SOHO/LASCO CME Catalog

CME heights (with respect to the disk center) are measured at the fastest segment of the leading edge.

PA= Position Angle measured from Solar North in degrees (counter-clockwise)

Halo CMEs are indicated in the "Central PA" column. The letters ("S", "BA", "OA") in the brackets show type of halo CMEs. See examples.

Click on date to view Java script movie of the CME.

Click on time to see height-time measurements as a text file.

Click on speed to view height-time plots of the CME.

Beware of data gaps. Check for LASCO/C2 data gaps here.

A complete description of the catalog

Click here to search the entire catalog.

First C2 Appearance
Date Time [UT] Central
PA
[deg] Angular
Width [deg] Linear
Speed [km/s] 2nd-order Speed at final height [km/s] 2nd-order Speed at 20 Rs [km/s] Accel
[m/s²] Mass
[gram] Kinetic
Energy
[erg] MPA [deg] Movies, plots, & links Remarks

2008/09/01 05:30:06 113 8 142 171 240 2.0^*1 ---- ---- 111 C2 C3 195 PHTX DST Java Movie Poor Event

2008/09/02 08:06:04 279 12 306 397 940 34.5^*1 ---- ---- 279 C2 C3 195 PHTX DST Java Movie Poor Event; Only C2

2008/09/02 10:54:04 52 14 100 102 119 0.2^*1 ---- ---- 55 C2 C3 195 PHTX DST Java Movie Very Poor Event

2008/09/02 18:54:04 109 8 108 41 0 -18.4^*1 ---- ---- 106 C2 C3 195 PHTX DST Java Movie Very Poor Event; Only C2

2008/09/02 22:30:04 107 14 230 227 176 -1.0^*1 ---- ---- 106 C2 C3 195 PHTX DST Java Movie Very Poor Event; Only C2

2008/09/03 23:06:04 290 12 249 335 817 26.5^*1 ---- ---- 289 C2 C3 195 PHTX DST Java Movie Very Poor Event; Only C2

2008/09/04 18:54:04 198 6 346 --- --- --- ---- ---- 201 C2 C3 195 PHTX DST Java Movie only two points; Very Poor Event; Only 2 points; Only C2

2008/09/07 04:30:04 61 7 235 324 431 7.5^*1 ---- ---- 68 C2 C3 195 PHTX DST Java Movie Poor Event

2008/09/07 20:06:05 237 13 205 281 360 5.3^*1 ---- ---- 247 C2 C3 195 PHTX DST Java Movie Very Poor Event

2008/09/08 00:30:04 245 8 197 184 140 -1.1^*1 ---- ---- 241 C2 C3 195 PHTX DST Java Movie Very Poor Event

2008/09/08 01:31:38 84 68 115 164 272 2.9^*1 7.9e+14 5.2e+28 72 C2 C3 195 PHTX DST Java Movie Poor Event

2008/09/09 00:30:04 240 12 236 214 140 -2.4^*1 ---- ---- 241 C2 C3 195 PHTX DST Java Movie Very Poor Event

2008/09/09 01:31:39 270 9 387 379 217 -4.6^*1 ---- ---- 269 C2 C3 195 PHTX DST Java Movie Very Poor Event; Only C2

2008/09/09 03:30:04 236 11 162 256 432 7.7^*1 ---- ---- 239 C2 C3 195 PHTX DST Java Movie Very Poor Event

2008/09/09 10:54:28 242 10 290 314 348 2.2^*1 ---- ---- 243 C2 C3 195 PHTX DST Java Movie Very Poor Event

2008/09/09 11:30:04 241 7 146 136 0 -1.9^*1 ---- ---- 241 C2 C3 195 PHTX DST Java Movie Very Poor Event; Only C2

2008/09/09 11:54:04 145 6 130 --- --- --- ---- ---- 143 C2 C3 195 PHTX DST Java Movie only two points; Very Poor Event; Only 2 points; Only C2

2008/09/10 18:30:04 75 18 146 124 0 -5.0^*1 ---- ---- 78 C2 C3 195 PHTX DST Java Movie Poor Event; Only C2

2008/09/11 00:30:04 247 7 194 246 348 5.0^*1 ---- ---- 234 C2 C3 195 PHTX DST Java Movie Very Poor Event

