Swift Trigger: 1277277;

Presumed name: GRB 241228A

BAT	22^h 59^m 17.76^s, +18° 36′ 14.4″
position:	(344.824, +18.604 ± 180″)
XRT	22^h 59^m 12.42^s, +18° 36′ 36.2″
position:	(344.80173, 18.61005 ± 1.9″)
UVOT	No position available.
Galactic N_HI:	5.05×10²⁰ cm^-2
Galactic E(B-V):	0.088 mag

Best RA:	22^h 59^m 12.42^s	= 344.80173 d
Best Dec:	+18° 36′ 36.2″	= 18.61005 d

Gal Lat:	-36.78
Gal Long:	89.11

Sun angle:	78.20°, -4.5 hr East of Sun

Galaxies within 200 of XRT position

	RA*	Dec*	Redshift		Catalogue
20.0	344.7975	18.6142			NED
21.2	344.7957	18.6116		B=22.2, R=20.0	APM-N
31.4	344.8076	18.6033		B=22.1, R=20.0	APM-N
33.0	344.7953	18.6032		B=21.8, R=19.9	APM-N
37.4	344.8125	18.6119			NED
37.8	344.8117	18.6056			NED
38.0	344.8127	18.6117		B=20.0, R=18.1	APM-N
43.1	344.8073	18.5993		B=22.1, R=20.0	APM-N
43.4	344.8063	18.6214			NED
46.4	344.8131	18.6171		B=22.2, R=19.7	APM-N
47.0	344.8151	18.6134		B=21.8, R=20.0	APM-N
47.7	344.8068	18.5977		B=19.9, R=18.2	APM-N
47.8	344.8067	18.5978			NED
51.5	344.8108	18.6214			NED
52.4	344.7929	18.6222			NED
53.3	344.7908	18.6206		B1=21.2, R1=19.6	USNO-B1
55.8	344.7908	18.5983			NED
57.1	344.8033	18.5942			NED
57.5	344.7858	18.6153			NED
58.2	344.8028	18.5939		B=20.4, R=20.0	APM-N
58.6	344.7859	18.6165		B2=20.9, R1=19.5, R2=19.8	USNO-B1
59.1	344.7855	18.6158		B=21.6, R=19.7	APM-N
60.3	344.8157	18.5998		I=18.3, R2=20.1	USNO-B1
60.4	344.8129	18.6231			NED
60.5	344.8158	18.5997			NED
63.8	344.8179	18.6186			NED
64.4	344.8138	18.5961			NED
64.8	344.8042	18.6278			NED
65.3	344.7832	18.6145		B=22.2, R=19.8	APM-N
66.1	344.7973	18.6279		B=22.1, R=20.0	APM-N
67.8	344.7829	18.6039			NED
69.2	344.7833	18.6178			NED
70.2	344.8145	18.6253		B=22.2, R=19.6	APM-N
70.6	344.8179	18.6219			NED
72.4	344.7842	18.5986			NED
72.5	344.7805	18.6107		B=22.2, R=20.0	APM-N
72.6	344.7843	18.5985		B=21.6, R=18.7	APM-N
72.7	344.8138	18.5936			NED
73.9	344.8164	18.5950		B=22.0, R=20.0	APM-N
74.5	344.7858	18.6242			NED
74.6	344.7822	18.6008		B=21.1, R=20.0	APM-N
74.6	344.7858	18.6244			NED
76.1	344.8236	18.6059		I=18.6, R2=19.6	USNO-B1
76.3	344.8238	18.6061			NED
76.7	344.8229	18.6172			NED
79.4	344.8146	18.6283			NED
80.1	344.7967	18.6317			NED
80.6	344.8100	18.6311			NED
80.9	344.8063	18.6322			NED
82.8	344.7858	18.5928			NED
86.4	344.7801	18.5976		B=22.2, R=19.9	APM-N
87.4	344.8267	18.6056			NED
88.9	344.7854	18.5908		B=22.2, R=19.8	APM-N
89.2	344.8154	18.6311			NED
89.5	344.8096	18.6336			NED
89.9	344.7792	18.6228			NED
90.5	344.7912	18.5869			NED
90.8	344.7791	18.6234		B=21.4, R=20.0	APM-N
92.9	344.8271	18.6011			NED
94.4	344.8271	18.6206		B=21.1, R=20.0	APM-N
95.2	344.8225	18.5922			NED
95.7	344.8225	18.5922			NED
97.6	344.7837	18.6314			NED
100.0	344.7792	18.6278			NED
100.7	344.8258	18.6261			NED
100.8	344.8004	18.5819			NED
101.3	344.7847	18.5870		B=19.7, R=20.0	APM-N
101.4	344.7789	18.6281		B1=18.2, B2=17.8, I=17.4, R1=16.8, R2=17.4	USNO-B1
101.6	344.7789	18.6282		B=18.1, R=16.9	APM-N
102.7	344.7717	18.6075			NED
103.9	344.7714	18.6074		B=22.2, R=18.8	APM-N
103.9	344.7933	18.5822			NED
