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

2009/03/01 03:30:09 112 26 827 1330 3224 446.1^*1 3.0e+13^*2 1.0e+29^*2 115 PHTX DST Java Movie Poor Event; Only 3 points; Only C2

2009/03/01 16:06:26 279 10 279 336 345 2.9^*1 ---- ---- 279 PHTX DST Java Movie Poor Event

2009/03/01 16:54:25 325 12 293 282 96 -3.5^*1 ---- ---- 322 PHTX DST Java Movie Poor Event; Only C2

2009/03/01 20:59:10 325 7 256 277 486 7.7^*1 ---- ---- 318 PHTX DST Java Movie Poor Event; Only C2

2009/03/02 00:30:03 326 9 151 210 614 15.5^*1 ---- ---- 320 C2 C3 195 PHTX DST Java Movie Very Poor Event; Only C2

2009/03/02 06:30:03 109 6 228 272 283 2.0^*1 ---- ---- 112 C2 C3 195 PHTX DST Java Movie Very Poor Event

2009/03/02 23:06:03 61 30 367 401 454 4.2^*1 1.8e+14 1.2e+29 70 C2 C3 195 PHTX DST Java Movie Poor Event

2009/03/03 21:54:03 333 8 273 210 0 -22.8^*1 ---- ---- 332 C2 C3 195 PHTX DST Java Movie Poor Event; Only C2

2009/03/04 05:30:04 269 50 158 215 337 4.4^*1 4.5e+14 5.7e+28 265 C2 C3 195 PHTX DST Java Movie Poor Event

2009/03/05 04:30:25 6 5 335 482 1758 131.4^*1 ---- ---- 8 C2 C3 195 PHTX DST Java Movie Poor Event; Only 3 points; Only C2

2009/03/05 05:30:03 210 12 447 436 223 -6.7^*1 ---- ---- 215 C2 C3 195 PHTX DST Java Movie Very Poor Event; Only C2

2009/03/05 12:54:03 266 56 121 122 139 0.2^*1 1.2e+14 9.2e+27 267 C2 C3 195 PHTX DST Java Movie Poor Event; Only C2

2009/03/05 23:30:03 262 69 149 311 279 3.4^*1 1.5e+15 1.7e+29 262 C2 C3 195 PHTX DST Java Movie

2009/03/07 00:06:03 82 19 242 234 229 -0.4^*1 ---- ---- 88 C2 C3 195 PHTX DST Java Movie Poor Event

2009/03/09 05:30:03 79 11 313 424 971 38.0^*1 ---- ---- 78 C2 C3 195 PHTX DST Java Movie Very Poor Event; Only C2

2009/03/10 02:54:03 148 22 78 100 177 1.2^*1 1.6e+14 4.9e+27 133 C2 C3 195 PHTX DST Java Movie Very Poor Event; Only C2

2009/03/10 05:54:03 305 11 429 278 0 -53.4^*1 ---- ---- 298 C2 C3 195 PHTX DST Java Movie Only C2

2009/03/10 12:54:03 289 12 441 651 1538 96.4^*1 ---- ---- 289 C2 C3 195 PHTX DST Java Movie Very Poor Event; Only C2

2009/03/11 02:54:03 108 10 252 313 720 20.3^*1 ---- ---- 105 C2 C3 195 PHTX DST Java Movie Poor Event; Only C2

2009/03/11 08:30:04 292 11 248 336 775 24.0^*1 ---- ---- 289 C2 C3 195 PHTX DST Java Movie Very Poor Event; Only C2

2009/03/12 02:06:05 76 34 139 135 77 -0.6^*1 3.7e+13 3.6e+27 72 C2 C3 195 PHTX DST Java Movie Very Poor Event; Only C2

2009/03/12 21:05:49 24 10 352 608 1727 123.5^*1 ---- ---- 29 C2 C3 195 PHTX DST Java Movie Very Poor Event; Only C2

2009/03/13 05:30:03 4 6 393 738 2675 304.0^*1 ---- ---- 5 C2 C3 195 PHTX DST Java Movie Very Poor Event; Only 3 points; Only C2

2009/03/14 10:34:01 33 7 659 1211 3540 541.4^*1 ---- ---- 41 C2 C3 195 PHTX DST Java Movie Very Poor Event; Only 3 points; Only C2

