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

1998/12/01 00:54:05 298 27 321 272 0 -11.4^*1 ---- ---- 287 C2 C3 195 SXT PHTX DST Java Movie

1998/12/01 06:30:05 106 31 303 406 399 4.9 ---- ---- 98 C2 C3 195 SXT PHTX DST Java Movie

1998/12/01 13:54:06 281 66 334 314 252 -2.8 ---- ---- 283 C2 C3 195 SXT PHTX DST Java Movie

1998/12/02 06:30:05 234 5 754 935 1084 35.5 ---- ---- 242 C2 C3 195 SXT PHTX DST Java Movie

1998/12/02 06:30:05 215 6 655 743 975 26.9^*1 ---- ---- 219 C2 C3 195 SXT PHTX DST Java Movie

1998/12/03 06:30:05 48 33 84 72 0 -2.7^*1 ---- ---- 49 C2 C3 195 SXT PHTX DST Java Movie Only C2

1998/12/03 09:30:08 90 36 529 439 0 -27.9 ---- ---- 98 C2 C3 195 SXT PHTX DST Java Movie

1998/12/04 02:30:05 98 11 611 591 519 -5.6^*1 ---- ---- 98 C2 C3 195 SXT PHTX DST Java Movie

1998/12/04 03:54:05 247 12 532 863 1530 100.1^*1 ---- ---- 255 C2 C3 195 SXT PHTX DST Java Movie Very Poor Event

1998/12/04 13:54:05 139 13 215 312 928 35.0^*1 ---- ---- 135 C2 C3 195 SXT PHTX DST Java Movie Only 3 points; Only C2

1998/12/04 15:30:08 290 44 687 620 300 -21.8^*1 ---- ---- 288 C2 C3 195 SXT PHTX DST Java Movie Poor Event; Only 3 points

1998/12/04 21:30:10 227 65 238 268 366 3.7^*1 ---- ---- 234 C2 C3 195 SXT PHTX DST Java Movie UVCS

1998/12/05 04:30:05 292 48 263 172 0 -15.4^*1 ---- ---- 292 C2 C3 195 SXT PHTX DST Java Movie

1998/12/05 11:54:05 96 18 350 234 0 -26.4^*1 ---- ---- 99 C2 C3 195 SXT PHTX DST Java Movie

1998/12/05 19:32:02 340 23 ---- --- --- --- ---- ---- 342 C2 C3 195 SXT PHTX DST Java Movie Poor Event; Only 1 point; Only C2

1998/12/06 03:54:05 331 36 159 119 0 -14.5^*1 ---- ---- 335 C2 C3 195 SXT PHTX DST Java Movie Poor Event; Only 3 points; Only C2

1998/12/06 05:30:06 95 24 327 205 0 -22.0^*1 ---- ---- 94 C2 C3 195 SXT PHTX DST Java Movie

1998/12/06 10:54:05 118 73 806 640 662 -21.6 ---- ---- 102 C2 C3 195 SXT PHTX DST Java Movie

1998/12/07 15:30:05 327 42 490 497 498 0.6 ---- ---- 331 C2 C3 195 SXT PHTX DST Java Movie

1998/12/08 00:54:05 241 42 258 270 313 1.6^*1 ---- ---- 240 C2 C3 195 SXT PHTX DST Java Movie

1998/12/08 09:30:05 59 111 411 724 623 16.6 ---- ---- 26 C2 C3 195 SXT PHTX DST Java Movie UVCS

1998/12/08 19:04:10 207 74 ---- --- --- --- ---- ---- 208 C2 C3 195 SXT PHTX DST Java Movie Poor Event; Only 1 point; Only C2

1998/12/09 16:30:05 102 21 568 652 1169 47.2^*1 ---- ---- 100 C2 C3 195 SXT PHTX DST Java Movie

1998/12/09 18:30:05 96 14 584 570 547 -2.4 ---- ---- 99 C2 C3 195 SXT PHTX DST Java Movie

1998/12/09 18:30:05 308 52 217 193 0 -8.9^*1 ---- ---- 320 C2 C3 195 SXT PHTX DST Java Movie Only C2

1998/12/09 21:30:08 313 46 225 261 535 10.3^*1 ---- ---- 318 C2 C3 195 SXT PHTX DST Java Movie

1998/12/10 09:54:05 312 59 299 435 810 26.3 ---- ---- 319 C2 C3 195 SXT PHTX DST Java Movie

1998/12/10 11:30:05 219 5 314 492 563 13.2 ---- ---- 220 C2 C3 195 SXT PHTX DST Java Movie

1998/12/10 15:30:05 27 63 334 289 209 -4.2^*1 ---- ---- 13 C2 C3 195 SXT PHTX DST Java Movie

