Swift Trigger: 1194500;

Presumed name: GRB 231104A

BAT	01^h 35^m 09.36^s, +83° 47′ 27.6″
position:	(23.789, +83.791 ± 180″)
XRT	01^h 35^m 13.94^s, +83° 47′ 33.0″
position:	(23.8081, +83.7925 ± 3.5″)
UVOT	No position available.
Galactic N_HI:	8.52×10²⁰ cm^-2
Galactic E(B-V):	0.161 mag

Best RA:	01^h 35^m 13.94^s	= 23.8081 d
Best Dec:	+83° 47′ 33.0″	= +83.7925 d

Gal Lat:	21.03
Gal Long:	124.19

Sun angle:	111.13°, -11.0 hr East of Sun

Galaxies within 200 of XRT position

	RA*	Dec*		Catalogue
18.5	23.8556	83.7922	B1=20.4, I=18.2	USNO-B1
20.0	23.7684	83.7960	B1=21.6, R1=19.6	USNO-B1
20.2	23.7675	83.7889		NED
21.6	23.8163	83.7867		NED
21.9	23.8483	83.7883	B=21.6, R=18.8	APM-N
22.4	23.8442	83.7878		NED
22.6	23.8488	83.7881		NED
28.7	23.7412	83.7958		NED
28.7	23.7383	83.7897		NED
29.0	23.7538	83.7869		NED
34.5	23.7196	83.7919		NED
38.8	23.7275	83.7861		NED
40.2	23.9080	83.7897	B=21.4, R=20.0	APM-N
40.2	23.7475	83.7833		NED
40.3	23.9083	83.7897		NED
44.8	23.8100	83.7800		NED
48.7	23.7296	83.8031		NED
50.0	23.7767	83.7792		NED
50.6	23.7792	83.8061		NED
55.9	23.9412	83.7867	B=21.6, R=16.6	APM-N
58.0	23.8354	83.8083		NED
58.3	23.9396	83.8003		NED
59.4	23.7571	83.7770	B1=20.8, B2=20.5	USNO-B1
60.7	23.6529	83.7942		NED
62.2	23.7546	83.7761		NED
64.9	23.7154	83.7775	B1=20.9, B2=20.6, R1=19.6	USNO-B1
65.1	23.7708	83.8100		NED
66.2	23.9442	83.8036		NED
67.6	23.9404	83.7803		NED
68.2	23.9804	83.7961		NED
70.0	23.8850	83.8100		NED
71.9	23.7271	83.7744		NED
72.0	23.9929	83.7925		NED
72.4	23.6467	83.8025		NED
73.0	23.6225	83.7956		NED
76.1	23.6146	83.7894		NED
76.7	23.9075	83.8109	I=15.2, R1=19.5	USNO-B1
78.2	23.9179	83.8106		NED
80.0	24.0063	83.7867		NED
81.9	23.7338	83.8139		NED
82.6	24.0109	83.7858	B=21.6, R=19.4	APM-N
83.9	23.8517	83.8153		NED
87.8	23.5896	83.7867		NED
88.0	23.6192	83.8061		NED
89.7	23.6696	83.8125		NED
90.4	24.0321	83.7992		NED
90.5	23.9117	83.7700		NED
91.4	23.6099	83.8061	B1=20.9, I=17.5, R1=19.1	USNO-B1
91.6	23.7521	83.7678		NED
92.8	23.6129	83.7778		NED
97.3	23.7142	83.8175		NED
97.4	23.5579	83.7936		NED
97.8	23.5633	83.7986		NED
98.0	23.6340	83.7729	B1=20.4, I=17.6	USNO-B1
98.1	23.6208	83.8108		NED
98.4	23.6365	83.7724	B2=19.9, R1=18.6, R2=19.0	USNO-B1
99.8	23.9688	83.7708		NED
100.0	23.7300	83.7661		NED
100.1	23.6752	83.8163	R1=19.5, R2=20.0	USNO-B1
100.6	23.9628	83.7701	B1=20.9, I=17.3	USNO-B1
100.8	23.5541	83.7872	B1=21.8, B2=20.7	USNO-B1
100.8	23.5554	83.7987	B1=20.9, I=16.2	USNO-B1
101.0	23.6733	83.8164		NED
102.0	23.5862	83.8075		NED
102.0	23.6062	83.7744		NED
102.7	23.5721	83.8053		NED
103.1	23.8604	83.8206		NED
