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

1996/03/02 04:11:53 88 36 108 120 177 1.0^*1 1.5e+14 8.7e+27 86 C2 C3 SXT PHTX DST Java Movie Poor Event

1996/03/03 04:12:30 99 26 186 232 215 2.3^*1 1.6e+14^*2 2.8e+28^*2 99 C2 C3 SXT PHTX DST Java Movie Poor Event; Only C3

1996/03/05 01:32:07 96 37 47 61 117 0.5^*1 ---- ---- 98 C2 C3 SXT PHTX DST Java Movie Poor Event

1996/03/05 16:16:09 270 16 174 244 552 16.8^*1 ---- ---- 266 C2 C3 SXT PHTX DST Java Movie Very Poor Event; Only C3

1996/03/06 05:38:36 268 55 175 --- --- --- 3.6e+13^*2 5.6e+27^*2 261 C2 C3 SXT PHTX DST Java Movie Very Poor Event; Only 2 points; Only C3

1996/03/07 01:00:19 57 39 200 169 135 -2.3^*1 3.8e+14^*2 7.5e+28^*2 53 C2 C3 SXT PHTX DST Java Movie Poor Event; Only 3 points; Only C3

1996/03/07 07:51:56 91 43 60 61 75 0.1^*1 1.2e+14 2.1e+27 87 C2 C3 SXT PHTX DST Java Movie Poor Event

1996/03/08 07:12:03 90 19 170 229 189 2.8^*1 ---- ---- 85 C2 C3 SXT PHTX DST Java Movie Poor Event; Only C3

1996/03/09 04:27:49 84 39 93 82 0 -1.1^*1 7.1e+13^*2 3.1e+27^*2 82 C2 C3 SXT PHTX DST Java Movie Only 3 points

1996/03/11 07:27:12 261 32 15 15 17 0.0^*1 1.5e+13 1.7e+25 261 C2 C3 SXT PHTX DST Java Movie Very Poor Event; Only C2

1996/03/11 18:22:39 86 52 244 352 656 20.1^*1 4.4e+14^*2 1.3e+29^*2 77 C2 C3 SXT PHTX DST Java Movie Only 3 points

1996/03/13 02:42:06 105 17 130 195 312 4.0^*1 ---- ---- 106 C2 C3 SXT PHTX DST Java Movie

1996/03/14 09:38:00 101 22 74 94 177 1.2^*1 2.1e+14 5.7e+27 99 C2 C3 SXT PHTX DST Java Movie

1996/03/14 11:44:18 285 59 418 307 302 -8.9^*1 1.2e+15^*2 1.0e+30^*2 292 C2 C3 SXT PHTX DST Java Movie

1996/03/15 11:44:58 349 7 225 249 433 6.3^*1 ---- ---- 350 C2 C3 SXT PHTX DST Java Movie Very Poor Event; Only 3 points; Only C2

1996/03/15 13:54:27 101 26 222 244 386 4.7^*1 2.7e+13^*2 6.7e+27^*2 101 C2 C3 SXT PHTX DST Java Movie Only 3 points

1996/03/15 23:57:34 76 29 71 98 198 1.9^*1 3.8e+14^*2 9.5e+27^*2 78 C2 C3 SXT PHTX DST Java Movie Very Poor Event; Only C3

1996/03/16 02:03:38 262 27 65 107 292 3.8^*1 6.9e+14^*2 1.4e+28^*2 267 C2 C3 SXT PHTX DST Java Movie Very Poor Event; Only 3 points; Only C2

1996/03/17 12:25:18 89 36 20 31 109 0.5^*1 1.2e+13^*2 2.5e+25^*2 92 C2 C3 SXT PHTX DST Java Movie Very Poor Event; Only C2

1996/03/18 02:45:52 94 22 ---- --- --- --- 6.3e+13^*2 3.2e+23^*2 92 C2 C3 SXT PHTX DST Java Movie Very Poor Event; Only C2; Unable to measure

1996/03/18 08:33:09 276 25 158 177 212 1.2^*1 1.3e+14^*2 1.7e+28^*2 280 C2 C3 SXT PHTX DST Java Movie Very Poor Event

1996/03/18 16:26:43 257 32 ---- --- --- --- 1.0e+14^*2 5.1e+23^*2 263 C2 C3 SXT PHTX DST Java Movie Very Poor Event; Only C2; Unable to measure

1996/03/22 00:48:44 282 17 142 177 228 2.0^*1 ---- ---- 284 C2 C3 SXT PHTX DST Java Movie Very Poor Event; Only C3

1996/03/23 16:01:30 142 12 45 42 0 -0.2^*1 ---- ---- 135 C2 C3 SXT PHTX DST Java Movie Very Poor Event; Only 3 points; Only C2

1996/03/24 04:52:50 286 35 63 31 0 -3.3^*1 1.3e+14 2.5e+27 284 C2 C3 SXT PHTX DST Java Movie Very Poor Event; Only C2

1996/03/28 20:24:05 99 42 13 9 0 -0.1^*1 ---- ---- 90 C2 C3 SXT PHTX DST Java Movie Very Poor Event; Only C2