1998/12/10 18:54:05 60 69 212 339 1281 68.1^*1 ---- ---- 64 C2 C3 195 SXT PHTX DST Java Movie Only 3 points; Only C2

1998/12/10 19:54:05 332 74 203 173 0 -4.7^*1 ---- ---- 321 C2 C3 195 SXT PHTX DST Java Movie

1998/12/10 23:30:05 50 126 591 641 923 23.4 ---- ---- 41 C2 C3 195 SXT PHTX DST Java Movie Partial Halo

1998/12/12 12:54:05 124 35 241 212 0 -10.5^*1 ---- ---- 123 SXT PHTX DST Java Movie Poor Event; Only C2

1998/12/14 05:30:05 194 73 223 260 528 10.2^*1 ---- ---- 201 C2 C3 195 SXT PHTX DST Java Movie Only C2

1998/12/14 09:54:05 296 5 524 559 752 14.0^*1 ---- ---- 293 C2 C3 195 SXT PHTX DST Java Movie

1998/12/14 15:30:05 90 32 485 523 551 4.4 ---- ---- 87 C2 C3 195 SXT PHTX DST Java Movie

1998/12/15 07:54:05 225 5 ---- --- --- --- ---- ---- 230 C2 C3 195 SXT PHTX DST Java Movie Newly inserted on 2007/10/09; Only 1 point; Only C2

1998/12/15 08:30:05 276 49 207 138 0 -13.7^*1 ---- ---- 277 C2 C3 195 SXT PHTX DST Java Movie

1998/12/15 12:54:06 246 64 197 297 1148 53.4^*1 ---- ---- 243 C2 C3 195 SXT PHTX DST Java Movie Only 3 points; Only C2

1998/12/15 13:31:55 71 69 392 423 489 4.7 ---- ---- 61 C2 C3 195 SXT PHTX DST Java Movie

1998/12/15 19:31:55 216 9 115 --- --- --- ---- ---- 218 C2 C3 195 SXT PHTX DST Java Movie Newly inserted on 2007/10/09; Only 2 points; Only C2

1998/12/15 21:00:19 77 60 598 --- --- --- ---- ---- 72 C2 C3 195 SXT PHTX DST Java Movie Poor Event; Only 2 points; Only C2

1998/12/16 05:30:05 166 70 363 257 0 -21.0 ---- ---- 167 C2 C3 195 SXT PHTX DST Java Movie

1998/12/16 19:31:57 133 82 201 196 0 -1.8^*1 ---- ---- 117 C2 C3 195 SXT PHTX DST Java Movie Only C2

1998/12/17 08:30:05 Halo 360 302 401 721 19.5^*1 ---- ---- 229 C2 C3 195 SXT PHTX DST Java Movie Poor Event

1998/12/17 15:30:05 235 42 221 360 980 39.1^*1 ---- ---- 232 C2 C3 195 SXT PHTX DST Java Movie Only C2

1998/12/17 18:30:05 263 111 434 479 535 5.7 ---- ---- 260 C2 C3 195 SXT PHTX DST Java Movie

1998/12/17 21:54:05 61 38 739 835 1066 30.1^*1 ---- ---- 57 C2 C3 195 SXT PHTX DST Java Movie

1998/12/18 18:09:47 Halo (OA) 360 1749 1789 1776 17.2^*1 ---- ---- 36 C2 C3 195 SXT PHTX DST Java Movie Only 3 points; Only C3

1998/12/19 08:30:06 31 7 364 483 738 20.8 ---- ---- 34 C2 C3 195 SXT PHTX DST Java Movie

1998/12/19 09:30:14 251 16 247 237 143 -1.9^*1 ---- ---- 249 C2 C3 195 SXT PHTX DST Java Movie

1998/12/19 12:30:05 188 41 155 353 430 7.7 ---- ---- 190 C2 C3 195 SXT PHTX DST Java Movie

1998/12/19 15:30:05 62 7 259 265 307 1.3^*1 ---- ---- 59 C2 C3 195 SXT PHTX DST Java Movie

1998/12/19 20:30:05 63 53 134 103 0 -18.0^*1 ---- ---- 62 C2 C3 195 SXT PHTX DST Java Movie Only 3 points; Only C2

1998/12/19 20:54:05 44 29 295 318 436 4.9 ---- ---- 45 C2 C3 195 SXT PHTX DST Java Movie UVCS

1998/12/20 05:54:05 277 62 156 191 447 7.6^*1 ---- ---- 269 C2 C3 195 SXT PHTX DST Java Movie Only C2

1998/12/20 10:30:06 62 54 235 299 407 6.8 ---- ---- 49 C2 C3 195 SXT PHTX DST Java Movie Only C3

1998/12/20 12:30:19 121 42 363 184 0 -87.0^*1 ---- ---- 99 C2 C3 195 SXT PHTX DST Java Movie Only 3 points