104.1	344.8136	18.5834		B=20.8, R=18.6	APM-N
104.4	344.8138	18.5833			NED
104.4	344.8152	18.5840		B2=21.5, R1=19.5	USNO-B1
104.5	344.8129	18.6369			NED
104.7	344.7708	18.6119			NED
104.8	344.8134	18.6370		B=20.9, R=18.4	APM-N
105.7	344.8130	18.6374		I=18.9, R1=19.2	USNO-B1
105.9	344.7717	18.6025			NED
105.9	344.7707	18.6118		B=17.0, R=15.4	APM-N
107.8	344.8330	18.6056		B=21.8, R=20.0	APM-N
109.4	344.7729	18.6239			NED
109.6	344.7731	18.6239		B1=18.4, B2=17.6, I=16.1, R1=16.1, R2=16.6	USNO-B1
109.9	344.8118	18.5810		B=20.1, R=17.7	APM-N
110.2	344.8117	18.5811			NED
114.0	344.8058	18.6414			NED
114.8	344.8333	18.6214			NED
115.0	344.8350	18.6133			NED
115.1	344.8060	18.6418		I=18.7, R2=20.0	USNO-B1
115.9	344.7771	18.6325			NED
116.3	344.8321	18.5958			NED
116.9	344.8061	18.6422		B2=20.6, I=18.4, R1=19.1, R2=20.0	USNO-B1
118.8	344.8119	18.5785		B1=18.5, B2=17.8, I=16.6, R1=16.6, R2=17.0	USNO-B1
118.9	344.8167	18.5803			NED
119.1	344.8117	18.5783			NED
120.5	344.7776	18.6345		B=22.0, R=20.0	APM-N
121.0	344.8367	18.6047			NED
122.2	344.8304	18.5897			NED
123.5	344.7725	18.6303			NED
130.0	344.7958	18.6457		B=22.2, R=19.4	APM-N
132.1	344.8317	18.5869			NED
133.0	344.7688	18.6300			NED
133.5	344.7696	18.5892			NED
134.8	344.8263	18.6392			NED
136.6	344.7725	18.5842			NED
136.9	344.7746	18.5819			NED
138.0	344.7808	18.6428			NED
140.1	344.7738	18.5815		B=22.2, R=19.9	APM-N
140.5	344.7800	18.6432		B2=21.7, I=18.6, R1=18.8, R2=19.9	USNO-B1
141.0	344.7846	18.6458			NED
141.4	344.7851	18.6460		B=20.0, R=17.0	APM-N
142.2	344.7878	18.6473		B=22.1, R=19.7	APM-N
142.6	344.8363	18.5881			NED
142.8	344.8433	18.6086			NED
143.0	344.8262	18.5778		B=20.3, R=17.8	APM-N
143.0	344.8263	18.5778			NED
143.2	344.7996	18.6497			NED
143.7	344.8437	18.6130		I=18.4, R1=19.8	USNO-B1
144.7	344.8225	18.6450			NED
146.5	344.8325	18.6386			NED
147.8	344.8171	18.5717			NED
148.0	344.8417	18.5942			NED
148.1	344.7613	18.5951		B=22.2, R=19.9	APM-N
149.7	344.8400	18.5900			NED
150.2	344.8454	18.6051		B=22.0, R=20.0	APM-N
150.7	344.7576	18.6078		B=20.3, R=18.0	APM-N
151.0	344.7575	18.6078			NED
152.1	344.8463	18.6110		B=22.1, R=20.0	APM-N
152.5	344.8383	18.6344			NED
152.6	344.8383	18.6345		B=21.4, R=19.1	APM-N
153.8	344.8433	18.6267			NED
154.6	344.7864	18.6505		B=22.1, R=20.0	APM-N
155.0	344.7796	18.6478			NED
155.5	344.7621	18.6317			NED
156.2	344.7644	18.6351		B=18.0, R=16.4	APM-N
156.3	344.7571	18.6003			NED
156.4	344.7642	18.6353			NED
157.1	344.7754	18.6458			NED
157.3	344.8203	18.6500		B=22.1, R=20.0	APM-N
157.7	344.8363	18.6392			NED
157.9	344.7704	18.6422			NED
158.3	344.8326	18.5772		B=22.1, R=20.0	APM-N
158.8	344.7813	18.6497			NED
159.6	344.7729	18.6449		B=22.1, R=20.0	APM-N
160.0	344.7605	18.5888		B=22.2, R=19.7	APM-N
160.2	344.7551	18.6049		B2=21.3, R2=20.1	USNO-B1
160.4	344.7707	18.5766		B2=21.0, R1=19.7	USNO-B1
160.7	344.8171	18.6522			NED
161.1	344.8461	18.5947		B2=20.8, R2=20.0	USNO-B1
161.2	344.7613	18.5869			NED
161.3	344.7638	18.5833			NED
161.6	344.8487	18.6036			NED
163.0	344.7802	18.5696		B=22.2, R=19.7	APM-N
163.1	344.8458	18.6272			NED
