• 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
    1999/07/01 08:30:05 90 27 671 580 516 -13.3*1 4.8e+14 1.1e+30 78 C2 C3 195 SXT PHTX DST Java Movie
    1999/07/01 19:31:31 302 267 621 541 472 -11.4 ---- ---- 326 C2 C3 195 SXT PHTX DST Java Movie width difficult to determine; Partial Halo
    1999/07/01 22:30:05 320 22 419 342 195 -9.1*1 5.5e+14 4.8e+29 325 C2 C3 195 SXT PHTX DST Java Movie
    1999/07/02 04:30:05 311 26 711 741 721 2.5 5.7e+14 1.5e+30 315 C2 C3 195 SXT PHTX DST Java Movie
    1999/07/02 04:30:05 68 70 535 461 436 -8.2*1 7.0e+14 1.0e+30 68 C2 C3 195 SXT PHTX DST Java Movie
    1999/07/02 13:31:26 245 51 400 372 239 -5.5*1 6.2e+14 5.0e+29 243 C2 C3 195 SXT PHTX DST Java Movie
    1999/07/02 14:30:06 315 40 458 433 428 -2.1*1 8.8e+14 9.3e+29 321 C2 C3 195 SXT PHTX DST Java Movie
    1999/07/02 16:30:05 221 121 285 285 284 -0.0*1 4.5e+14*2 1.8e+29*2 232 C2 C3 195 SXT PHTX DST Java Movie Poor Event; Partial Halo
    1999/07/02 17:30:05 39 127 410 500 453 4.2 8.2e+15*2 6.9e+30*2 51 C2 C3 195 SXT PHTX DST Java Movie Partial Halo
    1999/07/02 21:32:40 221 49 173 128 0 -3.0*1 ---- ---- 215 C2 C3 195 SXT PHTX DST Java Movie
    1999/07/03 09:06:24 308 42 362 300 224 -5.4*1 9.7e+14 6.3e+29 320 C2 C3 195 SXT PHTX DST Java Movie
    1999/07/03 11:06:05 319 71 465 508 517 3.8*1 1.2e+15 1.3e+30 328 C2 C3 195 SXT PHTX DST Java Movie
    1999/07/03 17:30:05 309 81 361 380 411 2.2*1 3.1e+15 2.0e+30 315 C2 C3 195 SXT PHTX DST Java Movie Poor Event
    1999/07/03 19:54:05 301 139 536 588 560 3.1 8.4e+15*2 1.2e+31*2 303 C2 C3 195 SXT PHTX DST Java Movie Partial Halo
    1999/07/03 21:54:05 89 56 229 221 176 -1.1*1 5.0e+14 1.3e+29 77 C2 C3 195 SXT PHTX DST Java Movie Poor Event
    1999/07/04 00:30:05 352 51 225 223 212 -0.3*1 4.7e+14 1.2e+29 358 C2 C3 195 SXT PHTX DST Java Movie
    1999/07/04 05:30:09 322 65 335 341 341 0.4 1.7e+15 9.5e+29 326 C2 C3 195 SXT PHTX DST Java Movie
    1999/07/04 12:06:05 66 94 458 401 183 -9.5*1 1.1e+15 1.2e+30 74 C2 C3 195 SXT PHTX DST Java Movie Poor Event
    1999/07/04 17:54:05 302 43 372 350 327 -2.0 4.0e+14 2.8e+29 314 C2 C3 195 SXT PHTX DST Java Movie
    1999/07/05 02:54:05 284 190 670 898 770 20.8 ---- ---- 302 C2 C3 195 SXT PHTX DST Java Movie Partial Halo
    1999/07/05 06:30:05 213 13 723 760 784 6.2*1 3.9e+14 1.0e+30 213 C2 C3 195 SXT PHTX DST Java Movie
    1999/07/05 11:30:05 344 36 411 421 435 1.2*1 5.0e+14 4.3e+29 339 C2 C3 195 SXT PHTX DST Java Movie Poor Event
    1999/07/05 13:54:05 57 96 466 410 379 -5.5*1 2.0e+15 2.1e+30 36 C2 C3 195 SXT PHTX DST Java Movie Poor Event
    1999/07/06 06:30:05 83 86 332 279 0 -8.8*1 1.2e+15 6.4e+29 73 C2 C3 195 SXT PHTX DST Java Movie Poor Event
    1999/07/06 12:30:07 68 119 604 704 651 7.0 6.2e+15 1.1e+31 56 C2 C3 195 SXT PHTX DST Java Movie
    1999/07/06 17:06:05 Halo (OA) 360 899 696 833 -21.3 ---- ---- 358 C2 C3 195 SXT PHTX DST Java Movie
    1999/07/06 21:30:06 87 54 391 402 411 1.1*1 1.4e+15 1.1e+30 77 C2 C3 195 SXT PHTX DST Java Movie
    1999/07/07 01:31:27 347 25 393 352 339 -3.1*1 3.9e+14 3.0e+29 349 C2 C3 195 SXT PHTX DST Java Movie
    1999/07/07 06:30:34 27 82 651 550 544 -11.3 1.2e+15 2.5e+30 354 C2 C3 195 SXT PHTX DST Java Movie
