Swift Trigger: 878911;

Presumed name: GRB 181224A

BAT	08^h 23^m 43.44^s, +06° 12′ 21.6″
position:	(125.931, 6.206 ± 180″)
XRT	No position available.
UVOT	No position available.
Galactic N_HI:	2.30×10⁰ cm^-2
Galactic E(B-V):	0.026 mag

Best RA:	08^h 23^m 43.44^s	= 125.931 d
Best Dec:	+06° 12′ 21.6″	= 6.206 d

Gal Lat:	23.33
Gal Long:	218.02

Sun angle:	143.66°, 9.8 hr West

Galaxies within 3.33 of BAT position

	RA*	Dec*	Redshift		Catalogue
8.5	125.9329	6.2072	0.643102	Mag=22.2	NED
8.5	125.9330	6.2073		R=20.5, g=21.9, i=19.6, u=22.7, z=19.0	SDSS
8.9	125.9287	6.2068		R=21.5, g=21.8, i=21.2, u=22.0, z=22.4	SDSS
10.9	125.9325	6.2033		Mag=23.5	NED
17.5	125.9342	6.2025		Mag=23.0	NED
24.2	125.9321	6.2125		Mag=24.7	NED
28.3	125.9307	6.2139		R=21.3, g=22.7, i=20.5, u=22.9, z=20.2	SDSS
28.3	125.9308	6.2139		Mag=21.9	NED
33.3	125.9250	6.2131		Mag=20.7	NED
33.4	125.9229	6.2017		Mag=19.6	NED
36.1	125.9373	6.1981		R=22.6, g=23.7, i=20.6, u=25.2, z=19.6	SDSS
42.4	125.9192	6.2054		R=21.7, g=22.6, i=21.1, u=24.2, z=20.6	SDSS
42.4	125.9192	6.2053		Mag=22.0	NED
42.7	125.9337	6.2175		Mag=24.1	NED
44.2	125.9325	6.1939		Mag=22.1	NED
46.3	125.9188	6.2014		Mag=23.5	NED
47.5	125.9376	6.1945		B1=20.7, R1=19.5	USNO-B1
50.0	125.9371	6.2186		Mag=18.2	NED
54.0	125.9317	6.1911		Mag=22.4	NED
54.0	125.9319	6.1910		R=21.5, g=22.6, i=21.2, u=24.3, z=20.4	SDSS
54.1	125.9408	6.1944		Mag=19.6	NED
54.8	125.9443	6.1984		R=21.5, g=22.9, i=20.5, u=25.7, z=20.7	SDSS
55.9	125.9364	6.1914		R=22.2, g=23.5, i=21.4, u=24.0, z=21.8	SDSS
57.2	125.9429	6.1958		Mag=17.7	NED
59.3	125.9475	6.2056		Mag=19.2	NED
59.6	125.9450	6.2150		Mag=21.2	NED
59.6	125.9449	6.2151		R=20.5, g=21.3, i=20.3, u=21.8, z=19.8	SDSS
61.4	125.9392	6.1910		R=21.8, g=22.7, i=21.7, u=24.7, z=21.3	SDSS
61.4	125.9392	6.1911		Mag=22.3	NED
65.9	125.9424	6.2204		R=21.5, g=23.2, i=20.5, u=25.5, z=19.7	SDSS
65.9	125.9425	6.2203		Mag=22.5	NED
69.2	125.9118	6.2040		R=22.9, g=24.9, i=21.7, u=22.9, z=21.4	SDSS
71.8	125.9450	6.2203		Mag=21.3	NED
75.3	125.9196	6.2236		Mag=21.1	NED
75.3	125.9195	6.2235		R=21.7, g=23.6, i=21.1, u=23.0, z=20.8	SDSS
76.9	125.9508	6.2143		R=20.2, g=21.3, i=19.8, u=22.1, z=19.3	SDSS
76.9	125.9508	6.2142		Mag=21.3	NED
78.1	125.9525	6.2089		Mag=23.0	NED
79.0	125.9112	6.2164		Mag=19.3	NED
82.5	125.9177	6.1872		R=21.1, g=23.8, i=20.2, u=22.5, z=19.6	SDSS
82.6	125.9175	6.1872		Mag=23.1	NED
