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

1999/02/05 16:35:44 203 45 621 523 566 -8.0 7.0e+14 1.4e+30 202 C2 C3 SXT PHTX DST Java Movie

1999/02/05 20:27:39 231 48 660 912 809 20.2 7.3e+13 1.6e+29 236 C2 C3 SXT PHTX DST Java Movie

1999/02/06 19:34:55 220 59 611 796 919 27.3 1.4e+14 2.6e+29 217 C2 C3 195 SXT PHTX DST Java Movie

1999/02/06 21:36:19 242 107 136 160 268 2.4^*1 1.5e+15 1.4e+29 263 C2 C3 195 SXT PHTX DST Java Movie Poor Event

1999/02/07 17:57:16 308 140 391 647 612 14.3 2.3e+15^*2 1.8e+30^*2 300 C2 C3 195 SXT PHTX DST Java Movie Partial Halo

1999/02/08 05:57:18 92 50 379 360 358 -1.3 ---- ---- 94 C2 C3 SXT PHTX DST Java Movie

1999/02/08 07:30:05 107 132 869 689 760 -22.7 ---- ---- 131 C2 C3 SXT PHTX DST Java Movie Partial Halo

1999/02/09 01:30:05 47 60 853 1089 1366 61.4^*1 ---- ---- 49 C2 C3 SXT PHTX DST Java Movie UVCS Poor Event

1999/02/09 05:33:01 238 132 808 734 0 -34.7^*1 1.2e+15^*2 4.0e+30^*2 255 C2 C3 SXT PHTX DST Java Movie Partial Halo

1999/02/10 04:32:29 269 55 376 331 221 -5.3^*1 1.5e+14 1.0e+29 277 C2 C3 SXT PHTX DST Java Movie Poor Event

1999/02/10 06:32:30 29 15 663 638 641 -2.9^*1 ---- ---- 23 C2 C3 SXT PHTX DST Java Movie

1999/02/10 13:56:31 181 62 171 147 0 -4.3^*1 1.9e+14 2.7e+28 181 C2 C3 SXT PHTX DST Java Movie Only C2

1999/02/10 14:57:18 125 90 849 1028 961 22.0 6.6e+14 2.4e+30 134 C2 C3 SXT PHTX DST Java Movie

1999/02/10 23:57:26 98 37 312 305 102 -3.7^*1 8.7e+12^*2 4.2e+27^*2 96 C2 C3 SXT PHTX DST Java Movie Only 3 points; Only C2

1999/02/12 03:57:16 109 123 730 778 775 5.6 9.2e+14^*2 2.4e+30^*2 83 SXT PHTX DST Java Movie Partial Halo

1999/02/13 14:56:31 97 94 874 672 0 -203.9^*1 2.7e+14^*2 1.0e+30^*2 103 SXT PHTX DST Java Movie Only 3 points; Only C2

1999/02/13 18:31:17 89 115 694 779 781 9.4 2.4e+15 5.7e+30 73 SXT PHTX DST Java Movie

1999/02/14 00:56:31 87 20 296 248 0 -11.8^*1 ---- ---- 107 C2 C3 SXT PHTX DST Java Movie Newly inserted on 2006/11/06; Very Poor Event

1999/02/14 03:55:17 88 19 342 295 267 -3.3^*1 ---- ---- 128 C2 C3 SXT PHTX DST Java Movie Newly inserted on 2006/11/06; Very Poor Event

1999/02/14 07:30:05 300 28 690 601 0 -29.0 3.3e+13 7.8e+28 296 C2 C3 SXT PHTX DST Java Movie

1999/02/14 11:08:09 62 147 758 909 1692 104.0^*1 ---- ---- 54 C2 C3 SXT PHTX DST Java Movie Newly inserted on 2005/09/21; Poor Event; Only 3 points; Only C2; Partial Halo

1999/02/20 05:30:05 265 55 293 265 164 -3.2^*1 1.8e+14 7.8e+28 266 C2 C3 195 SXT PHTX DST Java Movie