2009/03/14 11:54:03 7 8 356 600 1751 130.6^*1 ---- ---- 11 C2 C3 195 PHTX DST Java Movie Very Poor Event; Only 3 points; Only C2

2009/03/14 13:54:03 8 8 451 641 1587 105.1^*1 ---- ---- 10 C2 C3 195 PHTX DST Java Movie Very Poor Event; Only C2

2009/03/14 23:30:03 296 14 390 331 0 -24.6^*1 ---- ---- 292 C2 C3 195 PHTX DST Java Movie Poor Event; Only C2

2009/03/15 20:30:03 342 6 263 413 1196 59.5^*1 ---- ---- 338 C2 C3 195 PHTX DST Java Movie Very Poor Event; Only C2

2009/03/16 05:06:03 251 25 252 319 412 5.5^*1 1.5e+14 4.7e+28 254 C2 C3 195 PHTX DST Java Movie

2009/03/16 06:06:25 98 68 179 334 344 4.9^*1 1.4e+15 2.3e+29 101 C2 C3 195 PHTX DST Java Movie

2009/03/16 07:54:03 6 9 413 660 1781 136.7^*1 ---- ---- 11 C2 C3 195 PHTX DST Java Movie Very Poor Event; Only C2

2009/03/17 04:06:03 105 11 299 349 415 4.6^*1 ---- ---- 102 PHTX DST Java Movie Poor Event

2009/03/17 07:06:03 103 6 209 249 361 4.2^*1 ---- ---- 106 PHTX DST Java Movie Very Poor Event

2009/03/17 09:54:03 74 11 238 297 321 3.2^*1 ---- ---- 80 PHTX DST Java Movie Very Poor Event

2009/03/17 17:06:04 74 43 76 204 231 2.2^*1 1.3e+15 3.8e+28 78 PHTX DST Java Movie Poor Event

2009/03/18 12:30:03 247 19 247 319 779 24.7^*1 ---- ---- 252 C2 C3 195 PHTX DST Java Movie Very Poor Event; Only C2

2009/03/19 05:30:03 278 19 154 149 0 -1.5^*1 ---- ---- 274 C2 C3 195 PHTX DST Java Movie Very Poor Event; Only C2

2009/03/19 12:30:03 65 7 112 113 119 0.1^*1 ---- ---- 70 C2 C3 195 PHTX DST Java Movie Very Poor Event

2009/03/20 18:30:05 281 15 319 482 1250 64.7^*1 ---- ---- 283 C2 C3 195 PHTX DST Java Movie Very Poor Event; Only C2

2009/03/21 00:54:03 236 7 181 201 285 2.6^*1 ---- ---- 236 C2 C3 195 PHTX DST Java Movie Very Poor Event

2009/03/21 16:06:04 103 15 175 231 310 4.0^*1 ---- ---- 97 C2 C3 195 PHTX DST Java Movie Very Poor Event

2009/03/21 22:06:04 95 16 140 122 0 -2.0^*1 ---- ---- 96 C2 C3 195 PHTX DST Java Movie Very Poor Event

2009/03/23 11:06:05 96 23 47 59 112 0.5^*1 2.2e+14 2.4e+27 94 C2 C3 195 PHTX DST Java Movie Very Poor Event

2009/03/23 20:30:03 266 16 260 189 0 -25.9^*1 ---- ---- 268 C2 C3 195 PHTX DST Java Movie Very Poor Event; Only C2

2009/03/24 08:54:03 104 41 71 48 0 -1.9^*1 6.7e+13 1.7e+27 103 C2 C3 195 PHTX DST Java Movie Very Poor Event

2009/03/24 23:30:03 108 43 232 225 219 -0.4^*1 2.7e+13 7.2e+27 99 C2 C3 195 PHTX DST Java Movie Poor Event

2009/03/25 08:30:03 122 35 232 234 245 0.3^*1 ---- ---- 117 C2 C3 195 PHTX DST Java Movie Very Poor Event; Only C2

2009/03/25 14:54:03 117 18 346 433 498 7.7^*1 ---- ---- 119 C2 C3 195 PHTX DST Java Movie Very Poor Event

2009/03/26 15:54:03 184 85 109 169 252 2.5^*1 8.5e+14 5.1e+28 183 C2 C3 195 PHTX DST Java Movie