82.9	125.9267	6.1833		Mag=20.9	NED
82.9	125.9269	6.1833		R=20.1, g=21.0, i=19.8, u=22.8, z=20.0	SDSS
83.0	125.9159	6.1885		R=22.5, g=24.7, i=21.3, u=24.9, z=20.7	SDSS
84.6	125.9429	6.1858		Mag=20.4	NED
85.4	125.9227	6.2283		B1=20.2, R1=19.3	USNO-B1
85.5	125.9504	6.2194		Mag=23.9	NED
86.6	125.9297	6.1820		R=22.7, g=23.4, i=21.6, u=23.7, z=21.7	SDSS
88.1	125.9383	6.2294		Mag=19.6	NED
90.3	125.9065	6.2000		R=19.6, g=20.4, i=19.3, u=21.2, z=19.4	SDSS
90.3	125.9062	6.2000		Mag=20.1	NED
98.4	125.9037	6.2086		Mag=17.2	NED
98.6	125.9130	6.2267		R=20.9, g=22.9, i=20.3, u=24.0, z=20.1	SDSS
98.6	125.9129	6.2267		Mag=22.6	NED
98.7	125.9337	6.1787		R=22.4, g=23.2, i=22.0, u=25.1, z=21.1	SDSS
99.1	125.9200	6.2311		Mag=22.8	NED
99.4	125.9306	6.1784		R=22.5, g=24.0, i=21.2, u=24.0, z=20.6	SDSS
103.3	125.9121	6.1844		Mag=21.4	NED
103.4	125.9250	6.2342		Mag=22.0	NED
104.5	125.9020	6.2090		R=21.4, g=22.4, i=21.4, u=25.0, z=21.0	SDSS
104.5	125.9021	6.2092		Mag=22.1	NED
105.1	125.9040	6.1946		R=24.0, g=25.2, i=23.5, u=23.3, z=19.4	SDSS
106.4	125.9529	6.1860		B=21.6, R=19.9	APM-N
106.4	125.9607	6.2054		R=23.3, g=22.9, i=20.7, u=23.2, z=19.8	SDSS
106.8	125.9044	6.1925		R=22.7, g=24.9, i=21.4, u=23.1, z=21.3	SDSS
106.8	125.9587	6.1953		Mag=19.9	NED
107.3	125.9050	6.2211		Mag=19.9	NED
107.6	125.9604	6.2119		Mag=22.4	NED
107.6	125.9605	6.2120		R=21.7, g=23.2, i=20.7, u=23.1, z=20.2	SDSS
110.8	125.9279	6.2367		Mag=19.4	NED
111.7	125.9453	6.1784		R=22.3, g=23.4, i=20.8, u=23.3, z=20.7	SDSS
112.2	125.9009	6.2147		R=22.0, g=23.0, i=21.6, u=23.5, z=20.9	SDSS
112.3	125.9008	6.2147		Mag=22.1	NED
113.1	125.9350	6.1747		Mag=23.9	NED
113.1	125.9349	6.1748		R=22.0, g=23.9, i=21.1, u=24.4, z=20.5	SDSS
113.6	125.9521	6.1825		Mag=22.7	NED
113.7	125.9521	6.1824		R=21.5, g=22.8, i=21.2, u=23.3, z=21.2	SDSS
114.8	125.9087	6.2292		Mag=19.2	NED
115.2	125.9128	6.1796		R=22.0, g=23.5, i=22.2, u=22.9, z=21.2	SDSS
115.8	125.9633	6.2067		R=22.3, g=23.4, i=21.3, u=24.1, z=20.4	SDSS
116.1	125.9217	6.2369		Mag=18.2	NED
116.3	125.9304	6.2383		Mag=22.3	NED
117.2	125.9579	6.1875		Mag=20.5	NED
117.3	125.8986	6.2107		R=23.3, g=22.9, i=22.3, u=24.6, z=22.5	SDSS
118.1	125.9467	6.2350		Mag=23.0	NED
119.2	125.9610	6.2204		I=17.6, R1=17.2	USNO-B1
120.6	125.9533	6.1809		B1=20.4, R1=19.1	USNO-B1
121.7	125.9217	6.2386		Mag=22.9	NED
121.8	125.9005	6.1909		R=22.9, g=23.7, i=21.8, u=24.0, z=23.0	SDSS
