• 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
    1998/04/01 13:10:10 106 31 476 371 233 -13.0*1 2.8e+14 3.1e+29 112 C2 C3 195 SXT PHTX DST Java Movie
    1998/04/01 15:12:39 197 47 330 285 113 -5.8*1 2.5e+14 1.4e+29 192 C2 C3 195 SXT PHTX DST Java Movie
    1998/04/02 06:43:13 263 65 277 302 405 4.3 7.0e+14 2.7e+29 251 C2 C3 195 SXT PHTX DST Java Movie
    1998/04/02 18:30:45 149 48 155 160 204 0.8*1 3.0e+14 3.6e+28 143 C2 C3 195 SXT PHTX DST Java Movie Poor Event; Only C2
    1998/04/03 04:23:39 261 72 482 395 334 -9.4 1.1e+15 1.3e+30 265 C2 C3 195 SXT PHTX DST Java Movie
    1998/04/03 20:12:14 258 70 521 350 354 -17.1 1.5e+15 2.1e+30 258 C2 C3 195 SXT PHTX DST Java Movie
    1998/04/04 02:46:54 18 58 237 257 271 1.1 1.9e+14 5.2e+28 22 C2 C3 195 SXT PHTX DST Java Movie
    1998/04/04 05:47:58 57 43 95 84 0 -1.5 ---- ---- 55 C2 C3 195 SXT PHTX DST Java Movie Newly inserted on 2005/10/05
    1998/04/04 05:47:58 261 60 197 192 169 -0.5*1 4.1e+13 7.9e+27 263 C2 C3 195 SXT PHTX DST Java Movie
    1998/04/04 15:41:47 91 43 524 539 533 1.1 4.2e+14 5.8e+29 88 C2 C3 195 SXT PHTX DST Java Movie
    1998/04/04 18:13:18 255 66 402 465 516 6.3 7.1e+14 5.7e+29 253 C2 C3 195 SXT PHTX DST Java Movie
    1998/04/04 23:29:01 111 18 420 404 379 -2.0 2.4e+14 2.1e+29 107 C2 C3 195 SXT PHTX DST Java Movie
    1998/04/05 01:05:44 247 39 192 182 122 -1.1*1 ---- ---- 259 C2 C3 195 SXT PHTX DST Java Movie Poor Event; Only 3 points
    1998/04/05 04:40:34 106 7 334 307 167 -4.4 ---- ---- 104 C2 C3 195 SXT PHTX DST Java Movie
    1998/04/05 15:51:34 238 24 473 421 226 -10.4*1 6.2e+13 7.0e+28 259 C2 C3 195 SXT PHTX DST Java Movie
    1998/04/06 02:00:55 252 64 404 484 491 5.8*1 2.2e+15 1.8e+30 245 C2 C3 195 SXT PHTX DST Java Movie
    1998/04/06 05:04:50 248 62 878 718 811 -16.9 2.6e+15 9.9e+30 256 C2 C3 195 SXT PHTX DST Java Movie
    1998/04/06 08:49:52 115 67 162 170 247 1.6*1 2.4e+14 3.2e+28 133 C2 C3 195 SXT PHTX DST Java Movie Poor Event; Only C2
    1998/04/06 18:33:28 111 14 390 226 0 -41.4*1 ---- ---- 112 C2 C3 195 SXT PHTX DST Java Movie Poor Event; Only 3 points
    1998/04/06 23:27:05 94 24 385 236 0 -38.0*1 ---- ---- 104 C2 C3 195 SXT PHTX DST Java Movie Poor Event
    1998/04/07 10:14:19 90 20 395 294 0 -20.4*1 5.9e+13*2 4.6e+28*2 100 C2 C3 195 SXT PHTX DST Java Movie Poor Event
    1998/04/07 12:18:35 90 13 224 220 201 -0.5*1 ---- ---- 91 C2 C3 195 SXT PHTX DST Java Movie Poor Event; Only 3 points
    1998/04/07 19:59:47 96 7 360 352 268 -2.7*1 ---- ---- 95 C2 C3 195 SXT PHTX DST Java Movie
    1998/04/08 03:27:39 78 44 441 692 638 15.2 1.8e+15 1.7e+30 74 C2 C3 195 SXT PHTX DST Java Movie
    1998/04/08 03:59:20 290 27 845 839 840 -0.9 9.2e+14 3.3e+30 284 C2 C3 195 SXT PHTX DST Java Movie
    1998/04/08 06:37:46 249 41 197 293 910 34.0*1 ---- ---- 254 C2 C3 195 SXT PHTX DST Java Movie Poor Event; Only 3 points; Only C2
    1998/04/08 06:37:46 12 56 170 204 256 2.0*1 2.9e+14 4.2e+28 20 C2 C3 195 SXT PHTX DST Java Movie Poor Event
    1998/04/08 18:41:11 286 56 435 615 527 8.8 1.9e+15 1.8e+30 283 C2 C3 195 SXT PHTX DST Java Movie
    1998/04/08 20:05:30 79 17 232 214 124 -2.0*1 ---- ---- 84 C2 C3 195 SXT PHTX DST Java Movie