2008/09/11 17:30:04 247 7 158 184 289 3.0^*1 ---- ---- 249 C2 C3 195 PHTX DST Java Movie Very Poor Event

2008/09/12 10:30:14 89 49 91 179 198 1.7^*1 2.1e+15 8.7e+28 92 C2 C3 195 PHTX DST Java Movie

2008/09/13 11:30:04 101 6 150 164 215 1.1^*1 ---- ---- 101 C2 C3 195 PHTX DST Java Movie

2008/09/14 16:30:04 252 11 212 208 98 -1.6^*1 ---- ---- 207 C2 C3 195 PHTX DST Java Movie Very Poor Event; Only C2

2008/09/14 22:30:04 356 8 376 627 1769 134.4^*1 ---- ---- 356 C2 C3 195 PHTX DST Java Movie Very Poor Event; Only 3 points; Only C2

2008/09/14 22:30:04 75 46 110 179 249 2.5^*1 1.3e+14 7.9e+27 74 C2 C3 195 PHTX DST Java Movie Poor Event

2008/09/15 10:30:16 86 9 211 207 161 -0.8^*1 ---- ---- 89 C2 C3 195 PHTX DST Java Movie Very Poor Event; Only C2

2008/09/16 06:30:04 243 9 209 225 332 3.0^*1 ---- ---- 249 C2 C3 195 PHTX DST Java Movie Very Poor Event

2008/09/16 11:54:17 5 4 531 608 1086 41.7^*1 ---- ---- 6 C2 C3 195 PHTX DST Java Movie Very Poor Event; Only 3 points; Only C2

2008/09/16 17:06:04 247 19 230 244 293 1.7^*1 ---- ---- 252 C2 C3 195 PHTX DST Java Movie Very Poor Event

2008/09/16 20:30:04 278 34 83 95 184 1.2^*1 2.4e+13 8.2e+26 279 C2 C3 195 PHTX DST Java Movie Very Poor Event; Only C2

2008/09/19 01:27:13 337 4 407 367 0 -23.2^*1 ---- ---- 333 C2 C3 195 PHTX DST Java Movie Very Poor Event; Only C2

2008/09/19 10:26:04 53 24 200 189 171 -0.6^*1 2.0e+14 4.0e+28 53 C2 C3 195 PHTX DST Java Movie Poor Event

2008/09/19 21:26:07 55 14 201 264 625 15.5^*1 ---- ---- 56 C2 C3 195 PHTX DST Java Movie Very Poor Event; Only C2

2008/09/20 03:34:12 59 8 247 343 759 23.2^*1 ---- ---- 62 C2 C3 195 PHTX DST Java Movie Very Poor Event; Only C2

2008/09/20 09:06:04 157 6 505 --- --- --- ---- ---- 153 C2 C3 195 PHTX DST Java Movie Very Poor Event; Only 2 points; Only C2

2008/09/21 12:06:04 303 17 262 310 335 2.8^*1 ---- ---- 301 C2 C3 195 PHTX DST Java Movie Poor Event

2008/09/21 15:50:04 125 3 214 257 787 24.8^*1 ---- ---- 121 C2 C3 195 PHTX DST Java Movie Very Poor Event; Only C2

2008/09/22 15:50:04 72 9 151 153 193 0.6^*1 ---- ---- 77 C2 C3 195 PHTX DST Java Movie Poor Event; Only C2

2008/09/22 18:34:27 343 9 239 213 0 -11.0^*1 ---- ---- 338 C2 C3 195 PHTX DST Java Movie Very Poor Event; Only C2

2008/09/23 02:50:04 112 9 147 290 994 47.7^*1 ---- ---- 110 C2 C3 195 PHTX DST Java Movie Very Poor Event; Only C2

2008/09/24 07:27:12 118 10 206 249 537 12.9^*1 ---- ---- 115 C2 C3 195 PHTX DST Java Movie Very Poor Event

2008/09/24 23:06:04 114 6 213 285 331 4.1^*1 ---- ---- 114 C2 C3 195 PHTX DST Java Movie Very Poor Event

2008/09/25 13:27:12 358 4 272 362 1320 75.3^*1 ---- ---- 355 C2 C3 195 PHTX DST Java Movie Very Poor Event; Only 3 points; Only C2