103.2	23.6344	83.7709	B=16.8, R=15.6	APM-N
103.4	23.6354	83.7707	B=16.9, R=15.7	APM-N
103.7	23.6342	83.7708		NED
103.8	23.9525	83.8167		NED
105.8	24.0598	83.8036	I=18.1, R1=19.1	USNO-B1
108.3	24.0658	83.8039		NED
108.9	24.0533	83.8072		NED
109.0	24.0488	83.8080	I=15.9, R1=19.3	USNO-B1
109.4	23.8204	83.8228		NED
110.5	23.9534	83.7662	B1=21.3, B2=21.0	USNO-B1
111.3	24.0921	83.7958		NED
111.4	23.6096	83.8147		NED
111.5	23.8675	83.7622		NED
112.9	23.5188	83.7906		NED
113.0	24.0982	83.7913	B=20.1, R=18.1	APM-N
113.2	24.0988	83.7914	B=19.8, R=17.3	APM-N
113.3	24.0704	83.7789		NED
113.6	24.0998	83.7915	B1=20.6, R1=17.9, R2=17.6	USNO-B1
114.1	23.7234	83.8228	B1=21.3, I=18.3	USNO-B1
114.5	24.1021	83.7914		NED
115.6	23.7277	83.8234	B=20.0, R=18.3	APM-N
115.9	23.7258	83.8233		NED
116.0	23.7688	83.8244		NED
116.5	24.0988	83.7850		NED
116.6	23.5192	83.8011		NED
116.7	23.5182	83.8008	B=15.9, R=14.7	APM-N
117.4	23.8330	83.8250	B1=21.1, B2=20.6, R2=19.9	USNO-B1
117.8	23.8933	83.8239		NED
118.3	24.0175	83.7686		NED
118.5	23.7740	83.7598	B1=20.9, B2=20.6, R1=19.6, R2=19.8	USNO-B1
118.5	23.5762	83.8139		NED
119.2	23.5700	83.7717		NED
120.5	23.6750	83.8228		NED
121.0	23.5100	83.8022		NED
121.5	23.8175	83.7589		NED
122.7	23.5007	83.8001	B1=20.6, B2=18.9, I=18.1, R1=18.5, R2=18.8	USNO-B1
123.0	24.0992	83.8058		NED
123.5	24.0208	83.8181		NED
124.2	24.0163	83.8187	B1=20.7, I=18.3	USNO-B1
124.2	23.9629	83.8228		NED
124.3	23.4963	83.8001	I=17.9, R1=19.0, R2=16.5	USNO-B1
124.4	24.1017	83.7789		NED
124.5	24.1035	83.8058	B=17.3, R=16.1	APM-N
125.4	23.9367	83.7606		NED
125.6	23.6603	83.8235	B=19.9, R=18.6	APM-N
126.7	23.5463	83.8133		NED
126.7	23.9983	83.7639		NED
127.0	23.4892	83.8000		NED
127.1	23.8442	83.8275		NED
127.4	23.6638	83.7608		NED
128.2	23.5967	83.8197		NED
129.0	23.5295	83.8120	B1=21.6, R1=19.4	USNO-B1
129.4	23.5742	83.7669		NED
129.6	23.5181	83.7749	B1=21.7, B2=20.7, I=18.4, R2=20.5	USNO-B1
129.9	23.6419	83.8238	B1=21.7, I=18.2	USNO-B1
129.9	24.0636	83.7693	I=18.3, R1=18.1	USNO-B1
131.3	23.5063	83.8089		NED
132.4	23.9221	83.8272		NED
132.9	23.5437	83.7692		NED
133.4	23.5104	83.8111		NED
134.0	24.0733	83.7689		NED
134.1	23.8708	83.8292		NED
134.2	23.8338	83.8297		NED
134.3	24.1500	83.7975		NED
134.6	24.1025	83.8122		NED
134.6	23.7500	83.8294		NED
135.0	23.7529	83.8295	B=21.3, R=19.4	APM-N
136.0	23.4945	83.8092	B1=21.4, I=16.2, R1=19.8	USNO-B1
137.2	24.1421	83.7803		NED
137.9	23.5813	83.7631		NED
138.0	23.9921	83.7597		NED
139.0	23.4587	83.7847		NED
139.1	23.5792	83.8222		NED
139.6	23.5417	83.8186		NED
139.7	23.6469	83.7578	B1=22.1, R1=19.6	USNO-B1
