• 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] Daily Movies
    and Plots     		Remarks
    1998/05/01 00:58:05 120 44 859 1303 1185 52.6 2.6e+15 9.5e+30 121 C2 C3 195 SXT PHTX DST Java Movie
    1998/05/01 08:27:30 59 25 559 476 0 -20.2 5.6e+14 8.8e+29 62 C2 C3 195 SXT PHTX DST Java Movie
    1998/05/01 10:06:21 97 22 182 --- --- --- ---- ---- 91 C2 C3 195 SXT PHTX DST Java Movie Only 2 points; Only C2
    1998/05/01 23:40:09 Halo (S) 360 585 657 627 8.0 ---- ---- 126 C2 C3 195 SXT PHTX DST Java Movie Only C3
    1998/05/02 05:31:56 Halo (BA) 360 542 527 530 -1.4 ---- ---- 154 C2 C3 195 SXT PHTX DST Java Movie
    1998/05/02 14:06:12 Halo (BA) 360 938 697 871 -28.8 ---- ---- 331 C2 C3 195 SXT PHTX DST Java Movie
    1998/05/02 21:20:36 226 49 338 276 0 -15.3*1 1.0e+15 5.9e+29 221 C2 C3 195 SXT PHTX DST Java Movie
    1998/05/03 03:16:40 281 22 399 375 194 -5.9*1 2.4e+14 1.9e+29 296 C2 C3 195 SXT PHTX DST Java Movie
    1998/05/03 10:29:52 241 74 497 477 453 -2.5 1.2e+15 1.5e+30 239 C2 C3 195 SXT PHTX DST Java Movie
    1998/05/03 16:20:28 289 8 181 229 517 11.2*1 ---- ---- 288 C2 C3 195 SXT PHTX DST Java Movie
    1998/05/03 18:59:52 115 21 345 379 452 4.7 1.9e+14 1.1e+29 102 C2 C3 195 SXT PHTX DST Java Movie
    1998/05/03 22:02:55 317 194 649 675 669 2.5 ---- ---- 302 C2 C3 195 SXT PHTX DST Java Movie Partial Halo
    1998/05/04 00:58:07 270 66 279 198 0 -9.6*1 ---- ---- 278 C2 C3 195 SXT PHTX DST Java Movie Very Poor Event
    1998/05/04 05:28:14 99 50 403 245 0 -16.6*1 6.1e+14 5.0e+29 96 C2 C3 195 SXT PHTX DST Java Movie
    1998/05/04 23:27:06 240 39 338 213 0 -9.3*1 4.1e+14 2.4e+29 242 C2 C3 195 SXT PHTX DST Java Movie Poor Event
    1998/05/05 00:58:23 319 60 218 221 240 0.5*1 1.3e+14 3.1e+28 314 C2 C3 195 SXT PHTX DST Java Movie Poor Event; Only C2
    1998/05/06 00:02:06 274 110 786 696 756 -9.7 6.5e+16 2.0e+32 235 C2 C3 195 SXT PHTX DST Java Movie
    1998/05/06 02:28:31 88 91 375 499 433 5.1 4.5e+16 3.2e+31 59 C2 C3 195 SXT PHTX DST Java Movie
    1998/05/06 08:29:13 309 190 1099 1294 1175 24.5 ---- ---- 294 C2 C3 195 SXT PHTX DST Java Movie Partial Halo
    1998/05/06 09:32:35 328 248 792 953 1024 27.7*1 ---- ---- 253 C2 C3 195 SXT PHTX DST Java Movie Very Poor Event; Partial Halo
    1998/05/07 00:28:14 305 89 218 426 487 9.9 2.4e+16 5.8e+30 309 C2 C3 195 SXT PHTX DST Java Movie
    1998/05/07 01:30:31 87 71 455 462 470 0.9 9.5e+15 9.8e+30 101 C2 C3 195 SXT PHTX DST Java Movie
    1998/05/07 10:29:54 73 53 314 470 419 6.3*1 2.2e+16 1.1e+31 70 C2 C3 195 SXT PHTX DST Java Movie Poor Event
    1998/05/07 11:05:46 270 16 483 372 0 -31.0*1 ---- ---- 261 C2 C3 195 SXT PHTX DST Java Movie Poor Event
    1998/05/07 19:12:53 55 37 607 680 676 6.9*1 2.4e+15*2 4.5e+30*2 52 C2 C3 195 SXT PHTX DST Java Movie Poor Event
    1998/05/08 02:28:32 287 76 371 369 368 -0.1 7.7e+15 5.3e+30 278 C2 C3 195 SXT PHTX DST Java Movie
    1998/05/08 06:27:05 245 75 1265 886 1162 -61.9 4.5e+15 3.6e+31 245 C2 C3 195 SXT PHTX DST Java Movie
    1998/05/08 08:05:49 81 39 334 386 562 10.9*1 2.4e+14 1.3e+29 87 C2 C3 195 SXT PHTX DST Java Movie Poor Event
    1998/05/08 13:01:23 84 28 520 653 950 35.1*1 ---- ---- 84 C2 C3 195 SXT PHTX DST Java Movie Poor Event