2008/09/25 20:26:05 72 6 258 199 0 -33.7^*1 ---- ---- 74 C2 C3 195 PHTX DST Java Movie Very Poor Event; Only C2

2008/09/27 16:26:04 82 18 118 162 936 36.3^*1 ---- ---- 82 C2 C3 195 PHTX DST Java Movie Very Poor Event; Only 3 points; Only C2

2008/09/27 18:06:04 300 6 303 287 0 -4.8^*1 ---- ---- 291 C2 C3 195 PHTX DST Java Movie Poor Event; Only C2

2008/09/28 00:26:04 12 4 369 525 1224 62.6^*1 ---- ---- 13 C2 C3 195 PHTX DST Java Movie Very Poor Event; Only C2

2008/09/28 13:27:11 109 19 218 257 391 5.1^*1 ---- ---- 105 C2 C3 195 PHTX DST Java Movie Very Poor Event

2008/09/28 22:26:04 273 35 379 407 466 4.2^*1 4.9e+13 3.5e+28 276 C2 C3 195 PHTX DST Java Movie Poor Event

2008/09/29 12:50:04 355 6 458 433 120 -9.6^*1 ---- ---- 353 C2 C3 195 PHTX DST Java Movie

2008/09/29 13:27:13 205 2 319 452 1652 110.9^*1 ---- ---- 207 C2 C3 195 PHTX DST Java Movie Very Poor Event; Only 3 points; Only C2

2008/09/29 13:27:13 86 19 153 137 0 -2.3^*1 ---- ---- 83 C2 C3 195 PHTX DST Java Movie Very Poor Event

2008/09/29 21:26:07 183 5 308 491 1910 148.4^*1 ---- ---- 183 C2 C3 195 PHTX DST Java Movie Very Poor Event; Only 3 points; Only C2

2008/09/29 21:50:04 284 48 177 143 0 -4.1^*1 3.6e+14 5.6e+28 274 C2 C3 195 PHTX DST Java Movie Poor Event

2008/09/30 03:50:04 181 7 540 446 0 -88.6^*1 ---- ---- 184 C2 C3 195 PHTX DST Java Movie Very Poor Event; Only 3 points; Only C2

2008/09/30 08:06:04 25 5 393 266 0 -69.3^*1 ---- ---- 28 C2 C3 195 PHTX DST Java Movie Very Poor Event; Only C2