2009/03/27 13:54:03 340 6 345 402 821 24.5^*1 ---- ---- 335 C2 C3 195 PHTX DST Java Movie Very Poor Event; Only C2

2009/03/28 12:54:03 129 8 167 226 700 19.7^*1 ---- ---- 130 C2 C3 195 PHTX DST Java Movie Very Poor Event; Only C2

2009/03/29 09:54:26 0 9 314 340 549 9.0^*1 ---- ---- 355 C2 C3 195 PHTX DST Java Movie Very Poor Event; Only C2

2009/03/29 14:30:03 52 4 255 299 809 25.3^*1 ---- ---- 53 C2 C3 195 PHTX DST Java Movie Very Poor Event; Only C2

2009/03/29 17:54:03 67 7 424 300 0 -68.1^*1 ---- ---- 70 C2 C3 195 PHTX DST Java Movie Very Poor Event; Only C2

2009/03/29 21:30:08 326 8 414 811 2883 351.3^*1 ---- ---- 319 C2 C3 195 PHTX DST Java Movie Very Poor Event; Only 3 points; Only C2

2009/03/30 10:30:21 267 27 192 223 505 9.6^*1 4.0e+13 7.4e+27 274 C2 C3 195 PHTX DST Java Movie Very Poor Event; Only C2

2009/03/30 12:54:03 41 7 380 360 0 -10.7^*1 ---- ---- 42 C2 C3 195 PHTX DST Java Movie Very Poor Event; Only 3 points; Only C2

2009/03/30 18:06:03 46 7 363 279 0 -25.1^*1 ---- ---- 48 C2 C3 195 PHTX DST Java Movie Poor Event; Only C2

2009/03/31 10:06:03 319 11 158 185 461 8.1^*1 ---- ---- 307 C2 C3 195 PHTX DST Java Movie Very Poor Event; Only C2

2009/03/31 12:30:03 284 24 190 226 593 13.6^*1 2.7e+12^*2 4.9e+26^*2 287 C2 C3 195 PHTX DST Java Movie Very Poor Event; Only C2

