Swift Trigger: 1278865;

Presumed name: GRB 250103B

BAT	03^h 38^m 36.24^s, -33° 46′ 19.2″
position:	(54.651, -33.772 ± 180″)
XRT	03^h 38^m 39.37^s, -33° 44′ 58.7″
position:	(54.66403, -33.74965 ± 1.9″)
UVOT	No position available.
Galactic N_HI:	9.74×10¹⁹ cm^-2
Galactic E(B-V):	0.010 mag

Best RA:	03^h 38^m 39.37^s	= 54.66403 d
Best Dec:	-33° 44′ 58.7″	= -33.74965 d

Gal Lat:	-53.6
Gal Long:	233.85

Sun angle:	106.31°, -8.7 hr East of Sun

Galaxies within 200 of XRT position

	RA*	Dec*		Catalogue
16.4	54.6654	-33.7453		NED
37.6	54.6729	-33.7422		NED
37.8	54.6527	-33.7543	B2=21.4, I=18.8, R2=20.1	USNO-B1
38.0	54.6525	-33.7542		NED
39.6	54.6594	-33.7394	B2=19.6, R2=20.1	USNO-B1
46.7	54.6788	-33.7533	Mag=19.8	NED
49.8	54.6558	-33.7617	B2=21.4, R2=20.1	USNO-B1
50.9	54.6646	-33.7639		NED
51.4	54.6554	-33.7619		NED
51.4	54.6593	-33.7359	B2=16.1, R2=19.5	USNO-B1
52.7	54.6517	-33.7603		NED
57.2	54.6504	-33.7386		NED
59.2	54.6525	-33.7364		NED
63.2	54.6850	-33.7517		NED
65.7	54.6808	-33.7614		NED
67.0	54.6655	-33.7311	I=18.0, R2=19.8	USNO-B1
67.0	54.6652	-33.7311	I=18.0, R2=19.2	USNO-B1
68.8	54.6775	-33.7650		NED
69.7	54.6596	-33.7306		NED
70.4	54.6854	-33.7572	Mag=19.47	NED
71.3	54.6400	-33.7489		NED
74.5	54.6562	-33.7694		NED
75.2	54.6887	-33.7475		NED
80.6	54.6412	-33.7378		NED
82.5	54.6479	-33.7311	B2=20.6, R2=20.0	USNO-B1
84.0	54.6875	-33.7372		NED
84.9	54.6408	-33.7631		NED
86.2	54.6638	-33.7736		NED
87.7	54.6713	-33.7733	B=22.2	SSS
88.1	54.6713	-33.7733		NED
89.9	54.6937	-33.7508		NED
90.2	54.6542	-33.7733		NED
90.3	54.6908	-33.7608		NED
92.8	54.6929	-33.7406		NED
93.6	54.6362	-33.7375		NED
94.6	54.6595	-33.7236	B2=19.5, R1=19.9, R2=20.0	USNO-B1
95.6	54.6404	-33.7319		NED
98.3	54.6321	-33.7433		NED
100.3	54.6858	-33.7706		NED
100.4	54.6859	-33.7708	B2=21.2, R2=20.0	USNO-B1
101.0	54.6900	-33.7675	Mag=20.43	NED
101.4	54.6900	-33.7677	B=20.5, R2=19.3	SSS
102.3	54.6863	-33.7281		NED
102.8	54.6788	-33.7756		NED
103.7	54.6775	-33.7231		NED
104.5	54.6979	-33.7558		NED
106.3	54.6817	-33.7242		NED
107.5	54.6321	-33.7361		NED
109.6	54.6850	-33.7247		NED
110.6	54.6558	-33.7197		NED
110.8	54.6958	-33.7342		NED
112.0	54.6904	-33.7278		NED
112.7	54.6271	-33.7561		NED
114.2	54.7021	-33.7469		NED
115.1	54.6496	-33.7794		NED
115.2	54.6467	-33.7783		NED
116.9	54.6967	-33.7672		NED
118.6	54.6313	-33.7314		NED
119.4	54.6971	-33.7683	B=22.7	SSS
120.2	54.6883	-33.7764		NED
120.8	54.6912	-33.7744		NED
121.7	54.6454	-33.7197		NED
123.4	54.6638	-33.7839		NED
123.7	54.6267	-33.7644		NED
125.4	54.6596	-33.7842		NED
125.9	54.7019	-33.7344	B=20.9	SSS
126.4	54.6962	-33.7272		NED
127.0	54.7021	-33.7342		NED
127.3	54.6504	-33.7161		NED
127.8	54.6508	-33.7833		NED
128.7	54.6750	-33.7842	Mag=19.7	NED
129.5	54.6208	-33.7542		NED
129.7	54.6817	-33.7167		NED
130.7	54.6757	-33.7846	B2=20.7, R1=20.1	USNO-B1
130.8	54.6392	-33.7197		NED
130.9	54.6421	-33.7181		NED
134.8	54.6658	-33.7869		NED
135.1	54.6254	-33.7303		NED
135.4	54.6204	-33.7400		NED
139.3	54.6746	-33.7872		NED
139.5	54.7046	-33.7686		NED
140.9	54.6867	-33.7153		NED
141.7	54.7112	-33.7483		NED
143.4	54.6217	-33.7686		NED
143.5	54.6219	-33.7687	B2=17.0, I=16.2, R1=16.9, R2=16.6	USNO-B1