1998/12/20 17:30:21 272 22 752 625 0 -55.8^*1 ---- ---- 295 C2 C3 195 SXT PHTX DST Java Movie Poor Event

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
1998/12/01	00:54:05	298	27	321	272	0	-11.4^*1	----	----	287	C2 C3 195 SXT PHTX DST Java Movie
1998/12/01	06:30:05	106	31	303	406	399	4.9	----	----	98	C2 C3 195 SXT PHTX DST Java Movie
1998/12/01	13:54:06	281	66	334	314	252	-2.8	----	----	283	C2 C3 195 SXT PHTX DST Java Movie
1998/12/02	06:30:05	234	5	754	935	1084	35.5	----	----	242	C2 C3 195 SXT PHTX DST Java Movie
1998/12/02	06:30:05	215	6	655	743	975	26.9^*1	----	----	219	C2 C3 195 SXT PHTX DST Java Movie
1998/12/03	06:30:05	48	33	84	72	0	-2.7^*1	----	----	49	C2 C3 195 SXT PHTX DST Java Movie	Only C2
1998/12/03	09:30:08	90	36	529	439	0	-27.9	----	----	98	C2 C3 195 SXT PHTX DST Java Movie
1998/12/04	02:30:05	98	11	611	591	519	-5.6^*1	----	----	98	C2 C3 195 SXT PHTX DST Java Movie
1998/12/04	03:54:05	247	12	532	863	1530	100.1^*1	----	----	255	C2 C3 195 SXT PHTX DST Java Movie	Very Poor Event
1998/12/04	13:54:05	139	13	215	312	928	35.0^*1	----	----	135	C2 C3 195 SXT PHTX DST Java Movie	Only 3 points; Only C2
1998/12/04	15:30:08	290	44	687	620	300	-21.8^*1	----	----	288	C2 C3 195 SXT PHTX DST Java Movie	Poor Event; Only 3 points
1998/12/04	21:30:10	227	65	238	268	366	3.7^*1	----	----	234	C2 C3 195 SXT PHTX DST Java Movie UVCS
1998/12/05	04:30:05	292	48	263	172	0	-15.4^*1	----	----	292	C2 C3 195 SXT PHTX DST Java Movie
1998/12/05	11:54:05	96	18	350	234	0	-26.4^*1	----	----	99	C2 C3 195 SXT PHTX DST Java Movie
1998/12/05	19:32:02	340	23	----	---	---	---	----	----	342	C2 C3 195 SXT PHTX DST Java Movie	Poor Event; Only 1 point; Only C2
1998/12/06	03:54:05	331	36	159	119	0	-14.5^*1	----	----	335	C2 C3 195 SXT PHTX DST Java Movie	Poor Event; Only 3 points; Only C2
1998/12/06	05:30:06	95	24	327	205	0	-22.0^*1	----	----	94	C2 C3 195 SXT PHTX DST Java Movie
1998/12/06	10:54:05	118	73	806	640	662	-21.6	----	----	102	C2 C3 195 SXT PHTX DST Java Movie
1998/12/07	15:30:05	327	42	490	497	498	0.6	----	----	331	C2 C3 195 SXT PHTX DST Java Movie
1998/12/08	00:54:05	241	42	258	270	313	1.6^*1	----	----	240	C2 C3 195 SXT PHTX DST Java Movie
1998/12/08	09:30:05	59	111	411	724	623	16.6	----	----	26	C2 C3 195 SXT PHTX DST Java Movie UVCS
1998/12/08	19:04:10	207	74	----	---	---	---	----	----	208	C2 C3 195 SXT PHTX DST Java Movie	Poor Event; Only 1 point; Only C2
1998/12/09	16:30:05	102	21	568	652	1169	47.2^*1	----	----	100	C2 C3 195 SXT PHTX DST Java Movie
1998/12/09	18:30:05	96	14	584	570	547	-2.4	----	----	99	C2 C3 195 SXT PHTX DST Java Movie
1998/12/09	18:30:05	308	52	217	193	0	-8.9^*1	----	----	320	C2 C3 195 SXT PHTX DST Java Movie	Only C2
1998/12/09	21:30:08	313	46	225	261	535	10.3^*1	----	----	318	C2 C3 195 SXT PHTX DST Java Movie
1998/12/10	09:54:05	312	59	299	435	810	26.3	----	----	319	C2 C3 195 SXT PHTX DST Java Movie
1998/12/10	11:30:05	219	5	314	492	563	13.2	----	----	220	C2 C3 195 SXT PHTX DST Java Movie
1998/12/10	15:30:05	27	63	334	289	209	-4.2^*1	----	----	13	C2 C3 195 SXT PHTX DST Java Movie
1998/12/10	18:54:05	60	69	212	339	1281	68.1^*1	----	----	64	C2 C3 195 SXT PHTX DST Java Movie	Only 3 points; Only C2
