Swift Trigger: 882809;

Presumed name: GRB 190109B

BAT	03^h 42^m 22.80^s, +63° 34′ 40.8″
position:	(55.595, 63.578 ± 180″)
XRT	03^h 41^m 56.88^s, +63° 35′ 31.2″
position:	(55.4870, 63.5920 ± 2.1″)
UVOT	No position available.
Galactic N_HI:	3.12×10⁰ cm^-2
Galactic E(B-V):	0.932 mag

Best RA:	03^h 41^m 56.88^s	= 55.4870 d
Best Dec:	+63° 35′ 31.2″	= 63.5920 d

Gal Lat:	6.73
Gal Long:	140.59

Sun angle:	125.18°, -8.4 hr East of Sun

¹Sper #2 auto processing.

Galaxies within 3.33 of XRT position

	RA*	Dec*		Catalogue
9.3	55.4925	63.5925		NED
11.3	55.4800	63.5928		NED
19.3	55.4979	63.5900		NED
20.3	55.4767	63.5886		NED
20.9	55.4847	63.5863	B1=13.8, I=13.9, R1=12.6	USNO-B1
21.3	55.4871	63.5861	B1=15.9, R1=14.0	USNO-B1
21.6	55.4863	63.5860	B1=15.5, B2=15.7, R1=14.5, R2=14.7	USNO-B1
22.1	55.4863	63.5858		NED
23.3	55.4763	63.5964		NED
25.1	55.4925	63.5856		NED
25.1	55.4717	63.5903		NED
31.6	55.4942	63.5839		NED
32.9	55.4792	63.6006		NED
39.2	55.5113	63.5931		NED
39.4	55.5054	63.5850		NED
39.5	55.5116	63.5927	B1=16.6, R1=15.9	USNO-B1
41.4	55.5125	63.5908		NED
48.0	55.4571	63.5933		NED
48.4	55.4570	63.5935	I=17.4, R1=19.0, R2=18.6	USNO-B1
50.2	55.4642	63.6017		NED
50.4	55.4574	63.5968	I=18.9, R1=19.6, R2=19.1	USNO-B1
50.4	55.4858	63.5781		NED
51.4	55.4884	63.6063	B1=21.1, B2=20.3, I=18.3, R2=18.8	USNO-B1
54.2	55.4908	63.5769		NED
54.5	55.4650	63.5803		NED
54.5	55.4633	63.6028		NED
55.3	55.5079	63.6042		NED
58.0	55.5108	63.6042		NED
60.7	55.4533	63.5842		NED
62.8	55.5246	63.5969		NED
63.3	55.4525	63.6008		NED
64.9	55.4491	63.5984	B2=21.1, I=18.4, R1=19.2	USNO-B1
66.2	55.4663	63.5761		NED
66.9	55.4652	63.5762	I=17.5, R1=15.2	USNO-B1
67.3	55.4481	63.5991	B1=20.2, R1=20.4	USNO-B1
67.9	55.4479	63.5847		NED
68.6	55.4767	63.6106		NED
68.6	55.5296	63.5933		NED
68.9	55.4765	63.6106	B1=19.4, B2=18.3, I=16.7, R1=17.6, R2=17.5	USNO-B1
74.0	55.4821	63.5717		NED
76.3	55.4417	63.5853		NED
76.4	55.5188	63.5761		NED
77.1	55.4433	63.6008		NED
81.7	55.4383	63.5989		NED
82.7	55.4707	63.6138	I=18.7, R1=19.4, R2=19.9	USNO-B1
83.0	55.5217	63.6092		NED
86.0	55.5087	63.6139	B1=20.2, R1=16.9, R2=19.9	USNO-B1
86.0	55.4333	63.5908		NED
86.3	55.4425	63.5783		NED
86.7	55.5408	63.5949	I=18.1, R1=19.6, R2=20.3	USNO-B1
86.7	55.5408	63.5950		NED
87.4	55.5292	63.6075		NED
89.6	55.5429	63.5928		NED
89.6	55.4325	63.5975		NED
90.2	55.4322	63.5978	I=17.9, R1=19.1	USNO-B1
92.2	55.4975	63.6172		NED
93.3	55.5354	63.6064		NED
93.7	55.4392	63.5769		NED
94.7	55.5417	63.5819		NED
95.3	55.5463	63.5911		NED
95.8	55.5013	63.6178		NED
96.0	55.4271	63.5933		NED
97.3	55.5012	63.6183	B1=19.5, I=17.2	USNO-B1
97.7	55.5475	63.5944		NED
98.2	55.4917	63.5647		NED
98.9	55.5025	63.6186		NED
99.8	55.5151	63.5673	R1=19.4, R2=19.9	USNO-B1
100.2	55.5218	63.5689	B1=20.2, B2=19.9, I=17.9, R1=18.7, R2=18.8	USNO-B1