1999/02/20 08:30:05 305 8 221 231 253 0.9^*1 ---- ---- 302 C2 C3 195 SXT PHTX DST Java Movie

1999/02/20 10:30:05 272 32 160 182 378 5.2^*1 2.6e+14 3.3e+28 267 C2 C3 195 SXT PHTX DST Java Movie Only C2

1999/02/20 15:54:05 268 49 258 253 242 -0.4 2.8e+14 9.5e+28 265 C2 C3 195 SXT PHTX DST Java Movie

1999/02/20 15:54:05 46 69 838 780 745 -10.9^*1 2.8e+14 1.0e+30 44 C2 C3 195 SXT PHTX DST Java Movie

1999/02/20 21:42:05 187 13 627 666 788 14.3^*1 ---- ---- 187 C2 C3 195 SXT PHTX DST Java Movie Only 3 points; Only C3

1999/02/21 09:54:05 66 16 437 409 345 -4.2 ---- ---- 68 C2 C3 SXT PHTX DST Java Movie

1999/02/21 10:30:05 273 65 350 340 299 -1.7 3.9e+14 2.4e+29 267 C2 C3 SXT PHTX DST Java Movie

1999/02/21 16:54:05 37 42 ---- --- --- --- 6.0e+12^*2 3.0e+22^*2 35 C2 C3 SXT PHTX DST Java Movie Very Poor Event; Only C2; Unable to measure

1999/02/22 06:30:05 245 13 509 494 458 -2.7 ---- ---- 240 C2 C3 SXT PHTX DST Java Movie

1999/02/22 23:26:05 169 134 312 502 497 11.2^*1 1.2e+15^*2 6.1e+29^*2 197 C2 C3 SXT PHTX DST Java Movie Partial Halo

1999/02/23 10:54:06 255 45 519 471 399 -7.7 1.0e+14 1.4e+29 242 C2 C3 SXT PHTX DST Java Movie

1999/02/24 01:54:05 247 102 422 243 0 -22.0^*1 2.0e+14 1.8e+29 267 C2 C3 SXT PHTX DST Java Movie

1999/02/24 10:54:05 196 80 164 255 359 6.7^*1 5.5e+14 7.4e+28 208 C2 C3 SXT PHTX DST Java Movie Poor Event; Only C3

1999/02/24 18:26:05 350 115 315 567 546 12.6 2.1e+15 1.0e+30 16 C2 C3 SXT PHTX DST Java Movie

1999/02/25 03:26:05 303 60 766 1024 976 29.3 5.3e+14 1.5e+30 288 C2 C3 SXT PHTX DST Java Movie

1999/02/25 06:54:05 132 26 727 866 1066 33.7 1.3e+14 3.5e+29 138 C2 C3 SXT PHTX DST Java Movie

1999/02/25 13:54:05 215 106 378 402 436 3.3^*1 ---- ---- 220 C2 C3 SXT PHTX DST Java Movie Only C3

1999/02/25 17:54:06 89 73 432 424 416 -0.8 1.9e+14 1.8e+29 94 C2 C3 SXT PHTX DST Java Movie

1999/02/26 02:54:05 111 18 322 303 263 -1.9 ---- ---- 115 C2 C3 SXT PHTX DST Java Movie

1999/02/26 04:54:05 225 76 711 644 590 -11.3 1.9e+13 4.9e+28 229 C2 C3 SXT PHTX DST Java Movie

1999/02/27 01:54:05 129 12 527 486 404 -6.7^*1 ---- ---- 128 C2 C3 SXT PHTX DST Java Movie

1999/02/27 06:26:05 117 17 446 384 83 -10.6^*1 ---- ---- 115 C2 C3 SXT PHTX DST Java Movie

1999/02/27 23:26:05 302 23 662 557 0 -26.8 5.9e+13 1.3e+29 290 C2 C3 SXT PHTX DST Java Movie

1999/02/28 17:54:05 301 64 329 364 460 5.2 ---- ---- 297 C2 C3 SXT PHTX DST Java Movie