123.2	125.9371	6.2397		Mag=21.9	NED
123.7	125.9142	6.1760		R=25.6, g=26.5, i=26.1, u=25.2, z=20.2	SDSS
123.8	125.9001	6.2215		R=22.5, g=23.3, i=21.6, u=25.7, z=21.4	SDSS
123.9	125.9538	6.1801		R=22.7, g=25.2, i=21.1, u=23.6, z=20.1	SDSS
124.4	125.9050	6.1831		Mag=23.2	NED
125.0	125.9629	6.1919		Mag=16.8	NED
125.9	125.9588	6.2274		R=21.7, g=22.4, i=20.9, u=22.4, z=19.8	SDSS
125.9	125.9587	6.2275		Mag=22.5	NED
126.5	125.9062	6.2311		Mag=23.5	NED
126.5	125.9063	6.2311		R=22.0, g=23.2, i=21.6, u=22.7, z=21.3	SDSS
127.0	125.9250	6.2408		Mag=22.6	NED
128.3	125.8980	6.1922		R=20.1, g=21.5, i=19.4, u=22.6, z=19.2	SDSS
128.3	125.8979	6.1922		Mag=21.2	NED
128.4	125.9651	6.2170		R=22.2, g=23.3, i=21.0, u=23.4, z=20.6	SDSS
128.4	125.9019	6.2268		R=21.6, g=22.2, i=21.0, u=23.3, z=20.6	SDSS
128.5	125.9017	6.2269		Mag=22.6	NED
131.2	125.9589	6.2297		R=22.4, g=23.9, i=20.8, u=23.0, z=20.1	SDSS
131.3	125.9045	6.2312		R=22.7, g=24.4, i=21.1, u=23.4, z=21.1	SDSS
131.3	125.9354	6.1697		Mag=23.7	NED
131.4	125.9355	6.1698		R=21.7, g=23.6, i=20.8, u=23.3, z=20.6	SDSS
132.5	125.9121	6.2378		Mag=19.5	NED
134.1	125.9054	6.2331		Mag=20.8	NED
134.1	125.9450	6.1714		Mag=22.4	NED
134.1	125.9053	6.2331		R=19.9, g=20.4, i=19.6, u=21.6, z=19.6	SDSS
134.1	125.9451	6.1715		R=21.3, g=22.2, i=20.7, u=22.8, z=20.5	SDSS
134.5	125.9675	6.2153		Mag=23.3	NED
134.7	125.9181	6.2412		R=21.8, g=23.6, i=21.2, u=25.6, z=20.1	SDSS
134.7	125.9179	6.2411		Mag=22.9	NED
134.9	125.9318	6.1685		R=22.1, g=23.0, i=21.6, u=22.3, z=21.7	SDSS
135.5	125.8950	6.2178		Mag=20.7	NED
135.7	125.9052	6.2337		B2=20.7, I=18.3	USNO-B1
135.9	125.9535	6.2364		R=23.2, g=23.8, i=21.2, u=22.9, z=20.3	SDSS
136.1	125.9019	6.2304		R=19.2, g=20.1, i=18.8, u=21.1, z=18.4	SDSS
136.1	125.9017	6.2303		Mag=20.1	NED
136.4	125.9262	6.1683		Mag=18.0	NED
136.7	125.9577	6.1789		R=23.6, g=24.5, i=21.5, u=25.9, z=21.6	SDSS
137.1	125.9237	6.2434		B1=21.1, I=18.0	USNO-B1
137.8	125.9392	6.2433		Mag=22.9	NED
137.8	125.9391	6.2434		R=22.1, g=23.0, i=22.2, u=25.6, z=22.1	SDSS
138.2	125.9238	6.2439	0.620157	Mag=22.9	NED
138.4	125.9029	6.1794		Mag=21.2	NED
138.5	125.9240	6.2438		R=21.3, g=23.3, i=20.1, u=24.2, z=19.7	SDSS
138.7	125.9233	6.1683		Mag=17.1	NED
139.3	125.9503	6.2396		R=25.3, g=23.9, i=22.8, u=23.2, z=20.0	SDSS
140.3	125.9279	6.1672		Mag=22.0	NED
140.3	125.9281	6.1671		R=21.3, g=22.2, i=21.3, u=22.5, z=21.8	SDSS