2009/03/31 15:08:02 69 49 121 148 286 3.0^*1 1.6e+14 1.1e+28 65 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
2009/03/01	03:30:09	112	26	827	1330	3224	446.1^*1	3.0e+13^*2	1.0e+29^*2	115	PHTX DST Java Movie	Poor Event; Only 3 points; Only C2
2009/03/01	16:06:26	279	10	279	336	345	2.9^*1	----	----	279	PHTX DST Java Movie	Poor Event
2009/03/01	16:54:25	325	12	293	282	96	-3.5^*1	----	----	322	PHTX DST Java Movie	Poor Event; Only C2
2009/03/01	20:59:10	325	7	256	277	486	7.7^*1	----	----	318	PHTX DST Java Movie	Poor Event; Only C2
2009/03/02	00:30:03	326	9	151	210	614	15.5^*1	----	----	320	C2 C3 195 PHTX DST Java Movie	Very Poor Event; Only C2
2009/03/02	06:30:03	109	6	228	272	283	2.0^*1	----	----	112	C2 C3 195 PHTX DST Java Movie	Very Poor Event
2009/03/02	23:06:03	61	30	367	401	454	4.2^*1	1.8e+14	1.2e+29	70	C2 C3 195 PHTX DST Java Movie	Poor Event
2009/03/03	21:54:03	333	8	273	210	0	-22.8^*1	----	----	332	C2 C3 195 PHTX DST Java Movie	Poor Event; Only C2
2009/03/04	05:30:04	269	50	158	215	337	4.4^*1	4.5e+14	5.7e+28	265	C2 C3 195 PHTX DST Java Movie	Poor Event
2009/03/05	04:30:25	6	5	335	482	1758	131.4^*1	----	----	8	C2 C3 195 PHTX DST Java Movie	Poor Event; Only 3 points; Only C2
2009/03/05	05:30:03	210	12	447	436	223	-6.7^*1	----	----	215	C2 C3 195 PHTX DST Java Movie	Very Poor Event; Only C2
2009/03/05	12:54:03	266	56	121	122	139	0.2^*1	1.2e+14	9.2e+27	267	C2 C3 195 PHTX DST Java Movie	Poor Event; Only C2
2009/03/05	23:30:03	262	69	149	311	279	3.4^*1	1.5e+15	1.7e+29	262	C2 C3 195 PHTX DST Java Movie
2009/03/07	00:06:03	82	19	242	234	229	-0.4^*1	----	----	88	C2 C3 195 PHTX DST Java Movie	Poor Event
2009/03/09	05:30:03	79	11	313	424	971	38.0^*1	----	----	78	C2 C3 195 PHTX DST Java Movie	Very Poor Event; Only C2
2009/03/10	02:54:03	148	22	78	100	177	1.2^*1	1.6e+14	4.9e+27	133	C2 C3 195 PHTX DST Java Movie	Very Poor Event; Only C2
2009/03/10	05:54:03	305	11	429	278	0	-53.4^*1	----	----	298	C2 C3 195 PHTX DST Java Movie	Only C2
2009/03/10	12:54:03	289	12	441	651	1538	96.4^*1	----	----	289	C2 C3 195 PHTX DST Java Movie	Very Poor Event; Only C2
2009/03/11	02:54:03	108	10	252	313	720	20.3^*1	----	----	105	C2 C3 195 PHTX DST Java Movie	Poor Event; Only C2
2009/03/11	08:30:04	292	11	248	336	775	24.0^*1	----	----	289	C2 C3 195 PHTX DST Java Movie	Very Poor Event; Only C2
2009/03/12	02:06:05	76	34	139	135	77	-0.6^*1	3.7e+13	3.6e+27	72	C2 C3 195 PHTX DST Java Movie	Very Poor Event; Only C2
2009/03/12	21:05:49	24	10	352	608	1727	123.5^*1	----	----	29	C2 C3 195 PHTX DST Java Movie	Very Poor Event; Only C2
2009/03/13	05:30:03	4	6	393	738	2675	304.0^*1	----	----	5	C2 C3 195 PHTX DST Java Movie	Very Poor Event; Only 3 points; Only C2
2009/03/14	10:34:01	33	7	659	1211	3540	541.4^*1	----	----	41	C2 C3 195 PHTX DST Java Movie	Very Poor Event; Only 3 points; Only C2
2009/03/14	11:54:03	7	8	356	600	1751	130.6^*1	----	----	11	C2 C3 195 PHTX DST Java Movie	Very Poor Event; Only 3 points; Only C2
2009/03/14	13:54:03	8	8	451	641	1587	105.1^*1	----	----	10	C2 C3 195 PHTX DST Java Movie	Very Poor Event; Only C2
2009/03/14	23:30:03	296	14	390	331	0	-24.6^*1	----	----	292	C2 C3 195 PHTX DST Java Movie	Poor Event; Only C2
2009/03/15	20:30:03	342	6	263	413	1196	59.5^*1	----	----	338	C2 C3 195 PHTX DST Java Movie	Very Poor Event; Only C2
2009/03/16	05:06:03	251	25	252	319	412	5.5^*1	1.5e+14	4.7e+28	254	C2 C3 195 PHTX DST Java Movie
2009/03/16	06:06:25	98	68	179	334	344	4.9^*1	1.4e+15	2.3e+29	101	C2 C3 195 PHTX DST Java Movie