1998/12/10	19:54:05	332	74	203	173	0	-4.7^*1	----	----	321	C2 C3 195 SXT PHTX DST Java Movie
1998/12/10	23:30:05	50	126	591	641	923	23.4	----	----	41	C2 C3 195 SXT PHTX DST Java Movie	Partial Halo
1998/12/12	12:54:05	124	35	241	212	0	-10.5^*1	----	----	123	SXT PHTX DST Java Movie	Poor Event; Only C2
1998/12/14	05:30:05	194	73	223	260	528	10.2^*1	----	----	201	C2 C3 195 SXT PHTX DST Java Movie	Only C2
1998/12/14	09:54:05	296	5	524	559	752	14.0^*1	----	----	293	C2 C3 195 SXT PHTX DST Java Movie
1998/12/14	15:30:05	90	32	485	523	551	4.4	----	----	87	C2 C3 195 SXT PHTX DST Java Movie
1998/12/15	07:54:05	225	5	----	---	---	---	----	----	230	C2 C3 195 SXT PHTX DST Java Movie	Newly inserted on 2007/10/09; Only 1 point; Only C2
1998/12/15	08:30:05	276	49	207	138	0	-13.7^*1	----	----	277	C2 C3 195 SXT PHTX DST Java Movie
1998/12/15	12:54:06	246	64	197	297	1148	53.4^*1	----	----	243	C2 C3 195 SXT PHTX DST Java Movie	Only 3 points; Only C2
1998/12/15	13:31:55	71	69	392	423	489	4.7	----	----	61	C2 C3 195 SXT PHTX DST Java Movie
1998/12/15	19:31:55	216	9	115	---	---	---	----	----	218	C2 C3 195 SXT PHTX DST Java Movie	Newly inserted on 2007/10/09; Only 2 points; Only C2
1998/12/15	21:00:19	77	60	598	---	---	---	----	----	72	C2 C3 195 SXT PHTX DST Java Movie	Poor Event; Only 2 points; Only C2
1998/12/16	05:30:05	166	70	363	257	0	-21.0	----	----	167	C2 C3 195 SXT PHTX DST Java Movie
1998/12/16	19:31:57	133	82	201	196	0	-1.8^*1	----	----	117	C2 C3 195 SXT PHTX DST Java Movie	Only C2
1998/12/17	08:30:05	Halo	360	302	401	721	19.5^*1	----	----	229	C2 C3 195 SXT PHTX DST Java Movie	Poor Event
1998/12/17	15:30:05	235	42	221	360	980	39.1^*1	----	----	232	C2 C3 195 SXT PHTX DST Java Movie	Only C2
1998/12/17	18:30:05	263	111	434	479	535	5.7	----	----	260	C2 C3 195 SXT PHTX DST Java Movie
1998/12/17	21:54:05	61	38	739	835	1066	30.1^*1	----	----	57	C2 C3 195 SXT PHTX DST Java Movie
1998/12/18	18:09:47	Halo (OA)	360	1749	1789	1776	17.2^*1	----	----	36	C2 C3 195 SXT PHTX DST Java Movie	Only 3 points; Only C3
1998/12/19	08:30:06	31	7	364	483	738	20.8	----	----	34	C2 C3 195 SXT PHTX DST Java Movie
1998/12/19	09:30:14	251	16	247	237	143	-1.9^*1	----	----	249	C2 C3 195 SXT PHTX DST Java Movie
1998/12/19	12:30:05	188	41	155	353	430	7.7	----	----	190	C2 C3 195 SXT PHTX DST Java Movie
1998/12/19	15:30:05	62	7	259	265	307	1.3^*1	----	----	59	C2 C3 195 SXT PHTX DST Java Movie
1998/12/19	20:30:05	63	53	134	103	0	-18.0^*1	----	----	62	C2 C3 195 SXT PHTX DST Java Movie	Only 3 points; Only C2
1998/12/19	20:54:05	44	29	295	318	436	4.9	----	----	45	C2 C3 195 SXT PHTX DST Java Movie UVCS
1998/12/20	05:54:05	277	62	156	191	447	7.6^*1	----	----	269	C2 C3 195 SXT PHTX DST Java Movie	Only C2
1998/12/20	10:30:06	62	54	235	299	407	6.8	----	----	49	C2 C3 195 SXT PHTX DST Java Movie	Only C3
1998/12/20	12:30:19	121	42	363	184	0	-87.0^*1	----	----	99	C2 C3 195 SXT PHTX DST Java Movie	Only 3 points
1998/12/20	17:30:21	272	22	752	625	0	-55.8^*1	----	----	295	C2 C3 195 SXT PHTX DST Java Movie	Poor Event

*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).