    1998/04/09 06:44:47 30 39 773 843 849 9.6 6.5e+14 2.0e+30 43 C2 C3 195 SXT PHTX DST Java Movie
    1998/04/09 09:06:50 241 64 291 330 325 1.8 5.6e+14 2.4e+29 236 C2 C3 195 SXT PHTX DST Java Movie
    1998/04/09 10:35:17 282 35 221 307 847 28.6*1 ---- ---- 288 C2 C3 195 SXT PHTX DST Java Movie Poor Event; Only 3 points; Only C2
    1998/04/10 01:55:05 97 67 539 397 450 -11.7 1.4e+15 2.0e+30 95 C2 C3 195 SXT PHTX DST Java Movie
    1998/04/10 06:55:05 321 58 124 150 217 1.6*1 1.3e+14 9.8e+27 328 C2 C3 195 SXT PHTX DST Java Movie
    1998/04/10 18:00:33 291 40 112 163 211 1.8*1 5.1e+14 3.2e+28 292 C2 C3 195 SXT PHTX DST Java Movie Poor Event
    1998/04/10 18:51:10 218 17 181 164 0 -4.3*1 8.4e+13*2 1.4e+28*2 222 C2 C3 195 SXT PHTX DST Java Movie Poor Event; Only C2
    1998/04/10 22:22:16 81 41 155 274 401 7.3*1 6.6e+14 7.9e+28 84 C2 C3 195 SXT PHTX DST Java Movie Poor Event
    1998/04/11 04:26:05 135 67 193 154 0 -14.9*1 6.0e+13*2 1.1e+28*2 121 C2 C3 SXT PHTX DST Java Movie Poor Event; Only C2
    1998/04/11 08:55:05 127 72 198 171 0 -7.5*1 ---- ---- 131 C2 C3 SXT PHTX DST Java Movie Only C2
    1998/04/11 22:27:05 73 14 417 312 0 -17.9*1 1.3e+14 1.1e+29 77 C2 C3 SXT PHTX DST Java Movie Poor Event
    1998/04/12 12:55:05 108 117 565 436 486 -10.3 2.5e+15 4.0e+30 70 C2 C3 PHTX DST Java Movie
    1998/04/12 18:55:05 277 59 370 242 0 -26.0*1 1.8e+14 1.2e+29 265 C2 C3 PHTX DST Java Movie Poor Event
    1998/04/12 23:27:05 262 47 565 469 193 -17.2*1 3.5e+14 5.6e+29 267 C2 C3 PHTX DST Java Movie
    1998/04/13 04:26:05 113 123 468 499 489 2.0 7.8e+14*2 8.5e+29*2 66 C2 C3 SXT PHTX DST Java Movie Partial Halo
    1998/04/13 16:27:06 292 29 172 161 0 -6.4*1 ---- ---- 295 C2 C3 SXT PHTX DST Java Movie Only 3 points; Only C2
    1998/04/13 18:27:05 212 71 231 195 0 -14.1*1 ---- ---- 188 C2 C3 SXT PHTX DST Java Movie Poor Event; Only C2
    1998/04/14 05:26:22 92 91 918 1179 1062 27.7 6.3e+15 2.7e+31 58 C2 C3 195 SXT PHTX DST Java Movie
    1998/04/15 07:55:05 335 49 691 611 666 -5.9 3.5e+15 8.4e+30 337 C2 C3 195 SXT PHTX DST Java Movie
    1998/04/15 13:55:05 339 48 589 520 536 -6.9 7.4e+14 1.3e+30 328 C2 C3 195 SXT PHTX DST Java Movie
    1998/04/15 17:55:05 341 51 445 431 421 -1.4 4.0e+14 4.0e+29 335 C2 C3 195 SXT PHTX DST Java Movie
    1998/04/16 01:55:05 336 32 487 507 495 1.1 1.2e+15 1.4e+30 325 C2 C3 195 SXT PHTX DST Java Movie
    1998/04/16 12:55:05 68 40 645 764 763 13.9*1 4.1e+14 8.5e+29 64 C2 C3 195 SXT PHTX DST Java Movie
    1998/04/16 16:55:05 297 49 470 495 495 2.0*1 7.4e+14 8.1e+29 292 C2 C3 195 SXT PHTX DST Java Movie
    1998/04/16 18:27:05 217 87 583 758 740 15.5*1 ---- ---- 219 C2 C3 195 SXT PHTX DST Java Movie Newly inserted on 2006/01/12; Poor Event
    1998/04/16 20:38:37 236 129 586 563 582 -1.8*1 4.2e+15*2 7.3e+30*2 217 C2 C3 195 SXT PHTX DST Java Movie Only C3; Partial Halo
    1998/04/16 23:02:55 291 65 488 487 488 -0.1*1 1.5e+15 1.7e+30 293 C2 C3 195 SXT PHTX DST Java Movie
    1998/04/17 07:47:25 219 41 301 460 591 15.8*1 ---- ---- 214 C2 C3 195 SXT PHTX DST Java Movie Only C3
    1998/04/18 21:36:12 300 66 512 524 514 1.3 6.4e+15 8.4e+30 304 C2 C3 195 SXT PHTX DST Java Movie