140.2	24.0329	83.7622		NED
140.4	24.0340	83.7621	B=19.6, R=17.2	APM-N
141.9	23.6500	83.8281		NED
142.1	23.6442	83.7572		NED
142.7	24.0975	83.7683		NED
142.7	23.8275	83.7528		NED
143.3	23.8579	83.8319		NED
143.8	23.5033	83.7700		NED
143.9	23.7320	83.7534	B1=20.8, B2=20.4, I=18.0, R1=19.0, R2=18.9	USNO-B1
143.9	24.1713	83.7853		NED
144.0	23.5925	83.7600		NED
144.0	24.0565	83.7629	I=17.4, R1=18.3	USNO-B1
144.2	23.7333	83.7533		NED
145.8	24.0629	83.7628		NED
146.1	23.8871	83.7528		NED
146.1	24.0626	83.7627	B=21.6, R=18.5	APM-N
146.2	23.8254	83.8331	B1=21.1, R1=19.9	USNO-B1
146.3	24.0629	83.7627	B=22.1, R=19.1	APM-N
146.3	23.9629	83.7556		NED
146.6	23.6125	83.7578		NED
147.0	23.7913	83.8333		NED
147.4	23.9308	83.8311		NED
147.8	23.4942	83.8158		NED
148.4	23.5254	83.7650		NED
148.5	23.8538	83.7517		NED
148.5	24.1846	83.7994		NED
149.0	23.5625	83.7608		NED
150.3	23.8555	83.7511	B2=20.3, R1=19.5, R2=19.1	USNO-B1
150.4	23.5933	83.8272		NED
150.6	24.1652	83.7765	B1=17.1, B2=16.8, I=14.2, R1=15.5, R2=15.2	USNO-B1
150.7	24.1650	83.7764		NED
151.6	24.1676	83.7764	B=17.2, R=15.7	APM-N
151.6	24.0695	83.8238	I=16.8, R1=19.1	USNO-B1
151.7	24.0758	83.8231		NED
152.2	24.1029	83.7647		NED
153.2	24.0392	83.8269		NED
153.8	23.7508	83.7503		NED
154.3	23.4200	83.7839		NED
154.8	23.8963	83.7506		NED
155.0	23.4100	83.7928		NED
155.3	23.4329	83.8073	B=21.4, R=20.0	APM-N
155.6	23.4083	83.7928		NED
155.8	23.7383	83.7500		NED
156.7	23.4279	83.8069		NED
156.8	23.5550	83.8264		NED
156.8	23.4281	83.8071	B2=20.7, R1=19.4	USNO-B1
156.9	23.9863	83.8317		NED
157.3	23.5031	83.8213	B=20.4, R=18.5	APM-N
157.4	24.1600	83.7711		NED
157.7	23.5008	83.8211		NED
158.4	23.4012	83.7938	B=19.2, R=16.9	APM-N
158.8	23.7763	83.7486		NED
159.1	23.8283	83.8367	B1=20.7, B2=20.4, I=17.6, R1=19.2, R2=19.0	USNO-B1
159.3	23.8288	83.8367		NED
159.7	23.3979	83.7934	B1=19.9, I=15.9, R1=17.0	USNO-B1
159.8	23.4029	83.7997		NED
161.0	23.4164	83.8070	B1=21.7, B2=20.7	USNO-B1
161.7	24.2204	83.7872		NED
162.1	23.6588	83.8345	B=21.2, R=19.0	APM-N
163.1	23.5829	83.7544		NED
163.5	23.7739	83.8378	B=20.4, R=20.0	APM-N
163.8	23.7717	83.8378		NED
163.8	23.7717	83.8378	B=20.1, R=19.6	APM-N
164.3	24.0433	83.7547		NED
164.4	24.2238	83.8008		NED
164.4	23.6938	83.7486		NED
164.4	23.6964	83.7485	B=19.4, R=18.4	APM-N
165.4	24.0796	83.8278		NED
165.9	23.9781	83.8348	B=21.5, R=20.0	APM-N
166.1	24.0667	83.7558		NED
167.0	23.6437	83.7497		NED
167.0	23.5129	83.7589		NED
167.0	24.2371	83.7931		NED
167.5	24.2042	83.8108		NED
168.0	23.6315	83.8351	B=19.1, R=17.4	APM-N
168.0	23.6329	83.8352	B=19.7, R=17.8	APM-N