101.0	55.5046	63.5650		NED
102.8	55.5486	63.5840	B1=21.1, R1=19.3	USNO-B1
103.1	55.4983	63.6203		NED
106.1	55.4271	63.5794		NED
106.5	55.4742	63.5630	I=18.7, R1=19.6, R2=19.8	USNO-B1
107.2	55.4742	63.5628		NED
107.3	55.5108	63.5642		NED
108.3	55.4939	63.5621	I=18.6, R1=19.6, R2=19.9	USNO-B1
110.2	55.4258	63.5781		NED
110.7	55.4200	63.5994		NED
112.6	55.5479	63.6078		NED
113.5	55.5573	63.5880	B1=20.2, R1=19.4	USNO-B1
114.1	55.5058	63.5614		NED
114.4	55.4383	63.6153		NED
114.8	55.5282	63.6181	B1=16.8, B2=15.8, I=13.1, R1=14.1, R2=14.2	USNO-B1
114.8	55.5283	63.6181		NED
117.2	55.5196	63.6211		NED
121.1	55.5625	63.5894		NED
121.7	55.4117	63.5969		NED
121.8	55.5075	63.5594		NED
121.9	55.4117	63.5970	B1=18.3, B2=17.2, I=15.5, R1=16.1, R2=16.3	USNO-B1
122.3	55.4167	63.5789		NED
124.0	55.5560	63.5764	B1=20.2, R1=18.6	USNO-B1
124.1	55.4804	63.5578		NED
125.3	55.4204	63.5736		NED
125.5	55.4088	63.5911		NED
125.5	55.5567	63.5761		NED
125.6	55.4513	63.5608		NED
127.4	55.4502	63.5606	B1=20.2, R1=18.5	USNO-B1
129.7	55.4150	63.6086		NED
130.0	55.5175	63.6256		NED
130.0	55.4151	63.6088	I=18.1, R1=19.3, R2=19.5	USNO-B1
130.1	55.4238	63.6147		NED
131.2	55.4075	63.6008		NED
131.3	55.4750	63.5558		NED
132.2	55.5238	63.6250		NED
132.6	55.5682	63.5849	I=18.0, R1=18.9, R2=19.1	USNO-B1
133.1	55.5683	63.5847		NED
136.7	55.4463	63.5586		NED
136.9	55.5238	63.5578		NED
137.6	55.4083	63.6075		NED
138.2	55.4775	63.6303		NED
138.5	55.4281	63.6202	B1=20.0, B2=21.2, I=18.2, R2=19.6	USNO-B1
140.2	55.4008	63.5994		NED
140.2	55.4658	63.6297		NED
140.6	55.5454	63.6211		NED
141.1	55.4696	63.6306		NED
141.1	55.4171	63.5682	I=18.3, R1=19.2, R2=18.9	USNO-B1
141.5	55.4353	63.5601	R1=19.1, R2=19.7	USNO-B1
142.6	55.5254	63.5564		NED
143.9	55.3971	63.5947		NED
144.8	55.5138	63.6306		NED
145.1	55.5188	63.6297		NED
145.1	55.5742	63.6031		NED
145.3	55.5743	63.6030	I=18.0, R1=19.2, R2=19.8	USNO-B1
145.3	55.5189	63.6298	B1=20.2, B2=19.8, I=17.2, R1=17.9, R2=17.7	USNO-B1
146.5	55.3956	63.5940	B1=17.2, R1=18.6	USNO-B1
147.2	55.3971	63.6008		NED
148.0	55.4242	63.6222		NED
148.1	55.4000	63.6059	B1=20.1, I=18.2, R1=20.4	USNO-B1
148.9	55.3942	63.5931		NED
149.0	55.4088	63.5694		NED
150.5	55.5183	63.6314		NED
150.5	55.5792	63.6006		NED
150.7	55.5179	63.6315	B1=19.8, B2=19.0, I=17.5, R1=17.7, R2=18.1	USNO-B1
151.4	55.5742	63.5756		NED
151.9	55.5390	63.5567	B2=20.7, I=18.9, R1=19.2, R2=19.8	USNO-B1
152.2	55.5013	63.5503		NED
152.3	55.5108	63.6331		NED
152.4	55.4167	63.5635	B1=17.3, B2=16.7, I=14.8, R1=15.5, R2=15.8	USNO-B1
152.4	55.4167	63.5633		NED
153.4	55.4779	63.6344		NED
153.8	55.4781	63.6345	I=18.1, R1=19.0, R2=18.3	USNO-B1
153.9	55.3930	63.6009	B1=20.7, B2=20.7, I=18.9, R2=19.7	USNO-B1
154.2	55.4211	63.6232	B1=19.4, I=15.4	USNO-B1
