• 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
    2008/05/01 06:18:04 81 24 369 170 0 -21.9*1 1.0e+14 6.9e+28 94 PHTX DST Java Movie Very Poor Event; Only C3
    2008/05/01 16:30:05 89 18 178 199 218 1.2*1 1.7e+14 2.7e+28 91 PHTX DST Java Movie Very Poor Event
    2008/05/01 19:31:37 89 49 130 96 0 -1.3*1 5.4e+14 4.6e+28 89 PHTX DST Java Movie Poor Event
    2008/05/02 06:30:04 292 21 124 176 545 12.1*1 1.3e+13 1.0e+27 291 PHTX DST Java Movie Very Poor Event; Only C2
    2008/05/02 10:06:04 226 47 176 199 197 0.6*1 6.6e+13 1.0e+28 235 PHTX DST Java Movie Poor Event
    2008/05/02 19:31:38 84 28 191 213 221 0.8*1 1.9e+14 3.4e+28 85 PHTX DST Java Movie Poor Event
    2008/05/03 04:30:04 227 15 346 361 359 0.8*1 ---- ---- 234 PHTX DST Java Movie Poor Event
    2008/05/03 10:33:58 193 7 205 --- --- --- 2.4e+12*2 5.0e+26*2 198 PHTX DST Java Movie only two points; Very Poor Event; Only 2 points; Only C2
    2008/05/03 18:54:04 240 18 267 305 452 7.5*1 9.0e+12 3.2e+27 245 PHTX DST Java Movie Very Poor Event
    2008/05/04 04:06:04 296 11 255 290 329 3.0*1 2.5e+13 8.1e+27 291 PHTX DST Java Movie Very Poor Event
    2008/05/04 07:31:40 240 6 215 177 0 -5.7*1 7.0e+12 1.6e+27 248 PHTX DST Java Movie Very Poor Event
    2008/05/04 11:30:04 226 7 513 738 2130 197.5*1 5.4e+12*2 7.2e+27*2 233 PHTX DST Java Movie Very Poor Event; Only 3 points; Only C2
    2008/05/05 09:54:04 237 8 201 110 0 -23.7*1 1.4e+13 2.9e+27 241 PHTX DST Java Movie Very Poor Event; Only C2
    2008/05/05 09:54:04 288 18 169 193 226 1.2*1 6.4e+13 9.1e+27 290 PHTX DST Java Movie Poor Event
    2008/05/05 19:31:38 244 17 309 331 391 3.0*1 5.3e+13 2.5e+28 245 PHTX DST Java Movie Very Poor Event
    2008/05/06 11:54:05 350 6 205 331 1269 68.1*1 3.2e+12*2 6.7e+26*2 348 PHTX DST Java Movie Very Poor Event; Only C2
    2008/05/06 14:30:04 235 28 288 325 443 5.7*1 3.2e+13 1.3e+28 240 PHTX DST Java Movie Poor Event
    2008/05/06 16:54:04 292 27 141 225 250 2.4*1 2.0e+14 2.0e+28 289 PHTX DST Java Movie Very Poor Event
    2008/05/08 06:54:04 231 9 356 569 1473 94.8*1 1.3e+13*2 8.3e+27*2 236 PHTX DST Java Movie Poor Event; Only C2
    2008/05/08 16:30:04 231 5 323 200 0 -71.5*1 3.7e+12*2 1.9e+27*2 235 PHTX DST Java Movie Very Poor Event; Only C2
    2008/05/08 18:30:04 108 11 310 232 0 -11.9*1 2.1e+13 1.0e+28 109 PHTX DST Java Movie Poor Event
    2008/05/09 00:54:05 269 10 208 217 226 0.5*1 2.0e+13 4.4e+27 274 PHTX DST Java Movie Very Poor Event
    2008/05/09 07:31:37 108 6 177 192 320 3.1*1 2.5e+13 4.0e+27 113 PHTX DST Java Movie Very Poor Event; Only C2
    2008/05/09 13:30:05 41 11 550 438 0 -98.9*1 7.6e+12*2 1.1e+28*2 42 PHTX DST Java Movie Very Poor Event; Only 3 points; Only C2