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
1999/02/05	16:35:44	203	45	621	523	566	-8.0	7.0e+14	1.4e+30	202	C2 C3 SXT PHTX DST Java Movie
1999/02/05	20:27:39	231	48	660	912	809	20.2	7.3e+13	1.6e+29	236	C2 C3 SXT PHTX DST Java Movie
1999/02/06	19:34:55	220	59	611	796	919	27.3	1.4e+14	2.6e+29	217	C2 C3 195 SXT PHTX DST Java Movie
1999/02/06	21:36:19	242	107	136	160	268	2.4^*1	1.5e+15	1.4e+29	263	C2 C3 195 SXT PHTX DST Java Movie	Poor Event
1999/02/07	17:57:16	308	140	391	647	612	14.3	2.3e+15^*2	1.8e+30^*2	300	C2 C3 195 SXT PHTX DST Java Movie	Partial Halo
1999/02/08	05:57:18	92	50	379	360	358	-1.3	----	----	94	C2 C3 SXT PHTX DST Java Movie
1999/02/08	07:30:05	107	132	869	689	760	-22.7	----	----	131	C2 C3 SXT PHTX DST Java Movie	Partial Halo
1999/02/09	01:30:05	47	60	853	1089	1366	61.4^*1	----	----	49	C2 C3 SXT PHTX DST Java Movie UVCS	Poor Event
1999/02/09	05:33:01	238	132	808	734	0	-34.7^*1	1.2e+15^*2	4.0e+30^*2	255	C2 C3 SXT PHTX DST Java Movie	Partial Halo
1999/02/10	04:32:29	269	55	376	331	221	-5.3^*1	1.5e+14	1.0e+29	277	C2 C3 SXT PHTX DST Java Movie	Poor Event
1999/02/10	06:32:30	29	15	663	638	641	-2.9^*1	----	----	23	C2 C3 SXT PHTX DST Java Movie
1999/02/10	13:56:31	181	62	171	147	0	-4.3^*1	1.9e+14	2.7e+28	181	C2 C3 SXT PHTX DST Java Movie	Only C2
1999/02/10	14:57:18	125	90	849	1028	961	22.0	6.6e+14	2.4e+30	134	C2 C3 SXT PHTX DST Java Movie
1999/02/10	23:57:26	98	37	312	305	102	-3.7^*1	8.7e+12^*2	4.2e+27^*2	96	C2 C3 SXT PHTX DST Java Movie	Only 3 points; Only C2
1999/02/12	03:57:16	109	123	730	778	775	5.6	9.2e+14^*2	2.4e+30^*2	83	SXT PHTX DST Java Movie	Partial Halo
1999/02/13	14:56:31	97	94	874	672	0	-203.9^*1	2.7e+14^*2	1.0e+30^*2	103	SXT PHTX DST Java Movie	Only 3 points; Only C2
1999/02/13	18:31:17	89	115	694	779	781	9.4	2.4e+15	5.7e+30	73	SXT PHTX DST Java Movie
1999/02/14	00:56:31	87	20	296	248	0	-11.8^*1	----	----	107	C2 C3 SXT PHTX DST Java Movie	Newly inserted on 2006/11/06; Very Poor Event
1999/02/14	03:55:17	88	19	342	295	267	-3.3^*1	----	----	128	C2 C3 SXT PHTX DST Java Movie	Newly inserted on 2006/11/06; Very Poor Event
1999/02/14	07:30:05	300	28	690	601	0	-29.0	3.3e+13	7.8e+28	296	C2 C3 SXT PHTX DST Java Movie
1999/02/14	11:08:09	62	147	758	909	1692	104.0^*1	----	----	54	C2 C3 SXT PHTX DST Java Movie	Newly inserted on 2005/09/21; Poor Event; Only 3 points; Only C2; Partial Halo
1999/02/20	05:30:05	265	55	293	265	164	-3.2^*1	1.8e+14	7.8e+28	266	C2 C3 195 SXT PHTX DST Java Movie