First C2 Appearance Date Time [UT]	Central PA [deg]	Angular Width [deg]	Linear Speed [km/s]	2nd-order Speed at final height [km/s]	2nd-order Speed at 20 Rs [km/s]	Accel [m/s²]	Mass [gram]	Kinetic Energy [erg]	MPA [deg]	Movies, plots, & links	Remarks
2008/09/01	05:30:06	113	8	142	171	240	2.0^*1	----	----	111	C2 C3 195 PHTX DST Java Movie	Poor Event
2008/09/02	08:06:04	279	12	306	397	940	34.5^*1	----	----	279	C2 C3 195 PHTX DST Java Movie	Poor Event; Only C2
2008/09/02	10:54:04	52	14	100	102	119	0.2^*1	----	----	55	C2 C3 195 PHTX DST Java Movie	Very Poor Event
2008/09/02	18:54:04	109	8	108	41	0	-18.4^*1	----	----	106	C2 C3 195 PHTX DST Java Movie	Very Poor Event; Only C2
2008/09/02	22:30:04	107	14	230	227	176	-1.0^*1	----	----	106	C2 C3 195 PHTX DST Java Movie	Very Poor Event; Only C2
2008/09/03	23:06:04	290	12	249	335	817	26.5^*1	----	----	289	C2 C3 195 PHTX DST Java Movie	Very Poor Event; Only C2
2008/09/04	18:54:04	198	6	346	---	---	---	----	----	201	C2 C3 195 PHTX DST Java Movie	only two points; Very Poor Event; Only 2 points; Only C2
2008/09/07	04:30:04	61	7	235	324	431	7.5^*1	----	----	68	C2 C3 195 PHTX DST Java Movie	Poor Event
2008/09/07	20:06:05	237	13	205	281	360	5.3^*1	----	----	247	C2 C3 195 PHTX DST Java Movie	Very Poor Event
2008/09/08	00:30:04	245	8	197	184	140	-1.1^*1	----	----	241	C2 C3 195 PHTX DST Java Movie	Very Poor Event
2008/09/08	01:31:38	84	68	115	164	272	2.9^*1	7.9e+14	5.2e+28	72	C2 C3 195 PHTX DST Java Movie	Poor Event
2008/09/09	00:30:04	240	12	236	214	140	-2.4^*1	----	----	241	C2 C3 195 PHTX DST Java Movie	Very Poor Event
2008/09/09	01:31:39	270	9	387	379	217	-4.6^*1	----	----	269	C2 C3 195 PHTX DST Java Movie	Very Poor Event; Only C2
2008/09/09	03:30:04	236	11	162	256	432	7.7^*1	----	----	239	C2 C3 195 PHTX DST Java Movie	Very Poor Event
2008/09/09	10:54:28	242	10	290	314	348	2.2^*1	----	----	243	C2 C3 195 PHTX DST Java Movie	Very Poor Event
2008/09/09	11:30:04	241	7	146	136	0	-1.9^*1	----	----	241	C2 C3 195 PHTX DST Java Movie	Very Poor Event; Only C2
2008/09/09	11:54:04	145	6	130	---	---	---	----	----	143	C2 C3 195 PHTX DST Java Movie	only two points; Very Poor Event; Only 2 points; Only C2
2008/09/10	18:30:04	75	18	146	124	0	-5.0^*1	----	----	78	C2 C3 195 PHTX DST Java Movie	Poor Event; Only C2
2008/09/11	00:30:04	247	7	194	246	348	5.0^*1	----	----	234	C2 C3 195 PHTX DST Java Movie	Very Poor Event
2008/09/11	17:30:04	247	7	158	184	289	3.0^*1	----	----	249	C2 C3 195 PHTX DST Java Movie	Very Poor Event
2008/09/12	10:30:14	89	49	91	179	198	1.7^*1	2.1e+15	8.7e+28	92	C2 C3 195 PHTX DST Java Movie
2008/09/13	11:30:04	101	6	150	164	215	1.1^*1	----	----	101	C2 C3 195 PHTX DST Java Movie
2008/09/14	16:30:04	252	11	212	208	98	-1.6^*1	----	----	207	C2 C3 195 PHTX DST Java Movie	Very Poor Event; Only C2
2008/09/14	22:30:04	356	8	376	627	1769	134.4^*1	----	----	356	C2 C3 195 PHTX DST Java Movie	Very Poor Event; Only 3 points; Only C2
2008/09/14	22:30:04	75	46	110	179	249	2.5^*1	1.3e+14	7.9e+27	74	C2 C3 195 PHTX DST Java Movie	Poor Event
2008/09/15	10:30:16	86	9	211	207	161	-0.8^*1	----	----	89	C2 C3 195 PHTX DST Java Movie	Very Poor Event; Only C2
2008/09/16	06:30:04	243	9	209	225	332	3.0^*1	----	----	249	C2 C3 195 PHTX DST Java Movie	Very Poor Event
2008/09/16	11:54:17	5	4	531	608	1086	41.7^*1	----	----	6	C2 C3 195 PHTX DST Java Movie	Very Poor Event; Only 3 points; Only C2
2008/09/16	17:06:04	247	19	230	244	293	1.7^*1	----	----	252	C2 C3 195 PHTX DST Java Movie	Very Poor Event