    1998/05/08 13:01:23 248 85 432 393 413 -2.0 4.9e+15 4.6e+30 252 C2 C3 195 SXT PHTX DST Java Movie
    1998/05/08 14:32:49 259 80 777 --- --- --- ---- ---- 275 C2 C3 195 SXT PHTX DST Java Movie Poor Event; Only 2 points; Only C2
    1998/05/08 15:04:20 125 27 348 451 583 12.0*1 ---- ---- 117 C2 C3 195 SXT PHTX DST Java Movie
    1998/05/08 18:27:07 102 11 312 290 233 -2.5 ---- ---- 92 C2 C3 195 SXT PHTX DST Java Movie
    1998/05/08 23:10:58 104 91 685 789 842 16.2 1.3e+15 3.0e+30 93 C2 C3 195 SXT PHTX DST Java Movie
    1998/05/09 01:04:39 255 19 118 --- --- --- ---- ---- 255 C2 C3 195 SXT PHTX DST Java Movie Newly inserted on 2006/01/12; Only 2 points; Only C2
    1998/05/09 03:35:58 262 178 2331 1769 2296 -140.5*1 ---- ---- 275 C2 C3 195 SXT PHTX DST Java Movie Only 3 points; Partial Halo
    1998/05/09 15:18:25 228 46 533 525 522 -0.9 1.3e+15 1.8e+30 242 C2 C3 195 SXT PHTX DST Java Movie
    1998/05/09 20:04:56 266 129 1278 1038 1182 -39.2 4.8e+15*2 3.9e+31*2 245 C2 C3 195 SXT PHTX DST Java Movie Partial Halo
    1998/05/10 05:55:25 270 37 371 422 676 16.0*1 3.8e+14 2.6e+29 279 C2 C3 195 SXT PHTX DST Java Movie Poor Event
    1998/05/10 08:29:19 266 17 689 668 649 -3.9*1 ---- ---- 275 C2 C3 195 SXT PHTX DST Java Movie
    1998/05/10 10:30:07 242 80 283 187 0 -15.6*1 ---- ---- 247 C2 C3 195 SXT PHTX DST Java Movie
    1998/05/10 14:07:01 222 64 625 561 601 -4.8 2.4e+15 4.8e+30 248 C2 C3 195 SXT PHTX DST Java Movie
    1998/05/11 02:59:53 280 3 345 288 117 -6.0*1 ---- ---- 287 C2 C3 195 SXT PHTX DST Java Movie
    1998/05/11 05:21:53 278 33 363 355 341 -1.2*1 9.4e+14*2 6.2e+29*2 291 C2 C3 195 SXT PHTX DST Java Movie Only C3
    1998/05/11 14:27:05 287 78 660 781 714 8.9 3.9e+15 8.5e+30 272 C2 C3 195 SXT PHTX DST Java Movie
    1998/05/11 14:27:05 210 83 621 725 803 15.9 1.4e+15 2.7e+30 234 C2 C3 195 SXT PHTX DST Java Movie
    1998/05/11 21:55:22 208 >301 830 787 807 -4.7 ---- ---- 284 C2 C3 195 SXT PHTX DST Java Movie Uncertain Width; Partial Halo
    1998/05/12 03:55:21 61 72 655 859 748 14.3 4.9e+15 1.0e+31 59 C2 C3 195 SXT PHTX DST Java Movie
    1998/05/12 06:27:05 209 79 255 184 0 -15.9 ---- ---- 214 C2 C3 195 SXT PHTX DST Java Movie Only C2
    1998/05/12 08:55:20 210 225 1073 1016 1049 -8.3 ---- ---- 228 C2 C3 195 SXT PHTX DST Java Movie Partial Halo
    1998/05/12 15:55:23 65 8 404 520 489 6.5 ---- ---- 68 C2 C3 195 SXT PHTX DST Java Movie
    1998/05/12 15:55:23 272 56 560 792 835 26.2*1 2.0e+15 3.2e+30 284 C2 C3 195 SXT PHTX DST Java Movie
    1998/05/12 23:55:22 207 267 619 538 585 -6.4 ---- ---- 310 C2 C3 195 SXT PHTX DST Java Movie Partial Halo
    1998/05/13 04:26:06 17 43 347 266 0 -10.4*1 2.1e+14 1.2e+29 20 C2 C3 195 SXT PHTX DST Java Movie Poor Event
    1998/05/13 05:27:08 254 36 983 894 937 -11.2 7.8e+14 3.8e+30 262 C2 C3 195 SXT PHTX DST Java Movie
    1998/05/13 12:55:19 271 5 362 165 0 -62.9*1 ---- ---- 276 C2 C3 195 SXT PHTX DST Java Movie Poor Event
    1998/05/13 15:27:06 276 23 398 452 490 5.2*1 2.8e+14 2.2e+29 284 C2 C3 195 SXT PHTX DST Java Movie
    1998/05/13 19:50:50 339 59 238 280 298 2.2 3.9e+14 1.1e+29 340 C2 C3