140.8	125.8933	6.1947		Mag=18.9	NED
141.1	125.8958	6.2236		Mag=22.3	NED
141.1	125.8958	6.2236		R=21.8, g=22.6, i=21.7, u=22.6, z=21.4	SDSS
141.3	125.9237	6.2446		R=21.6, g=22.5, i=21.1, u=26.4, z=20.5	SDSS
141.7	125.9454	6.1694		Mag=22.6	NED
141.7	125.8978	6.2275		R=21.7, g=23.5, i=20.6, u=25.6, z=20.5	SDSS
141.8	125.9125	6.2408		Mag=22.6	NED
143.8	125.9227	6.2451		R=22.6, g=24.3, i=21.1, u=23.2, z=20.6	SDSS
145.3	125.8925	6.1931		R=21.8, g=23.5, i=20.5, u=25.9, z=20.0	SDSS
147.1	125.9704	6.2167		Mag=14.8	NED
147.6	125.9365	6.2466		R=21.6, g=23.6, i=20.6, u=22.5, z=19.8	SDSS
147.8	125.9175	6.1672		Mag=14.7	NED
148.3	125.9217	6.2461		Mag=22.6	NED
149.2	125.9608	6.1772		Mag=14.7	NED
151.7	125.9712	6.2194		R=21.2, g=22.6, i=20.2, u=24.2, z=19.6	SDSS
152.3	125.8996	6.2344		Mag=23.1	NED
153.9	125.9017	6.1747		Mag=22.7	NED
154.3	125.9733	6.1978		Mag=22.3	NED
154.3	125.9733	6.1978		R=21.3, g=22.4, i=21.0, u=24.4, z=20.9	SDSS
154.4	125.9321	6.2489		Mag=22.0	NED
154.8	125.9323	6.2490		I=17.1, R1=19.2, R2=19.3	USNO-B1
154.8	125.9041	6.2397		R=22.4, g=22.8, i=22.6, u=24.5, z=19.0	SDSS
156.2	125.9158	6.2467		Mag=20.9	NED
156.5	125.9417	6.2481		R=21.9, g=22.7, i=21.7, u=25.9, z=20.4	SDSS
156.5	125.8875	6.2022		Mag=19.5	NED
156.5	125.9417	6.2481		Mag=22.5	NED
157.3	125.9328	6.2496		B=21.6, R=18.6	APM-N
157.4	125.9329	6.2497		Mag=20.6	NED
157.5	125.9687	6.2286		R=22.7, g=22.8, i=23.2, u=24.1, z=21.8	SDSS
157.6	125.9496	6.1664		Mag=22.4	NED
158.8	125.9413	6.1631		R=22.2, g=25.2, i=21.6, u=24.5, z=21.4	SDSS
158.8	125.9412	6.1631		Mag=25.0	NED
159.1	125.9242	6.1622		Mag=23.2	NED
159.2	125.9729	6.1913		R=23.0, g=25.2, i=21.5, u=24.5, z=20.3	SDSS
160.3	125.9590	6.2408		B2=20.4, R1=19.2, R2=18.9	USNO-B1
160.4	125.9325	6.1614		Mag=16.7	NED
160.7	125.9592	6.2408		Mag=21.7	NED
160.7	125.9591	6.2409		R=20.1, g=21.6, i=19.6, u=23.1, z=19.2	SDSS
161.1	125.9754	6.2122		Mag=20.9	NED
161.7	125.9175	6.2489		Mag=22.3	NED
161.9	125.9729	6.2231		Mag=16.1	NED
162.1	125.9050	6.1689		Mag=22.4	NED
162.1	125.9053	6.1690		R=21.7, g=23.5, i=21.2, u=23.3, z=20.9	SDSS
162.2	125.8978	6.1754		R=23.4, g=24.3, i=21.4, u=24.6, z=20.3	SDSS
163.2	125.8864	6.2153		R=21.6, g=23.5, i=20.5, u=23.4, z=19.8	SDSS
163.2	125.8862	6.2153		Mag=23.1	NED
163.4	125.9480	6.1639		R=21.1, g=22.3, i=20.7, u=22.0, z=20.0	SDSS
163.4	125.9479	6.1639		Mag=22.0	NED