    2008/05/09 20:30:04 244 8 295 481 1927 156.8*1 1.4e+12*2 6.3e+26*2 249 PHTX DST Java Movie Very Poor Event; Only 3 points; Only C2
    2008/05/10 00:30:06 58 13 30 35 121 0.6*1 1.8e+14 8.2e+26 60 PHTX DST Java Movie Very Poor Event; Only C2
    2008/05/10 03:54:07 52 9 164 202 321 3.7*1 1.9e+14 2.5e+28 57 PHTX DST Java Movie Poor Event
    2008/05/10 03:54:07 100 10 235 84 0 -54.6*1 2.8e+13*2 7.8e+27*2 103 PHTX DST Java Movie Very Poor Event; Only 3 points; Only C2
    2008/05/10 15:54:04 107 8 379 347 0 -18.5*1 6.3e+13*2 4.5e+28*2 109 PHTX DST Java Movie Very Poor Event; Only C2
    2008/05/10 16:54:04 102 27 464 356 0 -15.2*1 4.6e+14 5.0e+29 107 PHTX DST Java Movie
    2008/05/11 00:54:04 95 10 416 355 0 -32.7*1 6.5e+13*2 5.6e+28*2 99 PHTX DST Java Movie Poor Event; Only 3 points; Only C2
    2008/05/11 02:18:05 93 17 429 168 0 -54.0*1 8.1e+13 7.5e+28 97 PHTX DST Java Movie Poor Event
    2008/05/11 04:30:04 58 7 288 384 952 36.1*1 2.9e+13*2 1.2e+28*2 59 PHTX DST Java Movie Very Poor Event; Only 3 points; Only C2
    2008/05/11 05:30:04 12 9 427 665 2219 210.3*1 1.0e+13*2 9.1e+27*2 15 PHTX DST Java Movie Very Poor Event; Only 3 points; Only C2
    2008/05/11 07:31:37 59 16 195 226 269 1.9*1 1.6e+14 3.1e+28 66 PHTX DST Java Movie Very Poor Event
    2008/05/11 11:06:15 356 6 364 264 0 -69.6*1 5.6e+12*2 3.7e+27*2 356 PHTX DST Java Movie Very Poor Event; Only 3 points; Only C2
    2008/05/11 11:30:04 239 6 456 637 1924 160.3*1 2.3e+12*2 2.4e+27*2 247 PHTX DST Java Movie Very Poor Event; Only 3 points; Only C2
    2008/05/11 20:30:04 91 9 136 178 540 11.9*1 3.6e+13 3.4e+27 95 PHTX DST Java Movie Very Poor Event; Only C2
    2008/05/11 23:54:05 65 13 233 212 0 -3.5*1 8.4e+12 2.3e+27 69 PHTX DST Java Movie Very Poor Event
    2008/05/12 08:54:04 91 8 119 99 0 -1.5*1 4.0e+13 2.9e+27 93 PHTX DST Java Movie Very Poor Event
    2008/05/13 07:31:36 91 8 193 196 235 0.8*1 2.4e+13 4.6e+27 92 PHTX DST Java Movie Poor Event; Only C2
    2008/05/13 18:54:04 170 4 301 293 0 -4.6*1 6.3e+12*2 2.9e+27*2 169 PHTX DST Java Movie Very Poor Event; Only C2
    2008/05/13 23:30:04 218 7 142 --- --- --- 1.1e+12*2 1.1e+26*2 225 PHTX DST Java Movie only two points; Very Poor Event; Only 2 points; Only C2
    2008/05/14 18:06:04 120 10 296 291 178 -2.8*1 8.2e+12*2 3.6e+27*2 117 PHTX DST Java Movie Poor Event; Only C2
    2008/05/14 21:30:04 119 9 277 317 735 22.4*1 ---- ---- 118 PHTX DST Java Movie Poor Event; Only C2
    2008/05/15 04:30:04 132 50 219 422 643 17.4*1 1.9e+14 4.6e+28 124 PHTX DST Java Movie Poor Event
    2008/05/15 06:30:04 83 24 431 497 568 7.8*1 3.0e+14 2.8e+29 89 PHTX DST Java Movie
    2008/05/16 04:54:04 114 26 180 249 430 7.1*1 1.1e+14 1.8e+28 116 PHTX DST Java Movie Poor Event
    2008/05/16 09:06:04 120 15 244 297 367 4.1*1 1.5e+14 4.3e+28 116 PHTX DST Java Movie Poor Event
