30.9780	B2=16.3, I=19.2, R1=19.9	USNO-B1
70.9	48.6477	30.9904	B2=20.9, I=19.0, R1=19.9, R2=19.6	USNO-B1
72.0	48.6522	30.9762	h=12.1, j=12.4, k=12.0	2MASS
72.0	48.6523	30.9764	B1=15.1, B2=14.3, I=13.4, R1=13.8, R2=13.6	USNO-B1
73.1	48.6186	30.9970	h=15.7, j=16.6, k=15.6	2MASS
73.2	48.6185	30.9970	B2=20.9, I=17.9, R1=18.8, R2=18.7	USNO-B1
73.9	48.6530	30.9785	B1=17.7, B2=17.0, I=16.2, R1=16.5, R2=16.0	USNO-B1
74.2	48.6086	30.9896	h=12.7, j=13.3, k=12.5	2MASS
74.2	48.6531	30.9787	h=15.5, j=15.8, k=15.4	2MASS
74.4	48.6086	30.9897	B1=17.1, B2=16.0, I=14.5, R1=15.0, R2=14.9	USNO-B1
74.6	48.6144	30.9624	B1=17.1, B2=16.2, I=14.9, R1=15.2, R2=15.4	USNO-B1
74.7	48.6144	30.9623	h=13.5, j=14.0, k=13.4	2MASS
86.4	48.6041	30.9680	B1=15.5, B2=14.6, I=13.2, R1=13.7, R2=13.7	USNO-B1
86.6	48.6041	30.9679	h=11.7, j=12.1, k=11.6	2MASS
102.1	48.6167	30.9525	B1=17.2, B2=16.4, I=14.9, R1=15.4, R2=15.6	USNO-B1
102.2	48.6167	30.9525	h=13.7, j=14.0, k=13.6	2MASS
102.3	48.6592	30.9907	B1=19.3, B2=18.5, I=16.7, R1=17.2, R2=17.4	USNO-B1
102.3	48.6593	30.9906	h=15.0, j=15.6, k=14.7	2MASS
103.0	48.6382	31.0063	I=19.0, R1=20.1	USNO-B1
103.0	48.6085	30.9563	B1=20.6, B2=20.0, R2=17.6	USNO-B1
103.2	48.6085	30.9562	h=14.2, j=14.8, k=13.9	2MASS
106.4	48.6059	31.0006	B2=21.1, R1=19.9, R2=19.0	USNO-B1
107.7	48.6570	30.9609	I=18.0, R1=19.3, R2=19.0	USNO-B1
108.1	48.6572	30.9608	h=15.8, j=16.3, k=15.5	2MASS
108.9	48.6638	30.9736	I=18.6, R1=20.0, R2=20.1	USNO-B1
109.2	48.6639	30.9735	h=15.9, j=16.8, k=15.8	2MASS
109.4	48.6475	30.9528	B1=19.8, B2=18.1, I=16.2, R1=17.4, R2=16.8	USNO-B1
109.5	48.6474	30.9527	h=15.4, j=15.8, k=14.7	2MASS
110.7	48.6430	30.9505	B1=20.7, B2=20.6, R2=20.0	USNO-B1
112.6	48.6122	31.0065	R1=19.9, R2=20.5	USNO-B1
115.2	48.6312	31.0107	h=15.3, j=15.9, k=14.9	2MASS
115.4	48.6311	31.0108	B2=21.3, I=17.4, R1=19.0, R2=18.8	USNO-B1
116.8	48.6445	31.0084	B2=21.1, I=18.6, R1=19.5, R2=19.9	USNO-B1
122.8	48.5948	30.9616	I=19.1, R1=20.0, R2=20.1	USNO-B1
122.9	48.6618	30.9983	h=12.5, j=12.7, k=12.4	2MASS
122.9	48.6617	30.9984	B1=15.0, B2=14.2, I=13.6, R1=13.8, R2=13.7	USNO-B1
128.7	48.6586	30.9536	B1=20.8, B2=21.2, I=19.0, R1=19.7, R2=19.8	USNO-B1