    1999/07/07 06:54:06 244 33 371 365 332 -1.4*1 9.2e+13 6.4e+28 235 C2 C3 195 SXT PHTX DST Java Movie Poor Event
    1999/07/07 12:54:05 245 32 182 160 0 -3.1*1 2.8e+13 4.6e+27 243 C2 C3 195 SXT PHTX DST Java Movie difficul to determine begining time; Poor Event
    1999/07/07 19:31:25 303 163 547 548 547 0.1 ---- ---- 295 C2 C3 195 SXT PHTX DST Java Movie Partial Halo
    1999/07/08 03:06:05 15 32 498 452 253 -9.9*1 1.8e+14 2.3e+29 15 C2 C3 195 SXT PHTX DST Java Movie
    1999/07/08 03:06:05 82 43 434 382 229 -7.8*1 2.4e+14 2.2e+29 71 C2 C3 195 SXT PHTX DST Java Movie
    1999/07/08 10:54:05 79 89 418 412 410 -0.5 3.0e+15 2.7e+30 88 C2 C3 195 SXT PHTX DST Java Movie
    1999/07/09 00:06:05 92 55 282 230 0 -20.6*1 9.3e+13*2 3.7e+28*2 94 C2 C3 195 SXT PHTX DST Java Movie Poor Event; Only C2
    1999/07/09 01:31:27 192 36 260 174 0 -14.6*1 3.2e+14 1.1e+29 200 C2 C3 195 SXT PHTX DST Java Movie Poor Event
    1999/07/09 05:54:05 309 66 533 817 855 26.8*1 2.0e+15 2.8e+30 304 C2 C3 195 SXT PHTX DST Java Movie
    1999/07/09 18:06:05 252 51 213 118 0 -9.2*1 8.1e+14 1.8e+29 243 C2 C3 195 SXT PHTX DST Java Movie
    1999/07/09 18:54:05 57 127 294 295 299 0.1*1 ---- ---- 59 C2 C3 195 SXT PHTX DST Java Movie Partial Halo
    1999/07/10 00:30:05 74 107 432 367 151 -9.4 9.4e+14 8.8e+29 66 C2 C3 195 SXT PHTX DST Java Movie
    1999/07/10 04:31:01 98 66 476 509 508 2.8 7.2e+14 8.1e+29 116 C2 C3 195 SXT PHTX DST Java Movie
    1999/07/10 20:06:05 79 116 326 367 621 12.6*1 4.4e+14*2 2.3e+29*2 117 C2 C3 195 SXT PHTX DST Java Movie Poor Event; Only C2
    1999/07/10 21:30:08 222 42 932 955 950 3.8 1.4e+15 6.2e+30 223 C2 C3 195 SXT PHTX DST Java Movie
    1999/07/11 01:31:25 81 128 318 235 0 -16.9*1 4.2e+14*2 2.1e+29*2 52 C2 C3 195 SXT PHTX DST Java Movie Poor Event; Partial Halo
    1999/07/11 13:54:05 236 85 389 306 0 -25.4*1 2.7e+14 2.0e+29 226 C2 C3 195 SXT PHTX DST Java Movie Poor Event
    1999/07/11 21:30:08 241 65 395 391 363 -1.1*1 ---- ---- 239 C2 C3 195 SXT PHTX DST Java Movie
    1999/07/12 00:54:05 79 48 627 759 840 22.2*1 4.7e+14 9.2e+29 86 C2 C3 195 SXT PHTX DST Java Movie
    1999/07/12 00:54:05 265 100 277 259 217 -1.8 1.0e+14 3.8e+28 233 C2 C3 195 SXT PHTX DST Java Movie
    1999/07/12 06:54:05 290 116 343 293 0 -14.8*1 5.2e+14 3.1e+29 242 C2 C3 195 SXT PHTX DST Java Movie Poor Event
    1999/07/12 07:54:05 139 123 866 847 836 -4.1 1.1e+15*2 4.2e+30*2 130 C2 C3 195 SXT PHTX DST Java Movie Partial Halo
    1999/07/12 17:30:05 339 91 359 383 409 2.2 1.8e+15 1.2e+30 325 C2 C3 195 SXT PHTX DST Java Movie
    1999/07/12 18:30:05 262 76 452 420 368 -4.1 2.3e+15 2.4e+30 243 C2 C3 195 SXT PHTX DST Java Movie
    1999/07/13 01:54:06 248 67 257 208 0 -28.2*1 4.4e+13*2 1.4e+28*2 243 C2 C3 195 SXT PHTX DST Java Movie Poor Event; Only C2
    1999/07/13 04:30:05 236 38 331 250 0 -24.5*1 ---- ---- 243 C2 C3 195 SXT PHTX DST Java Movie Newly inserted on 2005/12/21
    1999/07/13 05:30:06 234 39 397 354 293 -4.4 ---- ---- 241 C2 C3 195 SXT PHTX DST Java Movie Newly inserted on 2005/12/21
    1999/07/13 06:06:06 46 8 1006 845 0 -141.6*1 ---- ---- 47 C2 C3 195 SXT PHTX DST Java Movie Newly inserted on 2005/12/21; Only 3 points
    1999/07/13 06:30:05 268 38