    2008/05/16 13:30:04 274 41 136 87 0 -7.5*1 1.2e+14 1.1e+28 272 PHTX DST Java Movie Very Poor Event; Only C2
    2008/05/16 15:30:04 123 15 167 147 0 -5.7*1 3.2e+13 4.4e+27 119 PHTX DST Java Movie Very Poor Event; Only C2
    2008/05/17 10:36:04 119 123 630 562 601 -4.9 6.9e+14*2 1.4e+30*2 94 PHTX DST Java Movie Partial Halo
    2008/05/21 23:12:04 111 16 171 184 253 1.8*1 7.0e+12 1.0e+27 108 PHTX DST Java Movie Very Poor Event
    2008/05/22 01:36:04 130 42 150 196 293 3.1*1 4.7e+13 5.3e+27 135 PHTX DST Java Movie Very Poor Event
    2008/05/22 23:30:04 296 10 392 756 2577 318.8*1 5.0e+12*2 3.8e+27*2 295 PHTX DST Java Movie Very Poor Event; Only 3 points; Only C2
    2008/05/23 14:54:04 236 48 225 430 417 7.6*1 1.0e+14 2.6e+28 238 PHTX DST Java Movie
    2008/05/24 20:58:38 187 4 210 258 837 27.8*1 2.5e+11*2 5.4e+25*2 192 PHTX DST Java Movie Very Poor Event; Only 3 points; Only C2
    2008/05/24 20:58:38 83 65 65 176 203 1.7*1 4.7e+14 9.9e+27 87 PHTX DST Java Movie Very Poor Event
    2008/05/25 03:30:10 297 16 280 301 306 1.1*1 1.0e+14 3.9e+28 295 PHTX DST Java Movie Poor Event
    2008/05/25 10:34:04 294 18 238 282 337 3.1*1 6.0e+13 1.7e+28 298 PHTX DST Java Movie Poor Event
    2008/05/25 19:54:04 82 32 215 352 310 3.7*1 3.4e+14 7.9e+28 87 PHTX DST Java Movie Poor Event
    2008/05/26 12:06:04 66 15 263 315 443 6.7*1 6.6e+13 2.3e+28 72 PHTX DST Java Movie Very Poor Event
    2008/05/27 01:54:04 281 8 369 391 603 10.0*1 ---- ---- 280 PHTX DST Java Movie Very Poor Event; Only C2
    2008/05/27 04:06:04 255 24 445 376 0 -15.6*1 3.7e+13 3.7e+28 260 PHTX DST Java Movie Poor Event
    2008/05/27 06:54:04 89 7 244 279 464 8.2*1 9.1e+12 2.7e+27 83 PHTX DST Java Movie Very Poor Event
    2008/05/27 07:31:43 247 34 477 555 687 13.3*1 1.8e+14 2.0e+29 264 PHTX DST Java Movie
    2008/05/27 18:06:04 293 12 215 239 395 5.6*1 3.8e+12 8.7e+26 293 PHTX DST Java Movie Very Poor Event
    2008/05/28 05:30:05 102 31 166 179 389 5.2*1 1.2e+13 1.7e+27 97 PHTX DST Java Movie Very Poor Event; Only C2
    2008/05/29 18:06:04 328 7 196 372 1274 67.4*1 4.8e+11*2 9.2e+25*2 325 PHTX DST Java Movie Very Poor Event; Only 3 points; Only C2
    2008/05/30 02:54:28 85 16 129 44 0 -47.2*1 ---- ---- 84 PHTX DST Java Movie Very Poor Event; Only C2
    2008/05/30 09:30:04 272 5 256 361 1495 92.9*1 1.2e+13*2 3.8e+27*2 277 PHTX DST Java Movie Very Poor Event; Only 3 points; Only C2
    2008/05/30 23:30:04 283 17 259 358 776 23.8*1 1.7e+12 5.7e+26 288 PHTX DST Java Movie Very Poor Event; Only C2
    2008/05/31 03:54:08 168 6 255 --- --- --- 1.2e+12*2 3.8e+26*2 163 PHTX DST Java Movie Very Poor Event; Only 2 points; 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).