1999/02/20	08:30:05	305	8	221	231	253	0.9^*1	----	----	302	C2 C3 195 SXT PHTX DST Java Movie
1999/02/20	10:30:05	272	32	160	182	378	5.2^*1	2.6e+14	3.3e+28	267	C2 C3 195 SXT PHTX DST Java Movie	Only C2
1999/02/20	15:54:05	268	49	258	253	242	-0.4	2.8e+14	9.5e+28	265	C2 C3 195 SXT PHTX DST Java Movie
1999/02/20	15:54:05	46	69	838	780	745	-10.9^*1	2.8e+14	1.0e+30	44	C2 C3 195 SXT PHTX DST Java Movie
1999/02/20	21:42:05	187	13	627	666	788	14.3^*1	----	----	187	C2 C3 195 SXT PHTX DST Java Movie	Only 3 points; Only C3
1999/02/21	09:54:05	66	16	437	409	345	-4.2	----	----	68	C2 C3 SXT PHTX DST Java Movie
1999/02/21	10:30:05	273	65	350	340	299	-1.7	3.9e+14	2.4e+29	267	C2 C3 SXT PHTX DST Java Movie
1999/02/21	16:54:05	37	42	----	---	---	---	6.0e+12^*2	3.0e+22^*2	35	C2 C3 SXT PHTX DST Java Movie	Very Poor Event; Only C2; Unable to measure
1999/02/22	06:30:05	245	13	509	494	458	-2.7	----	----	240	C2 C3 SXT PHTX DST Java Movie
1999/02/22	23:26:05	169	134	312	502	497	11.2^*1	1.2e+15^*2	6.1e+29^*2	197	C2 C3 SXT PHTX DST Java Movie	Partial Halo
1999/02/23	10:54:06	255	45	519	471	399	-7.7	1.0e+14	1.4e+29	242	C2 C3 SXT PHTX DST Java Movie
1999/02/24	01:54:05	247	102	422	243	0	-22.0^*1	2.0e+14	1.8e+29	267	C2 C3 SXT PHTX DST Java Movie
1999/02/24	10:54:05	196	80	164	255	359	6.7^*1	5.5e+14	7.4e+28	208	C2 C3 SXT PHTX DST Java Movie	Poor Event; Only C3
1999/02/24	18:26:05	350	115	315	567	546	12.6	2.1e+15	1.0e+30	16	C2 C3 SXT PHTX DST Java Movie
1999/02/25	03:26:05	303	60	766	1024	976	29.3	5.3e+14	1.5e+30	288	C2 C3 SXT PHTX DST Java Movie
1999/02/25	06:54:05	132	26	727	866	1066	33.7	1.3e+14	3.5e+29	138	C2 C3 SXT PHTX DST Java Movie
1999/02/25	13:54:05	215	106	378	402	436	3.3^*1	----	----	220	C2 C3 SXT PHTX DST Java Movie	Only C3
1999/02/25	17:54:06	89	73	432	424	416	-0.8	1.9e+14	1.8e+29	94	C2 C3 SXT PHTX DST Java Movie
1999/02/26	02:54:05	111	18	322	303	263	-1.9	----	----	115	C2 C3 SXT PHTX DST Java Movie
1999/02/26	04:54:05	225	76	711	644	590	-11.3	1.9e+13	4.9e+28	229	C2 C3 SXT PHTX DST Java Movie
1999/02/27	01:54:05	129	12	527	486	404	-6.7^*1	----	----	128	C2 C3 SXT PHTX DST Java Movie
1999/02/27	06:26:05	117	17	446	384	83	-10.6^*1	----	----	115	C2 C3 SXT PHTX DST Java Movie
1999/02/27	23:26:05	302	23	662	557	0	-26.8	5.9e+13	1.3e+29	290	C2 C3 SXT PHTX DST Java Movie
1999/02/28	17:54:05	301	64	329	364	460	5.2	----	----	297	C2 C3 SXT PHTX DST Java Movie

*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).