2009/03/16	07:54:03	6	9	413	660	1781	136.7^*1	----	----	11	C2 C3 195 PHTX DST Java Movie	Very Poor Event; Only C2
2009/03/17	04:06:03	105	11	299	349	415	4.6^*1	----	----	102	PHTX DST Java Movie	Poor Event
2009/03/17	07:06:03	103	6	209	249	361	4.2^*1	----	----	106	PHTX DST Java Movie	Very Poor Event
2009/03/17	09:54:03	74	11	238	297	321	3.2^*1	----	----	80	PHTX DST Java Movie	Very Poor Event
2009/03/17	17:06:04	74	43	76	204	231	2.2^*1	1.3e+15	3.8e+28	78	PHTX DST Java Movie	Poor Event
2009/03/18	12:30:03	247	19	247	319	779	24.7^*1	----	----	252	C2 C3 195 PHTX DST Java Movie	Very Poor Event; Only C2
2009/03/19	05:30:03	278	19	154	149	0	-1.5^*1	----	----	274	C2 C3 195 PHTX DST Java Movie	Very Poor Event; Only C2
2009/03/19	12:30:03	65	7	112	113	119	0.1^*1	----	----	70	C2 C3 195 PHTX DST Java Movie	Very Poor Event
2009/03/20	18:30:05	281	15	319	482	1250	64.7^*1	----	----	283	C2 C3 195 PHTX DST Java Movie	Very Poor Event; Only C2
2009/03/21	00:54:03	236	7	181	201	285	2.6^*1	----	----	236	C2 C3 195 PHTX DST Java Movie	Very Poor Event
2009/03/21	16:06:04	103	15	175	231	310	4.0^*1	----	----	97	C2 C3 195 PHTX DST Java Movie	Very Poor Event
2009/03/21	22:06:04	95	16	140	122	0	-2.0^*1	----	----	96	C2 C3 195 PHTX DST Java Movie	Very Poor Event
2009/03/23	11:06:05	96	23	47	59	112	0.5^*1	2.2e+14	2.4e+27	94	C2 C3 195 PHTX DST Java Movie	Very Poor Event
2009/03/23	20:30:03	266	16	260	189	0	-25.9^*1	----	----	268	C2 C3 195 PHTX DST Java Movie	Very Poor Event; Only C2
2009/03/24	08:54:03	104	41	71	48	0	-1.9^*1	6.7e+13	1.7e+27	103	C2 C3 195 PHTX DST Java Movie	Very Poor Event
2009/03/24	23:30:03	108	43	232	225	219	-0.4^*1	2.7e+13	7.2e+27	99	C2 C3 195 PHTX DST Java Movie	Poor Event
2009/03/25	08:30:03	122	35	232	234	245	0.3^*1	----	----	117	C2 C3 195 PHTX DST Java Movie	Very Poor Event; Only C2
2009/03/25	14:54:03	117	18	346	433	498	7.7^*1	----	----	119	C2 C3 195 PHTX DST Java Movie	Very Poor Event
2009/03/26	15:54:03	184	85	109	169	252	2.5^*1	8.5e+14	5.1e+28	183	C2 C3 195 PHTX DST Java Movie
2009/03/27	13:54:03	340	6	345	402	821	24.5^*1	----	----	335	C2 C3 195 PHTX DST Java Movie	Very Poor Event; Only C2
2009/03/28	12:54:03	129	8	167	226	700	19.7^*1	----	----	130	C2 C3 195 PHTX DST Java Movie	Very Poor Event; Only C2
2009/03/29	09:54:26	0	9	314	340	549	9.0^*1	----	----	355	C2 C3 195 PHTX DST Java Movie	Very Poor Event; Only C2
2009/03/29	14:30:03	52	4	255	299	809	25.3^*1	----	----	53	C2 C3 195 PHTX DST Java Movie	Very Poor Event; Only C2
2009/03/29	17:54:03	67	7	424	300	0	-68.1^*1	----	----	70	C2 C3 195 PHTX DST Java Movie	Very Poor Event; Only C2
2009/03/29	21:30:08	326	8	414	811	2883	351.3^*1	----	----	319	C2 C3 195 PHTX DST Java Movie	Very Poor Event; Only 3 points; Only C2
2009/03/30	10:30:21	267	27	192	223	505	9.6^*1	4.0e+13	7.4e+27	274	C2 C3 195 PHTX DST Java Movie	Very Poor Event; Only C2
2009/03/30	12:54:03	41	7	380	360	0	-10.7^*1	----	----	42	C2 C3 195 PHTX DST Java Movie	Very Poor Event; Only 3 points; Only C2
2009/03/30	18:06:03	46	7	363	279	0	-25.1^*1	----	----	48	C2 C3 195 PHTX DST Java Movie	Poor Event; Only C2
2009/03/31	10:06:03	319	11	158	185	461	8.1^*1	----	----	307	C2 C3 195 PHTX DST Java Movie	Very Poor Event; Only C2
2009/03/31	12:30:03	284	24	190	226	593	13.6^*1	2.7e+12^*2	4.9e+26^*2	287	C2 C3 195 PHTX DST Java Movie	Very Poor Event; Only C2
2009/03/31	15:08:02	69	49	121	148	286	3.0^*1	1.6e+14	1.1e+28	65	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).