154.5	55.4387	63.6292		NED
155.0	55.4208	63.6233		NED
155.1	55.3904	63.5953		NED
155.2	55.4281	63.5578	B1=20.2, B2=20.0, I=18.1, R1=18.8	USNO-B1
155.6	55.4463	63.5528		NED
155.9	55.4958	63.5489		NED
156.7	55.5046	63.6347		NED
157.9	55.4104	63.6197		NED
158.0	55.4913	63.5481		NED
159.8	55.5503	63.6263	B1=17.2, I=19.2	USNO-B1
159.9	55.5071	63.6356		NED
160.1	55.4171	63.6239		NED
161.0	55.4113	63.5628		NED
161.3	55.4867	63.5472		NED
163.0	55.5790	63.6114	B2=20.3, I=18.0, R1=19.1, R2=18.8	USNO-B1
163.8	55.4492	63.5497		NED
164.4	55.5712	63.6181	B2=19.9, I=17.7, R1=18.5, R2=18.6	USNO-B1
164.5	55.5067	63.6369	B1=20.0, R2=20.2	USNO-B1
165.2	55.4688	63.5468	I=18.2, R1=19.5, R2=19.3	USNO-B1
167.1	55.5785	63.5697	B1=20.2, I=18.5, R1=18.0	USNO-B1
167.2	55.5067	63.6376	B1=20.2, R2=19.9	USNO-B1
167.9	55.5858	63.5767		NED
167.9	55.4971	63.5456		NED
168.1	55.4775	63.6386		NED
168.5	55.5021	63.5456		NED
168.5	55.5050	63.6381		NED
169.4	55.4904	63.6389		NED
169.4	55.5758	63.6175		NED
169.4	55.5533	63.6286		NED
169.6	55.5250	63.6361		NED
170.2	55.5929	63.5878		NED
170.3	55.5692	63.5619		NED
170.6	55.3804	63.5919		NED
171.6	55.5203	63.5467	B1=19.3, B2=18.2, I=16.5, R1=17.4, R2=17.1	USNO-B1
171.6	55.5696	63.5617	I=18.3, R1=19.0, R2=20.0	USNO-B1
171.7	55.5204	63.5467		NED
173.6	55.3996	63.5636		NED
174.2	55.5100	63.6393	B2=20.2, I=17.9, R1=18.9, R2=19.0	USNO-B1
174.7	55.3892	63.5706		NED
174.8	55.3890	63.5706	B1=18.6, B2=18.3, I=16.9, R1=17.4, R2=17.1	USNO-B1
175.1	55.5962	63.5950		NED
175.3	55.5075	63.6397		NED
175.6	55.5109	63.5444	R1=19.8, R2=19.8	USNO-B1
176.8	55.5376	63.5484	B1=20.3, B2=19.7, I=17.4, R1=18.2, R2=18.3	USNO-B1
177.5	55.5375	63.5481		NED
178.2	55.5957	63.5814	B1=20.2, R1=19.4	USNO-B1
179.6	55.3749	63.5908	B1=20.5, B2=20.2, I=18.6, R1=19.0, R2=19.2	USNO-B1
182.6	55.5211	63.6404	I=18.3, R2=19.4	USNO-B1
182.9	55.4167	63.5519		NED
183.4	55.4162	63.5519		NED
184.4	55.5774	63.5603	B1=20.2, R1=19.3	USNO-B1
185.6	55.5692	63.5558		NED
187.1	55.5892	63.6172		NED
188.0	55.3729	63.5794		NED
188.7	55.4417	63.6406		NED
189.2	55.4721	63.6442		NED
189.2	55.5992	63.6083		NED
190.2	55.5983	63.6106		NED
190.3	55.5288	63.5425		NED
190.7	55.4850	63.6450		NED
191.2	55.4851	63.6451	I=18.5, R2=19.9	USNO-B1
191.5	55.4008	63.5550		NED
192.2	55.6063	63.5867		NED
192.8	55.4563	63.6439		NED
192.9	55.6025	63.5767		NED
193.7	55.6079	63.5944		NED
194.0	55.4846	63.5381		NED
195.2	55.6088	63.5931		NED
195.5	55.5000	63.5381		NED
195.9	55.4310	63.5436	I=18.5, R2=20.3	USNO-B1
197.0	55.5167	63.6450		NED
197.8	55.4313	63.6411		NED
198.2	55.5359	63.6426	B2=20.4, R2=19.5	USNO-B1
198.3	55.5983	63.5681		NED
198.7	55.4671	63.6464		NED
198.8	55.3688	63.5747		NED
199.4	55.6108	63.5975		NED

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