168.2	23.5994	83.7516	B=19.6, R=17.8	APM-N
168.2	23.6300	83.8350		NED
168.2	23.5975	83.7517		NED
168.5	24.1137	83.7594		NED
169.5	23.4175	83.8133		NED
169.9	24.0983	83.7572		NED
170.0	23.4513	83.7653		NED
171.1	23.4775	83.7614		NED
171.1	23.3792	83.7822		NED
171.4	23.7245	83.8392	B=17.1, R=16.2	APM-N
172.4	23.7213	83.8394		NED
172.4	24.0129	83.7500		NED
173.0	23.9621	83.8375		NED
173.3	23.7112	83.8395	B1=21.6, I=15.6	USNO-B1
173.4	23.6558	83.7473	B1=21.0, I=17.7	USNO-B1
173.5	23.9575	83.7472		NED
173.7	23.6569	83.7471	B=21.6, R=19.2	APM-N
173.8	23.9602	83.7471	B=21.9, R=19.5	APM-N
173.9	23.3621	83.7894		NED
174.0	23.4250	83.7678		NED
174.2	23.6579	83.7469		NED
174.3	23.3671	83.8011		NED
174.3	23.8938	83.7450		NED
174.7	23.8154	83.7439		NED
175.0	24.1843	83.7660	B1=21.7, I=18.3	USNO-B1
176.6	24.2425	83.7786		NED
177.7	23.7750	83.8417		NED
177.8	24.1525	83.7603		NED
178.1	23.6471	83.8389		NED
178.4	23.9446	83.7453		NED
178.4	24.2300	83.8119		NED
178.7	23.6075	83.8372	B1=21.9, I=17.6	USNO-B1
178.7	23.7817	83.7431		NED
178.8	23.6479	83.8391	B=21.6, R=19.1	APM-N
179.3	24.2650	83.7864		NED
180.1	24.2654	83.8003		NED
182.3	24.1375	83.7567		NED
182.8	23.4300	83.8228		NED
183.9	23.7292	83.8428		NED
184.7	23.3346	83.7964		NED
185.3	23.3733	83.8136		NED
185.4	23.7963	83.7411		NED
185.6	24.1679	83.8264		NED
185.8	23.3725	83.8138	B1=21.8, B2=18.6, I=17.6	USNO-B1
186.4	23.3701	83.8136	B1=21.8, I=17.6	USNO-B1
187.1	23.7696	83.8444		NED
188.0	24.2304	83.8181		NED
189.1	24.2892	83.7997		NED
189.3	23.3413	83.8075		NED
189.4	23.8858	83.7406		NED
189.7	23.6321	83.8417		NED
190.6	23.8283	83.8454	I=18.3, R1=19.8	USNO-B1
190.8	23.6727	83.7416	B1=18.1, B2=17.8, I=16.0, R1=16.8, R2=16.6	USNO-B1
190.9	23.8283	83.8456		NED
191.1	23.6725	83.7414		NED
191.4	23.5775	83.7456		NED
191.6	23.7344	83.7399	B=21.6, R=20.0	APM-N
192.3	24.3013	83.7956	R1=19.6, R2=19.7	USNO-B1
192.5	23.4619	83.7544	B=21.6, R=20.0	APM-N
193.0	24.3033	83.7953		NED
193.6	23.4925	83.8342		NED
194.0	24.0000	83.7428		NED
194.2	24.1246	83.7509	B1=17.5, B2=17.0, I=14.7, R1=15.9, R2=15.6	USNO-B1
194.2	23.6513	83.8436		NED
194.5	24.1246	83.7508		NED
195.1	23.3083	83.7886		NED
195.2	23.3600	83.8169		NED
195.9	23.3358	83.7739		NED
196.4	24.2571	83.7678		NED
196.6	23.9708	83.8442		NED
196.9	23.3267	83.8094		NED
197.4	24.1499	83.7521	B=21.9, R=20.0	APM-N
197.5	23.8883	83.8467		NED
198.1	24.1828	83.7554	B1=20.4, B2=19.6, I=17.5, R1=18.0, R2=18.2	USNO-B1
198.4	24.1833	83.7553		NED
199.8	23.8083	83.8481		NED
199.8	23.9346	83.8464		NED
199.9	23.7350	83.8475		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