Swift Trigger: 887579;

Presumed name: GRB 190204A

BAT	23^h 26^m 08.16^s, +54° 52′ 58.8″
position:	(351.534, 54.883 ± 180″)
XRT	23^h 25^m 54.61^s, +54° 52′ 34.4″
position:	(351.47755, 54.87623 ± 3.6″)
UVOT	23^h 25^m 54.48^s, +54° 52′ 35.0″
position:	(351.4770, +54.8764 ± 1.1″)
Galactic N_HI:	2.95×10⁰ cm^-2
Galactic E(B-V):	0.394 mag

Best RA:	23^h 25^m 54.48^s	= 351.4770 d
Best Dec:	+54° 52′ 35.0″	= +54.8764 d

Gal Lat:	-5.96
Gal Long:	110.76

Sun angle:	76.96°, -2.3 hr East of Sun

¹Sper #2 auto processing.

Galaxies within 3.33 of XRT position

	RA*	Dec*		Catalogue
4.5	351.4754	54.8772		NED
13.0	351.4708	54.8758		NED
29.9	351.4913	54.8761		NED
33.8	351.4925	54.8794		NED
35.9	351.4746	54.8864		NED
38.4	351.4696	54.8861		NED
38.9	351.4758	54.8872		NED
39.1	351.4804	54.8869		NED
39.6	351.4600	54.8817		NED
39.7	351.4704	54.8865	I=14.9, R2=15.3	USNO-B1
39.8	351.4900	54.8683		NED
40.0	351.4917	54.8692		NED
41.7	351.4967	54.8742		NED
45.6	351.4983	54.8792		NED
46.0	351.4613	54.8853		NED
46.9	351.4723	54.8889	I=9.6, R2=11.7	USNO-B1
47.9	351.4717	54.8894		NED
48.5	351.4614	54.8665	B2=20.7, I=17.4, R1=19.1, R2=18.3	USNO-B1
48.9	351.4613	54.8664		NED
49.1	351.5004	54.8772		NED
51.0	351.4771	54.8622		NED
58.8	351.4942	54.8894		NED
59.5	351.4900	54.8617		NED
59.6	351.4911	54.8908	B2=20.1, I=17.6, R2=18.9	USNO-B1
60.1	351.5065	54.8767	I=18.1, R2=19.4	USNO-B1
60.8	351.4721	54.8597		NED
60.9	351.4563	54.8644		NED
61.2	351.4525	54.8858		NED
61.4	351.5032	54.8848	B2=16.4, I=15.7, R2=15.7	USNO-B1
61.6	351.4810	54.8932	B2=20.6, I=18.0, R2=18.5	USNO-B1
61.9	351.5033	54.8844		NED
62.0	351.4775	54.8592		NED
62.0	351.4945	54.8905	B2=19.8, I=14.1, R2=14.8	USNO-B1
63.1	351.5008	54.8872		NED
63.2	351.4956	54.8904	B2=16.7, R2=16.4	USNO-B1
63.4	351.4504	54.8850		NED
64.0	351.4654	54.8931		NED
64.1	351.4959	54.8906	B1=18.2, B2=17.9, I=16.3, R1=16.8, R2=16.5	USNO-B1
64.6	351.5054	54.8839		NED
64.6	351.4963	54.8906		NED
64.9	351.4583	54.8619		NED
65.4	351.4461	54.8779	B2=20.7, R2=19.5	USNO-B1
65.7	351.4877	54.8589	B2=20.7, R2=19.6	USNO-B1
67.3	351.4504	54.8656		NED
68.9	351.4446	54.8722		NED
69.7	351.4808	54.8956		NED
70.3	351.4755	54.8567	B2=20.3, I=18.0, R1=19.2, R2=18.9	USNO-B1
70.7	351.4538	54.8619		NED
70.9	351.5050	54.8878		NED
73.0	351.4458	54.8667		NED
73.0	351.5121	54.8769		NED
73.9	351.4712	54.8967		NED
74.1	351.4608	54.8947		NED
74.1	351.4419	54.8747	B2=20.6, R1=18.9, R2=19.6	USNO-B1
74.3	351.4441	54.8688	B2=20.5, I=17.9, R1=19.1, R2=18.7	USNO-B1