131.8	48.6694	30.9668	B1=19.1, B2=18.4, I=17.5, R1=17.8, R2=17.5	USNO-B1
132.4	48.6695	30.9666	h=16.3, j=16.7, k=16.2	2MASS
134.4	48.6469	31.0129	h=14.2, j=14.9, k=14.0	2MASS
134.5	48.6469	31.0129	B1=20.5, B2=19.7, I=16.2, R1=17.7, R2=17.5	USNO-B1
139.9	48.6016	31.0097	h=15.4, j=16.1, k=15.7	2MASS
140.2	48.6016	31.0098	B1=18.9, B2=18.3, I=16.9, R1=17.4, R2=17.2	USNO-B1
140.9	48.6090	30.9437	B2=21.3, R1=19.9, R2=20.6	USNO-B1
141.2	48.6233	30.9399	B1=20.9, B2=20.9, I=18.9, R1=19.6, R2=19.7	USNO-B1
143.2	48.6698	30.9596	B1=19.6, B2=19.0, I=17.4, R1=17.9, R2=17.6	USNO-B1
143.6	48.6698	30.9595	h=16.1, j=16.6, k=15.8	2MASS
145.4	48.6446	31.0170	h=14.5, j=15.0, k=14.4	2MASS
145.4	48.6184	30.9394	B1=18.9, B2=17.8, I=16.7, R1=16.7, R2=16.9	USNO-B1
145.6	48.6185	30.9394	h=15.3, j=15.7, k=15.1	2MASS
145.6	48.6445	31.0170	B1=18.5, B2=17.8, I=15.9, R1=16.6, R2=16.5	USNO-B1
152.6	48.6373	30.9370	B1=20.4, B2=20.1, I=16.9, R1=18.0, R2=18.0	USNO-B1
152.7	48.6373	30.9370	h=14.8, j=15.5, k=14.6	2MASS
154.0	48.5984	31.0125	h=15.3, j=15.6, k=15.0	2MASS
154.4	48.5984	31.0127	B1=18.5, B2=17.6, I=16.5, R1=17.0, R2=16.8	USNO-B1
155.5	48.6707	30.9545	B1=20.8, B2=20.4, I=18.4, R1=19.7, R2=19.5	USNO-B1
161.0	48.5824	30.9590	B1=20.2, B2=20.1, I=18.0, R1=18.6, R2=18.7	USNO-B1
161.1	48.5824	30.9589	h=16.4, j=16.7, k=15.5	2MASS
162.8	48.6008	31.0170	B1=20.5, I=18.9, R2=20.6	USNO-B1
163.2	48.6818	30.9749	B1=18.3, B2=17.4, I=16.4, R1=16.6, R2=16.7	USNO-B1
163.5	48.6818	30.9748	h=15.2, j=15.5, k=15.0	2MASS
165.8	48.5774	30.9663	B1=19.5, B2=18.2, I=17.1, R1=17.5, R2=17.5	USNO-B1
166.0	48.5773	30.9662	h=15.9, j=16.4, k=15.7	2MASS
166.6	48.5926	31.0129	h=16.1, j=16.9, k=15.3	2MASS
167.6	48.6776	30.9579	B2=21.4, R1=20.0, R2=19.8	USNO-B1
169.7	48.5807	31.0011	h=13.0, j=13.7, k=12.8	2MASS
169.9	48.5806	31.0012	B1=18.4, B2=17.3, I=14.9, R1=15.8, R2=15.9	USNO-B1
170.1	48.6430	30.9331	B1=20.6, B2=19.6, I=16.9, R1=17.9, R2=17.7	USNO-B1
170.4	48.6430	30.9330	h=15.0, j=15.6, k=14.7	2MASS
173.0	48.6668	31.0143	h=15.4, j=15.6, k=15.2	2MASS
173.3	48.6668	31.0144	B1=19.3, B2=18.1, I=16.7, R1=17.4, R2=17.0	USNO-B1
175.1	48.6133	30.9321	B2=20.8, I=18.3, R1=19.2, R2=19.2	USNO-B1
175.7	48.6517	30.9340	I=18.8, R2=20.9	USNO-B1