163.5	125.9359	6.2512		R=21.9, g=23.9, i=21.0, u=25.7, z=21.2	SDSS
163.6	125.9358	6.2511		Mag=23.4	NED
167.1	125.8848	6.1996		R=22.9, g=24.4, i=21.5, u=24.5, z=21.9	SDSS
167.4	125.8895	6.2275		R=21.8, g=22.5, i=21.7, u=23.7, z=21.7	SDSS
167.4	125.8896	6.2275		Mag=22.3	NED
167.7	125.9033	6.2436		R=22.0, g=23.7, i=22.2, u=24.1, z=22.3	SDSS
167.7	125.9033	6.2436		Mag=23.3	NED
168.9	125.9579	6.1675		Mag=20.4	NED
169.3	125.9525	6.2478		Mag=21.4	NED
169.3	125.9525	6.2479		R=19.7, g=21.3, i=18.9, u=22.9, z=18.0	SDSS
169.3	125.8900	6.1825		Mag=23.9	NED
169.4	125.9467	6.2503		Mag=23.2	NED
169.5	125.9468	6.2504		R=21.3, g=23.1, i=20.0, u=23.9, z=19.4	SDSS
169.6	125.8942	6.2358		Mag=23.8	NED
169.9	125.9783	6.2044		Mag=23.0	NED
169.9	125.9784	6.2043		R=21.7, g=22.8, i=20.9, u=24.4, z=21.1	SDSS
170.4	125.9171	6.1608		Mag=18.4	NED
171.0	125.8947	6.1752		B2=19.4, I=18.0, R1=19.2, R2=19.2	USNO-B1
171.2	125.8946	6.1753		Mag=21.5	NED
171.2	125.9733	6.1842		Mag=24.0	NED
171.3	125.8975	6.1719		Mag=22.0	NED
172.6	125.9779	6.2171		R=21.7, g=22.7, i=20.2, u=24.4, z=19.5	SDSS
173.9	125.9014	6.2444		R=26.3, g=24.3, i=21.1, u=25.4, z=25.2	SDSS
174.4	125.9792	6.1978		Mag=22.0	NED
174.4	125.9790	6.1979		R=20.6, g=22.4, i=20.0, u=25.7, z=19.4	SDSS
174.7	125.9787	6.2164		Mag=22.0	NED
174.9	125.8932	6.2368		R=21.4, g=22.1, i=20.3, u=21.9, z=19.9	SDSS
174.9	125.9346	6.2544		Mag=15.0	NED
175.1	125.9633	6.2425		R=21.4, g=22.3, i=20.8, u=22.3, z=20.7	SDSS
175.6	125.9794	6.1979		I=17.7, R2=18.5	USNO-B1
175.8	125.9143	6.2519		R=22.3, g=23.3, i=21.3, u=24.4, z=21.1	SDSS
176.8	125.8835	6.2195		R=21.3, g=22.2, i=21.1, u=22.5, z=21.1	SDSS
176.8	125.8833	6.2194		Mag=22.1	NED
176.9	125.8988	6.1686		Mag=22.1	NED
177.0	125.9804	6.2036		R=23.3, g=24.5, i=21.7, u=23.7, z=20.4	SDSS
178.0	125.8829	6.1936		Mag=22.9	NED
178.2	125.9801	6.1980		B=21.6, R=18.1	APM-N
178.6	125.9800	6.1978		Mag=20.4	NED
178.8	125.8839	6.2226		R=20.7, g=21.9, i=20.1, u=23.8, z=19.4	SDSS
178.8	125.8837	6.2225		Mag=22.0	NED
178.9	125.9600	6.2464		Mag=23.9	NED
179.6	125.9385	6.1567		R=22.8, g=25.4, i=21.4, u=25.5, z=22.8	SDSS
179.9	125.9758	6.1833		Mag=22.0	NED
180.0	125.9758	6.1833		R=20.9, g=21.9, i=20.5, u=24.3, z=20.1	SDSS
180.6	125.9691	6.1731		R=21.6, g=22.9, i=20.6, u=24.9, z=19.7	SDSS
180.6	125.9692	6.1731		Mag=21.9	NED
180.8	125.9133	6.2531		Mag=23.5	NED
181.0	125.9162	6.1581		Mag=16.7	NED