2008/09/16	20:30:04	278	34	83	95	184	1.2^*1	2.4e+13	8.2e+26	279	C2 C3 195 PHTX DST Java Movie	Very Poor Event; Only C2
2008/09/19	01:27:13	337	4	407	367	0	-23.2^*1	----	----	333	C2 C3 195 PHTX DST Java Movie	Very Poor Event; Only C2
2008/09/19	10:26:04	53	24	200	189	171	-0.6^*1	2.0e+14	4.0e+28	53	C2 C3 195 PHTX DST Java Movie	Poor Event
2008/09/19	21:26:07	55	14	201	264	625	15.5^*1	----	----	56	C2 C3 195 PHTX DST Java Movie	Very Poor Event; Only C2
2008/09/20	03:34:12	59	8	247	343	759	23.2^*1	----	----	62	C2 C3 195 PHTX DST Java Movie	Very Poor Event; Only C2
2008/09/20	09:06:04	157	6	505	---	---	---	----	----	153	C2 C3 195 PHTX DST Java Movie	Very Poor Event; Only 2 points; Only C2
2008/09/21	12:06:04	303	17	262	310	335	2.8^*1	----	----	301	C2 C3 195 PHTX DST Java Movie	Poor Event
2008/09/21	15:50:04	125	3	214	257	787	24.8^*1	----	----	121	C2 C3 195 PHTX DST Java Movie	Very Poor Event; Only C2
2008/09/22	15:50:04	72	9	151	153	193	0.6^*1	----	----	77	C2 C3 195 PHTX DST Java Movie	Poor Event; Only C2
2008/09/22	18:34:27	343	9	239	213	0	-11.0^*1	----	----	338	C2 C3 195 PHTX DST Java Movie	Very Poor Event; Only C2
2008/09/23	02:50:04	112	9	147	290	994	47.7^*1	----	----	110	C2 C3 195 PHTX DST Java Movie	Very Poor Event; Only C2
2008/09/24	07:27:12	118	10	206	249	537	12.9^*1	----	----	115	C2 C3 195 PHTX DST Java Movie	Very Poor Event
2008/09/24	23:06:04	114	6	213	285	331	4.1^*1	----	----	114	C2 C3 195 PHTX DST Java Movie	Very Poor Event
2008/09/25	13:27:12	358	4	272	362	1320	75.3^*1	----	----	355	C2 C3 195 PHTX DST Java Movie	Very Poor Event; Only 3 points; Only C2
2008/09/25	20:26:05	72	6	258	199	0	-33.7^*1	----	----	74	C2 C3 195 PHTX DST Java Movie	Very Poor Event; Only C2
2008/09/27	16:26:04	82	18	118	162	936	36.3^*1	----	----	82	C2 C3 195 PHTX DST Java Movie	Very Poor Event; Only 3 points; Only C2
2008/09/27	18:06:04	300	6	303	287	0	-4.8^*1	----	----	291	C2 C3 195 PHTX DST Java Movie	Poor Event; Only C2
2008/09/28	00:26:04	12	4	369	525	1224	62.6^*1	----	----	13	C2 C3 195 PHTX DST Java Movie	Very Poor Event; Only C2
2008/09/28	13:27:11	109	19	218	257	391	5.1^*1	----	----	105	C2 C3 195 PHTX DST Java Movie	Very Poor Event
2008/09/28	22:26:04	273	35	379	407	466	4.2^*1	4.9e+13	3.5e+28	276	C2 C3 195 PHTX DST Java Movie	Poor Event
2008/09/29	12:50:04	355	6	458	433	120	-9.6^*1	----	----	353	C2 C3 195 PHTX DST Java Movie
2008/09/29	13:27:13	205	2	319	452	1652	110.9^*1	----	----	207	C2 C3 195 PHTX DST Java Movie	Very Poor Event; Only 3 points; Only C2
2008/09/29	13:27:13	86	19	153	137	0	-2.3^*1	----	----	83	C2 C3 195 PHTX DST Java Movie	Very Poor Event
2008/09/29	21:26:07	183	5	308	491	1910	148.4^*1	----	----	183	C2 C3 195 PHTX DST Java Movie	Very Poor Event; Only 3 points; Only C2
2008/09/29	21:50:04	284	48	177	143	0	-4.1^*1	3.6e+14	5.6e+28	274	C2 C3 195 PHTX DST Java Movie	Poor Event
2008/09/30	03:50:04	181	7	540	446	0	-88.6^*1	----	----	184	C2 C3 195 PHTX DST Java Movie	Very Poor Event; Only 3 points; Only C2
2008/09/30	08:06:04	25	5	393	266	0	-69.3^*1	----	----	28	C2 C3 195 PHTX DST Java Movie	Very Poor Event; Only C2

*1 Acceleration is uncertain due to either poor height measurement or a small number of height-time measurements (See Section 3.4 of Yashiro et al. 2004 for details).
*2 Mass and Kinetic Energy are uncertain due to poor mass estimate. Mass measurement assumes that the CME material is in the sky-plane. Kinetic Energy is obtained from the mass and linear speed (see Vourlidas et al. 2000 for details).