175.8	48.6403	30.9309	B2=21.4, I=17.6, R1=19.5, R2=19.3	USNO-B1
175.8	48.6549	31.0223	h=15.0, j=15.5, k=15.0	2MASS
175.9	48.6403	30.9309	h=15.4, j=15.8, k=14.8	2MASS
176.0	48.6549	31.0224	B1=18.2, B2=17.5, I=16.2, R1=16.7, R2=16.6	USNO-B1
176.0	48.6517	30.9339	h=16.4, j=16.7, k=15.7	2MASS
176.7	48.6455	31.0258	I=19.1, R1=19.8, R2=20.2	USNO-B1
182.0	48.6779	31.0072	B2=21.6, I=19.0, R1=19.6, R2=19.8	USNO-B1
182.1	48.6610	31.0214	B2=20.6, I=18.8, R1=19.7, R2=19.9	USNO-B1
184.9	48.6158	30.9287	B1=16.7, B2=15.8, I=14.7, R1=15.1, R2=15.1	USNO-B1
185.0	48.6158	30.9287	h=13.4, j=13.7, k=13.3	2MASS
187.6	48.6653	31.0207	B1=20.4, B2=20.6, I=18.9, R1=19.6, R2=19.5	USNO-B1
188.0	48.6900	30.9784	I=18.6, R1=19.1, R2=19.5	USNO-B1
188.4	48.5700	30.9656	B1=19.3, B2=18.6, I=17.4, R1=18.2, R2=17.9	USNO-B1
188.5	48.5700	30.9656	h=16.2, j=17.0, k=15.6	2MASS
189.0	48.6903	30.9778	h=16.2, j=16.9, k=15.7	2MASS
189.4	48.5960	30.9345	B1=15.2, B2=14.2, I=12.6, R1=13.3, R2=13.1	USNO-B1
189.6	48.5960	30.9344	h=10.7, j=11.2, k=10.6	2MASS
190.0	48.6887	30.9919	B1=20.7, B2=20.8, I=18.6, R1=19.5, R2=19.7	USNO-B1
190.0	48.6135	31.0299	h=15.5, j=16.2, k=15.3	2MASS
190.1	48.6135	31.0299	B2=21.8, I=18.0, R2=19.9	USNO-B1
190.2	48.5728	31.0003	B1=20.1, B2=19.5, I=18.6, R1=19.2, R2=18.7	USNO-B1
191.5	48.6623	31.0238	B2=21.2, R1=19.4, R2=20.1	USNO-B1
191.6	48.6758	31.0139	h=11.2, j=11.8, k=10.9	2MASS
191.7	48.6757	31.0140	B1=17.4, B2=16.6, I=13.4, R1=15.0, R2=14.9	USNO-B1
192.2	48.5690	30.9927	h=13.3, j=13.7, k=13.2	2MASS
192.4	48.5690	30.9929	B1=16.8, B2=15.9, I=14.8, R1=15.3, R2=15.1	USNO-B1
192.7	48.5896	30.9373	I=18.5, R1=20.1, R2=19.8	USNO-B1
194.4	48.6627	31.0245	B1=20.9, I=19.1	USNO-B1
194.5	48.6178	31.0320	h=16.2, j=16.2, k=15.8	2MASS
194.7	48.6799	31.0109	h=14.6, j=15.0, k=14.4	2MASS
194.8	48.6799	31.0109	B1=18.1, B2=17.4, I=15.9, R1=16.2, R2=16.3	USNO-B1
194.8	48.6177	31.0320	B1=18.7, B2=17.9, I=17.2, R1=17.3, R2=17.2	USNO-B1
195.8	48.6837	31.0065	B1=20.4, B2=20.1, I=18.0, R1=18.6, R2=18.7	USNO-B1
196.8	48.6927	30.9745	B2=21.5, I=17.1, R1=19.9, R2=19.1	USNO-B1
197.2	48.6928	30.9744	h=14.8, j=15.4, k=14.4	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.