181.0	125.9129	6.2528		Mag=16.7	NED
181.1	125.9117	6.2525		Mag=18.7	NED
181.4	125.9812	6.1989		R=22.2, g=22.4, i=22.1, u=22.7, z=21.9	SDSS
181.4	125.9812	6.1989		Mag=22.0	NED
182.0	125.9800	6.1931		Mag=22.0	NED
182.2	125.8954	6.1700		Mag=22.0	NED
182.2	125.8953	6.1699		R=21.2, g=22.9, i=20.2, u=25.8, z=19.9	SDSS
182.2	125.9808	6.2164		Mag=22.0	NED
182.3	125.8912	6.2378	0.000330	Mag=18.6	NED
182.6	125.9638	6.2450		Mag=18.6	NED
182.9	125.9645	6.2444		R=20.6, g=21.1, i=20.6, u=21.9, z=20.8	SDSS
183.5	125.8971	6.2444		Mag=14.5	NED
183.7	125.9304	6.1550		Mag=23.4	NED
184.1	125.9807	6.1928		R=21.4, g=21.6, i=21.2, u=25.1, z=21.3	SDSS
185.2	125.9812	6.2186		Mag=23.4	NED
185.6	125.8992	6.2468		R=21.9, g=21.9, i=20.4, u=22.3, z=20.9	SDSS
186.1	125.9823	6.2146		B1=20.1, I=18.1	USNO-B1
187.3	125.9817	6.2188		I=15.5, R1=16.8	USNO-B1
188.0	125.8783	6.2081		Mag=22.5	NED
188.0	125.8785	6.2080		R=21.8, g=22.7, i=21.4, u=23.2, z=22.2	SDSS
188.2	125.9137	6.1567		Mag=23.2	NED
188.8	125.9019	6.1623		R=22.4, g=23.6, i=21.2, u=25.5, z=20.7	SDSS
189.1	125.8912	6.1711		Mag=21.6	NED
189.6	125.9046	6.2517		Mag=21.6	NED
189.7	125.9767	6.1794		Mag=21.3	NED
189.9	125.8910	6.1713		B2=19.8, R1=19.0, R2=19.4	USNO-B1
189.9	125.9762	6.2336		Mag=24.1	NED
190.6	125.8783	6.1978		Mag=17.1	NED
191.3	125.9500	6.2558		Mag=21.9	NED
191.7	125.9829	6.2192		Mag=21.9	NED
192.4	125.9017	6.2508		Mag=21.5	NED
193.4	125.9368	6.2594		R=20.9, g=22.3, i=20.2, u=24.8, z=19.7	SDSS
193.4	125.9367	6.2594		Mag=22.4	NED
193.7	125.8808	6.1860		B1=20.1, B2=19.2	USNO-B1
194.2	125.9100	6.2558		Mag=22.4	NED
194.5	125.8775	6.2150		Mag=23.3	NED
194.5	125.8774	6.2151		R=21.5, g=23.2, i=20.5, u=23.2, z=20.0	SDSS
194.7	125.9304	6.2601		R=22.4, g=24.3, i=22.0, u=23.9, z=22.3	SDSS
194.9	125.8804	6.1860		B1=20.5, B2=19.0, I=18.2	USNO-B1
195.2	125.8875	6.2386		Mag=24.0	NED
195.7	125.8925	6.2447		Mag=20.0	NED
195.7	125.9309	6.1516		R=22.5, g=22.2, i=21.7, u=22.4, z=21.1	SDSS
196.6	125.8758	6.2058		Mag=21.4	NED
197.0	125.8949	6.2473		R=21.9, g=23.5, i=20.5, u=27.2, z=19.9	SDSS
198.3	125.9821	6.2274		B1=20.6, B2=19.1	USNO-B1
198.3	125.8983	6.2506		Mag=20.9	NED
198.3	125.8979	6.2503		Mag=21.3	NED
198.7	125.8792	6.1856		Mag=22.3	NED
198.7	125.9457	6.1528		R=24.7, g=24.5, i=24.8, u=24.0, z=19.7	SDSS
199.9	125.8792	6.2269		Mag=20.0	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