74.5	351.4408	54.8764		NED
74.7	351.4904	54.8956		NED
76.5	351.5075	54.8883		NED
76.9	351.5121	54.8831		NED
77.2	351.4854	54.8972		NED
77.8	351.4858	54.8556		NED
79.3	351.5150	54.8794		NED
80.2	351.4400	54.8694		NED
83.2	351.4872	54.8538	B1=17.2, B2=17.1, I=15.3, R1=15.8, R2=15.9	USNO-B1
83.2	351.5071	54.8917		NED
83.4	351.4926	54.8977	B1=17.0, B2=16.7, I=15.2, R1=14.8, R2=15.3	USNO-B1
83.6	351.4925	54.8978		NED
83.8	351.4725	54.8533		NED
84.5	351.4571	54.8969		NED
84.7	351.4496	54.8589		NED
85.0	351.4871	54.8536		NED
85.3	351.5133	54.8875		NED
85.5	351.5181	54.8808	B2=20.6, R2=19.6	USNO-B1
85.6	351.4438	54.8622		NED
86.7	351.5151	54.8656	B1=20.2, B2=20.5, I=18.0, R1=19.1, R2=18.8	USNO-B1
87.3	351.4696	54.9003		NED
88.1	351.4971	54.8978		NED
89.6	351.4346	54.8817		NED
90.5	351.4775	54.9017		NED
91.9	351.4336	54.8796	B2=20.9, R2=19.6	USNO-B1
92.3	351.5138	54.8912	B2=20.6, R2=19.0	USNO-B1
93.6	351.5163	54.8892		NED
93.6	351.5017	54.8982	B2=20.3, I=18.1, R1=19.0, R2=18.5	USNO-B1
93.7	351.4517	54.8976	B2=20.7, R2=19.3	USNO-B1
94.6	351.4358	54.8653		NED
95.4	351.4390	54.8908	B1=19.9, B2=20.4, R1=19.0, R2=19.2	USNO-B1
95.9	351.5150	54.8611		NED
95.9	351.5170	54.8902	B2=20.1, R2=18.5	USNO-B1
97.9	351.4746	54.8492		NED
98.2	351.4529	54.8529	B2=20.7, R2=19.2	USNO-B1
98.4	351.5079	54.8552	B2=18.9, R2=18.5	USNO-B1
99.4	351.5238	54.8706		NED
99.4	351.5177	54.8913	B2=16.9, I=17.1, R2=18.7	USNO-B1
99.7	351.4858	54.9036		NED
100.1	351.5017	54.8525		NED
100.4	351.5254	54.8744		NED
101.8	351.4304	54.8675		NED
104.5	351.4981	54.8497	B1=19.7, B2=20.1, I=18.0, R1=19.1, R2=18.6	USNO-B1
105.0	351.5275	54.8767		NED
106.3	351.5129	54.8553		NED
107.3	351.4833	54.9058		NED
108.1	351.5279	54.8831		NED
108.8	351.5269	54.8658	I=18.1, R2=19.9	USNO-B1
109.4	351.4727	54.9065	B2=20.5, I=17.9, R1=19.0, R2=18.6	USNO-B1
110.4	351.4242	54.8714		NED
111.5	351.4250	54.8678		NED
112.1	351.5308	54.8794		NED
112.3	351.5014	54.8482	B2=20.5, R1=19.2, R2=19.2	USNO-B1
112.3	351.4966	54.8470	B1=20.1, B2=20.3, R2=19.2	USNO-B1
113.0	351.4238	54.8839		NED
113.2	351.5108	54.9011		NED
113.6	351.5174	54.8979	B2=20.7, R2=19.2	USNO-B1
113.9	351.4496	54.8492		NED
114.4	351.4492	54.8490	B1=16.9, B2=16.8, I=15.0, R1=15.3, R2=15.9	USNO-B1
114.4	351.4221	54.8719		NED
116.5	351.4348	54.8552	I=18.4, R2=19.4	USNO-B1
116.7	351.4308	54.8953		NED
117.6	351.4262	54.8619		NED
117.6	351.5221	54.8567		NED
118.8	351.4313	54.8567		NED
119.0	351.4529	54.8464		NED
119.1	351.4218	54.8843	B2=19.0, R1=17.5	USNO-B1