163.5	344.8121	18.5656			NED
163.6	344.7719	18.5745		B=22.1, R=20.0	APM-N
163.7	344.7736	18.6469		B=22.2, R=19.9	APM-N
164.3	344.7829	18.6519			NED
165.7	344.8221	18.6519			NED
166.5	344.7597	18.6335		B=21.7, R=20.0	APM-N
166.7	344.7546	18.6225			NED
167.5	344.8057	18.6564		B2=21.2, R2=20.1	USNO-B1
167.6	344.7558	18.6272			NED
167.7	344.8218	18.6526		B2=21.4, I=18.8, R2=20.1	USNO-B1
167.8	344.8083	18.6561			NED
167.8	344.7929	18.6558			NED
170.0	344.8222	18.5670		B=22.2, R=19.7	APM-N
170.9	344.8133	18.6561			NED
171.5	344.8458	18.5878			NED
171.6	344.8458	18.5872		B2=21.6, R2=19.9	USNO-B1
172.9	344.7567	18.6319			NED
173.7	344.7899	18.5631		B=19.6, R=18.0	APM-N
174.0	344.7552	18.5903		B=22.2, R=19.8	APM-N
174.2	344.7962	18.6581			NED
174.4	344.7513	18.6186			NED
175.0	344.8002	18.5615		B=21.8, R=20.0	APM-N
175.4	344.8530	18.6065		B=21.9, R=20.0	APM-N
175.7	344.7663	18.5747		B=22.2, R=19.9	APM-N
175.7	344.8300	18.6508		B=22.0, R=20.0	APM-N
175.8	344.7961	18.6586		B2=21.0, I=18.9, R2=20.2	USNO-B1
176.0	344.7879	18.5629		B2=21.8, I=18.9, R1=19.8	USNO-B1
177.7	344.7875	18.5625			NED
180.0	344.8182	18.5625		B=19.9, R=17.0	APM-N
180.2	344.7513	18.5944			NED
180.2	344.8183	18.5625	0.231131		NED
180.2	344.7729	18.6519			NED
180.9	344.7795	18.5644		B=22.1, R=20.0	APM-N
181.4	344.7743	18.5669		B1=19.2, B2=18.2, I=16.8, R1=16.6, R2=17.0	USNO-B1
181.7	344.7742	18.5667			NED
181.8	344.8408	18.5758			NED
181.9	344.7571	18.5825			NED
182.5	344.7904	18.5606			NED
182.6	344.8504	18.6308			NED
182.9	344.7900	18.5605		B2=21.4, I=18.3, R1=19.4, R2=19.9	USNO-B1
183.4	344.8121	18.5600			NED
183.6	344.8298	18.5665		R1=19.6, R2=20.1	USNO-B1
184.1	344.7926	18.5596		B=21.9, R=20.0	APM-N
184.2	344.8464	18.5813		B=19.6, R=18.2	APM-N
184.5	344.8197	18.6584		B=21.6, R=20.0	APM-N
184.6	344.8462	18.5811			NED
185.0	344.8325	18.5678			NED
185.5	344.8550	18.6192			NED
185.6	344.7846	18.5611			NED
185.9	344.7767	18.5642			NED
186.1	344.8530	18.6276		B=21.4, R=20.0	APM-N
187.4	344.7600	18.5761			NED
187.6	344.7500	18.6281			NED
187.8	344.7646	18.6486			NED
188.6	344.7596	18.5758			NED
188.8	344.7571	18.5792			NED
189.4	344.7758	18.5636			NED
189.7	344.7759	18.5634		B=19.3, R=18.2	APM-N
190.2	344.7769	18.5627		B1=20.2, B2=21.0, R2=20.2	USNO-B1
190.4	344.7616	18.6468		B=22.0, R=20.0	APM-N
191.1	344.8575	18.6125			NED
192.5	344.8147	18.5580		I=18.9, R2=19.6	USNO-B1
192.5	344.7467	18.6225			NED
193.1	344.8521	18.6342			NED
193.2	344.8490	18.5805		B=22.1, R=20.0	APM-N
193.7	344.8517	18.5844			NED
193.9	344.8258	18.6589			NED
194.6	344.8467	18.6433			NED
195.2	344.8557	18.5920		B=21.2, R=19.5	APM-N
195.4	344.8479	18.5781			NED
195.9	344.8275	18.5614			NED
196.6	344.8133	18.6636			NED
196.7	344.7875	18.6631			NED
196.9	344.7475	18.5914			NED
197.5	344.7692	18.5647			NED
197.8	344.8579	18.5972			NED
197.9	344.8458	18.5742			NED
198.4	344.8141	18.5562		R1=19.0, R2=18.7	USNO-B1
198.6	344.8492	18.6420		B1=20.8, B2=20.8, I=18.7, R2=20.1	USNO-B1
198.7	344.8142	18.5561			NED
199.6	344.8575	18.6272			NED
199.8	344.7817	18.6622			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