143.9	54.6308	-33.7786		NED
144.7	54.6267	-33.7239		NED
148.0	54.6146	-33.7536		NED
150.2	54.6650	-33.7081		NED
150.8	54.7142	-33.7475		NED
150.8	54.6160	-33.7369	B=21.7	SSS
150.8	54.7144	-33.7478	B2=21.6, I=18.8	USNO-B1
151.6	54.6158	-33.7367		NED
152.0	54.6233	-33.7750		NED
154.6	54.6667	-33.7925		NED
154.9	54.6350	-33.7142		NED
154.9	54.7125	-33.7344		NED
156.7	54.6829	-33.7092		NED
156.8	54.6742	-33.7925		NED
156.8	54.6271	-33.7189		NED
157.0	54.6725	-33.7928		NED
157.4	54.6933	-33.7858		NED
158.3	54.7158	-33.7578		NED
159.1	54.6438	-33.7089		NED
159.1	54.6154	-33.7314		NED
159.5	54.6129	-33.7625	Mag=18.6	NED
159.7	54.6121	-33.7394		NED
159.9	54.6500	-33.7067		NED
161.0	54.7177	-33.7521	B=22.5	SSS
161.0	54.6221	-33.7217		NED
161.5	54.6775	-33.7061		NED
161.8	54.6250	-33.7806		NED
162.1	54.6779	-33.7061		NED
162.4	54.6225	-33.7789		NED
162.5	54.6650	-33.7044		NED
163.2	54.6917	-33.7886		NED
165.1	54.7058	-33.7200		NED
165.4	54.6525	-33.7947		NED
166.3	54.6233	-33.7181		NED
166.9	54.7167	-33.7653		NED
167.0	54.6446	-33.7061		NED
167.2	54.7175	-33.7364		NED
167.4	54.7176	-33.7363	B=22.4, R2=20.4	SSS
167.9	54.6150	-33.7267		NED
168.8	54.7167	-33.7328		NED
168.9	54.6079	-33.7436		NED
169.1	54.6692	-33.7964		NED
169.3	54.6079	-33.7433		NED
169.4	54.7071	-33.7803		NED
169.8	54.6854	-33.7061		NED
170.0	54.6179	-33.7219		NED
170.3	54.7204	-33.7447		NED
170.4	54.7117	-33.7753		NED
174.1	54.6108	-33.7692		NED
174.3	54.6575	-33.7978		NED
174.9	54.7225	-33.7500		NED
175.4	54.6104	-33.7303		NED
175.9	54.6736	-33.7979	B=21.9	SSS
176.0	54.6733	-33.7978		NED
176.1	54.7162	-33.7717		NED
177.5	54.6775	-33.7978		NED
177.5	54.6612	-33.7989		NED
178.7	54.6042	-33.7506		NED
178.7	54.6781	-33.7979	B=22.6	SSS
179.0	54.7229	-33.7581		NED
179.5	54.6442	-33.7967		NED
179.8	54.6441	-33.7968	B=22.0	SSS
181.3	54.6775	-33.7006		NED
181.8	54.6173	-33.7819	B=22.4	SSS
182.7	54.6998	-33.7085	B=22.6	SSS
182.8	54.6937	-33.7053		NED
182.9	54.6369	-33.7952	B=21.9	SSS
183.3	54.7122	-33.7183	I=18.7, R1=20.1, R2=20.1	USNO-B1
183.7	54.7121	-33.7181		NED
184.1	54.6817	-33.7006		NED
185.2	54.6050	-33.7339		NED
185.9	54.6113	-33.7219		NED
186.5	54.7208	-33.7286		NED
187.1	54.6704	-33.6981		NED
187.7	54.6333	-33.7042		NED
188.0	54.6446	-33.7992		NED
188.8	54.6283	-33.7931	Mag=20.0	NED
188.9	54.6858	-33.7006		NED
189.7	54.6289	-33.7935	B2=20.6, R1=19.9	USNO-B1
189.7	54.6287	-33.7934	B=21.1, R2=19.8	SSS
190.0	54.6146	-33.7831		NED
190.9	54.6054	-33.7289		NED
190.9	54.6692	-33.8025		NED
191.6	54.7062	-33.7097		NED
192.5	54.7079	-33.7886		NED
192.7	54.6654	-33.6961		NED
193.0	54.7114	-33.7860	B=20.3, R2=18.8, i=17.8	SSS
193.0	54.7112	-33.7861	Mag=20.24	NED
193.8	54.6012	-33.7628		NED
195.5	54.7262	-33.7336		NED
195.6	54.7292	-33.7533		NED
196.1	54.6525	-33.8033	Mag=19.67	NED
196.3	54.6650	-33.8042		NED
196.5	54.6523	-33.8034	B=19.8, R2=19.0, i=18.9	SSS
196.7	54.6096	-33.7803		NED
197.0	54.6075	-33.7778		NED
197.2	54.7033	-33.7936	B2=20.1, I=18.2, R1=19.3, R2=19.4	USNO-B1
197.9	54.7029	-33.7939	Mag=18.4	NED
197.9	54.7292	-33.7583	Mag=20.3	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