119.4	351.4208	54.8842		NED
119.7	351.4475	54.8478		NED
121.6	351.5318	54.8633	B2=20.1, R2=19.4	USNO-B1
121.7	351.5158	54.9017		NED
122.5	351.5263	54.8953		NED
122.7	351.5329	54.8653		NED
123.5	351.4959	54.8436	B2=20.8, R2=19.4	USNO-B1
123.5	351.4463	54.9058		NED
124.8	351.4254	54.8583		NED
126.2	351.4162	54.8806		NED
126.3	351.4443	54.8468	B2=15.8, I=15.2, R2=15.9	USNO-B1
126.5	351.4608	54.9103		NED
128.6	351.4625	54.9111		NED
128.7	351.4158	54.8703		NED
129.1	351.4162	54.8681		NED
129.8	351.4149	54.8751	B1=20.1, B2=20.6, R1=18.9, R2=19.2	USNO-B1
129.8	351.5071	54.9081		NED
130.7	351.5283	54.8553		NED
130.7	351.4146	54.8819		NED
131.8	351.4517	54.9100		NED
132.0	351.4146	54.8820	B2=20.5, I=17.7, R1=18.8, R2=18.6	USNO-B1
132.4	351.5408	54.8744		NED
132.8	351.4671	54.9126	I=18.4, R2=19.9	USNO-B1
133.5	351.4692	54.8395	B2=20.4, R1=19.2, R2=19.6	USNO-B1
133.6	351.4125	54.8747		NED
133.6	351.5392	54.8669		NED
133.7	351.5404	54.8694		NED
135.4	351.5088	54.8436		NED
135.8	351.5346	54.8583		NED
136.5	351.4583	54.9128		NED
136.7	351.4770	54.9142	I=17.1, R2=17.3	USNO-B1
136.7	351.4969	54.9125	B1=19.5, B2=19.9, I=17.9, R1=18.9, R2=18.8	USNO-B1
136.9	351.4775	54.9143	I=17.2, R2=17.1	USNO-B1
137.9	351.4817	54.9147		NED
138.0	351.4108	54.8819		NED
138.7	351.4563	54.9131		NED
139.1	351.4100	54.8744		NED
139.4	351.4599	54.9136	B2=19.6, I=17.7, R2=17.7	USNO-B1
139.4	351.4244	54.9000	B2=20.5, R1=18.3, R2=19.3	USNO-B1
139.6	351.4267	54.9022		NED
139.6	351.4820	54.9149	B2=18.6, I=16.8, R2=18.8	USNO-B1
139.9	351.4244	54.8522	B2=20.7, R2=19.6	USNO-B1
140.0	351.5117	54.9097		NED
140.2	351.5325	54.8989		NED
140.2	351.4771	54.9153		NED
141.5	351.4459	54.9110	B2=19.7, I=17.5, R1=18.4, R2=18.3	USNO-B1
142.4	351.4517	54.8397		NED
142.4	351.5171	54.9086		NED
143.1	351.4606	54.9148	B2=18.8, R2=17.0	USNO-B1
143.5	351.5304	54.8511		NED
143.6	351.4492	54.8400		NED
143.9	351.5458	54.8717		NED
143.9	351.4408	54.8422		NED
144.1	351.5078	54.8402	B1=19.8, B2=20.6, I=17.8, R1=19.0, R2=19.4	USNO-B1
144.8	351.4212	54.9008		NED
144.9	351.4079	54.8831		NED
144.9	351.4522	54.8387	I=13.2, R1=13.2, R2=14.6	USNO-B1
145.6	351.4695	54.8360	B2=19.9, I=18.0, R1=19.1, R2=18.9	USNO-B1
145.7	351.4613	54.9158		NED
146.1	351.4601	54.8369	B2=20.2, R1=18.8	USNO-B1
146.2	351.4521	54.8383		NED
146.6	351.4621	54.8367		NED
146.6	351.4817	54.8358		NED
147.0	351.5309	54.9031	B1=20.1, B2=20.6, I=18.1, R1=19.1, R2=18.8	USNO-B1
147.1	351.5002	54.9150	I=16.7, R2=19.9	USNO-B1