1996/03/30 08:06:05 87 51 18 9 0 -0.3^*1 3.0e+14 4.9e+26 92 C2 C3 SXT 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
1996/03/02	04:11:53	88	36	108	120	177	1.0^*1	1.5e+14	8.7e+27	86	C2 C3 SXT PHTX DST Java Movie	Poor Event
1996/03/03	04:12:30	99	26	186	232	215	2.3^*1	1.6e+14^*2	2.8e+28^*2	99	C2 C3 SXT PHTX DST Java Movie	Poor Event; Only C3
1996/03/05	01:32:07	96	37	47	61	117	0.5^*1	----	----	98	C2 C3 SXT PHTX DST Java Movie	Poor Event
1996/03/05	16:16:09	270	16	174	244	552	16.8^*1	----	----	266	C2 C3 SXT PHTX DST Java Movie	Very Poor Event; Only C3
1996/03/06	05:38:36	268	55	175	---	---	---	3.6e+13^*2	5.6e+27^*2	261	C2 C3 SXT PHTX DST Java Movie	Very Poor Event; Only 2 points; Only C3
1996/03/07	01:00:19	57	39	200	169	135	-2.3^*1	3.8e+14^*2	7.5e+28^*2	53	C2 C3 SXT PHTX DST Java Movie	Poor Event; Only 3 points; Only C3
1996/03/07	07:51:56	91	43	60	61	75	0.1^*1	1.2e+14	2.1e+27	87	C2 C3 SXT PHTX DST Java Movie	Poor Event
1996/03/08	07:12:03	90	19	170	229	189	2.8^*1	----	----	85	C2 C3 SXT PHTX DST Java Movie	Poor Event; Only C3
1996/03/09	04:27:49	84	39	93	82	0	-1.1^*1	7.1e+13^*2	3.1e+27^*2	82	C2 C3 SXT PHTX DST Java Movie	Only 3 points
1996/03/11	07:27:12	261	32	15	15	17	0.0^*1	1.5e+13	1.7e+25	261	C2 C3 SXT PHTX DST Java Movie	Very Poor Event; Only C2
1996/03/11	18:22:39	86	52	244	352	656	20.1^*1	4.4e+14^*2	1.3e+29^*2	77	C2 C3 SXT PHTX DST Java Movie	Only 3 points
1996/03/13	02:42:06	105	17	130	195	312	4.0^*1	----	----	106	C2 C3 SXT PHTX DST Java Movie
1996/03/14	09:38:00	101	22	74	94	177	1.2^*1	2.1e+14	5.7e+27	99	C2 C3 SXT PHTX DST Java Movie
1996/03/14	11:44:18	285	59	418	307	302	-8.9^*1	1.2e+15^*2	1.0e+30^*2	292	C2 C3 SXT PHTX DST Java Movie
1996/03/15	11:44:58	349	7	225	249	433	6.3^*1	----	----	350	C2 C3 SXT PHTX DST Java Movie	Very Poor Event; Only 3 points; Only C2
1996/03/15	13:54:27	101	26	222	244	386	4.7^*1	2.7e+13^*2	6.7e+27^*2	101	C2 C3 SXT PHTX DST Java Movie	Only 3 points
1996/03/15	23:57:34	76	29	71	98	198	1.9^*1	3.8e+14^*2	9.5e+27^*2	78	C2 C3 SXT PHTX DST Java Movie	Very Poor Event; Only C3
1996/03/16	02:03:38	262	27	65	107	292	3.8^*1	6.9e+14^*2	1.4e+28^*2	267	C2 C3 SXT PHTX DST Java Movie	Very Poor Event; Only 3 points; Only C2
1996/03/17	12:25:18	89	36	20	31	109	0.5^*1	1.2e+13^*2	2.5e+25^*2	92	C2 C3 SXT PHTX DST Java Movie	Very Poor Event; Only C2
1996/03/18	02:45:52	94	22	----	---	---	---	6.3e+13^*2	3.2e+23^*2	92	C2 C3 SXT PHTX DST Java Movie	Very Poor Event; Only C2; Unable to measure
1996/03/18	08:33:09	276	25	158	177	212	1.2^*1	1.3e+14^*2	1.7e+28^*2	280	C2 C3 SXT PHTX DST Java Movie	Very Poor Event
1996/03/18	16:26:43	257	32	----	---	---	---	1.0e+14^*2	5.1e+23^*2	263	C2 C3 SXT PHTX DST Java Movie	Very Poor Event; Only C2; Unable to measure
1996/03/22	00:48:44	282	17	142	177	228	2.0^*1	----	----	284	C2 C3 SXT PHTX DST Java Movie	Very Poor Event; Only C3
1996/03/23	16:01:30	142	12	45	42	0	-0.2^*1	----	----	135	C2 C3 SXT PHTX DST Java Movie	Very Poor Event; Only 3 points; Only C2
1996/03/24	04:52:50	286	35	63	31	0	-3.3^*1	1.3e+14	2.5e+27	284	C2 C3 SXT PHTX DST Java Movie	Very Poor Event; Only C2
1996/03/28	20:24:05	99	42	13	9	0	-0.1^*1	----	----	90	C2 C3 SXT PHTX DST Java Movie	Very Poor Event; Only C2
1996/03/30	08:06:05	87	51	18	9	0	-0.3^*1	3.0e+14	4.9e+26	92	C2 C3 SXT 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).