147.3	351.5141	54.9113	B2=20.5, R1=19.1, R2=19.2	USNO-B1
147.7	351.4819	54.8353	B2=20.1, I=17.9, R2=18.9	USNO-B1
148.3	351.4371	54.9106		NED
148.8	351.4301	54.9073	B2=18.4, I=18.5	USNO-B1
149.6	351.5104	54.8392	B2=20.7, I=18.1, R1=19.0, R2=19.0	USNO-B1
149.6	351.4296	54.9078		NED
150.1	351.5004	54.9158		NED
150.9	351.5472	54.8639	B1=19.9, B2=19.7, I=17.7, R1=18.6, R2=18.3	USNO-B1
151.0	351.5471	54.8875		NED
151.1	351.5254	54.8450		NED
151.5	351.5011	54.9161	I=16.7, R2=17.0	USNO-B1
152.2	351.5362	54.9014		NED
152.9	351.4363	54.9119		NED
153.1	351.5492	54.8678		NED
153.5	351.4029	54.8786		NED
154.9	351.4433	54.8381		NED
155.0	351.5121	54.9144		NED
155.9	351.5292	54.8453		NED
156.7	351.5471	54.8934	B2=18.3, I=18.1	USNO-B1
157.6	351.5475	54.8931		NED
157.6	351.5488	54.8622		NED
158.0	351.5521	54.8839		NED
158.3	351.4011	54.8766	B2=21.0, I=18.1, R1=19.0, R2=18.9	USNO-B1
158.3	351.4954	54.8336		NED
160.6	351.5396	54.8503		NED
160.9	351.5175	54.9144		NED
161.2	351.5246	54.9117		NED
161.2	351.5248	54.9118	B2=20.6, I=17.2, R1=19.0, R2=18.8	USNO-B1
161.6	351.4800	54.8317		NED
162.6	351.4317	54.8397		NED
163.6	351.5321	54.9089		NED
164.6	351.4350	54.8375		NED
164.6	351.5242	54.9133		NED
164.8	351.5433	54.8511		NED
164.8	351.5092	54.8344		NED
166.0	351.5577	54.8747	B2=21.1, I=17.9, R2=19.2	USNO-B1
166.9	351.5321	54.9103		NED
166.9	351.5385	54.8459	B1=14.3, B2=14.2, I=12.0, R1=12.9, R2=13.0	USNO-B1
167.3	351.5387	54.8467		NED
167.7	351.4633	54.9222		NED
167.7	351.4433	54.8340	B2=20.7, I=18.5, R1=15.0	USNO-B1
167.8	351.5304	54.8414		NED
167.9	351.4829	54.8300		NED
167.9	351.5508	54.8575		NED
168.7	351.4538	54.9214		NED
169.0	351.5375	54.8450		NED
169.8	351.5500	54.8542	B2=20.4, R2=18.9	USNO-B1
170.6	351.4854	54.9236		NED
170.7	351.4087	54.8497		NED
170.9	351.4900	54.9233		NED
171.0	351.4475	54.9208		NED
171.1	351.5517	54.8561		NED
171.2	351.5204	54.8356	B2=20.6, R1=18.9, R2=19.2	USNO-B1
171.4	351.3983	54.8614		NED
171.8	351.3986	54.8615	I=18.0, R2=19.5	USNO-B1
171.9	351.5562	54.8628		NED
172.0	351.5600	54.8786		NED
172.4	351.5508	54.8986		NED
172.5	351.4054	54.9008		NED
172.5	351.3956	54.8676	B1=20.1, B2=20.7, R2=19.5	USNO-B1
172.6	351.4967	54.8297		NED
173.4	351.4316	54.8360	B1=18.6, B2=18.2, I=17.6, R1=18.0, R2=17.7	USNO-B1
173.8	351.5427	54.8458	B1=16.9, B2=16.9, I=15.5, R1=15.2, R2=16.1	USNO-B1
174.2	351.4158	54.9094		NED
174.3	351.3929	54.8742		NED
174.4	351.3996	54.8956		NED
174.4	351.5562	54.8925		NED
174.8	351.5483	54.9025		NED
174.9	351.4863	54.9247		NED
175.1	351.4052	54.9014	B1=18.9, B2=18.2, I=16.3, R1=17.5, R2=16.7	USNO-B1
175.1	351.5425	54.8458		NED
175.7	351.5392	54.9094		NED
175.9	351.5601	54.8878	B2=20.3, R1=18.9, R2=19.2	USNO-B1
176.5	351.4529	54.9233		NED
176.9	351.4046	54.9022		NED
177.0	351.5554	54.8961		NED
178.0	351.5004	54.8289		NED
178.7	351.5592	54.8614		NED
179.4	351.5231	54.9186	B2=20.7, R2=19.4	USNO-B1
179.9	351.5625	54.8681		NED
180.1	351.3908	54.8794	B2=20.6, R2=19.5	USNO-B1
180.4	351.4813	54.9264		NED
180.6	351.4863	54.8264		NED
180.7	351.5595	54.8590	B2=20.6, R2=19.7	USNO-B1
180.9	351.5246	54.8344		NED
181.4	351.4807	54.8259	B2=19.5, I=17.8, R1=18.8, R2=18.4	USNO-B1
181.7	351.3896	54.8708		NED
183.2	351.3908	54.8881		NED
183.5	351.4350	54.8317		NED
183.8	351.5388	54.8393	B2=19.9, I=17.6, R1=18.5	USNO-B1
184.0	351.5650	54.8697		NED
184.3	351.5133	54.8297		NED
184.3	351.3958	54.8553		NED
184.4	351.5621	54.8914		NED
184.6	351.4275	54.8336		NED
184.8	351.4667	54.9275		NED
185.2	351.5592	54.8561		NED
185.3	351.5625	54.8925	B2=17.5, R2=16.8	USNO-B1
186.1	351.4608	54.9272		NED
186.1	351.5408	54.9128		NED
187.1	351.4413	54.8286		NED
187.6	351.5650	54.8627	B2=21.2, I=17.9, R2=19.1	USNO-B1
188.0	351.4446	54.9253		NED
189.2	351.3868	54.8701	B1=20.0, B2=20.1, I=18.1, R1=18.6, R2=18.6	USNO-B1
189.8	351.4208	54.8348	I=17.2, R2=17.8	USNO-B1
190.1	351.3863	54.8678		NED
190.3	351.3988	54.8489		NED
190.3	351.5129	54.8278		NED
190.3	351.4401	54.8280	I=13.7, R1=18.1	USNO-B1
190.7	351.4101	54.9123	I=18.1, R2=19.6	USNO-B1
191.8	351.4371	54.9244		NED
191.9	351.4475	54.8258		NED
192.1	351.5696	54.8728		NED
192.2	351.4417	54.9258		NED
192.6	351.4046	54.8428		NED
193.0	351.5054	54.8253		NED
193.1	351.4229	54.8325		NED
193.3	351.4738	54.8228		NED
193.7	351.3888	54.8944		NED
193.9	351.3918	54.8979	B2=20.6, R2=19.2	USNO-B1
194.0	351.4663	54.9300		NED
194.8	351.5322	54.9203	B2=20.7, I=17.8, R2=18.6	USNO-B1
195.4	351.4384	54.8269	B2=20.4, I=18.0, R1=18.1, R2=18.9	USNO-B1
195.7	351.5713	54.8769		NED
195.7	351.5500	54.9108		NED
195.9	351.4779	54.9308		NED
196.0	351.4150	54.8353		NED
196.1	351.3825	54.8794		NED
196.2	351.3829	54.8839		NED
196.2	351.4809	54.8218	B2=20.4, I=17.4, R1=18.8, R2=18.7	USNO-B1
197.1	351.4217	54.9208		NED
197.3	351.4808	54.8217		NED
197.3	351.5713	54.8694		NED
197.5	351.4525	54.9294		NED
199.3	351.5579	54.9061		NED
199.3	351.4777	54.9316	B2=20.9, R2=18.6	USNO-B1
199.6	351.5067	54.8236		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