• 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
    1997/12/01 15:57:07 94 46 204 113 0 -46.7*1 9.6e+14*2 2.0e+29*2 87 C2 C3 SXT PHTX DST Java Movie Poor Event; Only 3 points; Only C3
    1997/12/01 19:08:39 84 53 482 602 729 16.3*1 ---- ---- 77 C2 C3 SXT PHTX DST Java Movie
    1997/12/02 16:43:27 77 32 155 147 113 -0.6*1 1.6e+14 1.9e+28 87 C2 C3 195 SXT PHTX DST Java Movie Poor Event
    1997/12/02 23:27:05 81 62 258 289 381 4.1 ---- ---- 83 C2 C3 195 SXT PHTX DST Java Movie
    1997/12/05 08:27:05 275 98 414 576 512 8.1 4.0e+15 3.4e+30 278 C2 C3 195 SXT PHTX DST Java Movie
    1997/12/06 10:27:05 317 223 397 567 525 9.0 2.0e+16*2 1.6e+31*2 296 C2 C3 195 SXT PHTX DST Java Movie Partial Halo
    1997/12/07 00:55:05 242 22 551 688 687 13.3 ---- ---- 240 C2 C3 195 SXT PHTX DST Java Movie Newly inserted on 2006/01/12
    1997/12/07 04:26:25 335 53 403 545 506 7.6*1 ---- ---- 334 C2 C3 195 SXT PHTX DST Java Movie Newly inserted on 2006/01/12
    1997/12/08 00:30:42 262 41 231 277 369 4.4 ---- ---- 260 C2 C3 195 SXT PHTX DST Java Movie Newly inserted on 2006/01/12
    1997/12/08 07:55:05 193 4 551 --- --- --- ---- ---- 196 C2 C3 195 SXT PHTX DST Java Movie Newly inserted on 2006/01/12; Poor Event; Only 2 points; Only C2
    1997/12/09 12:27:05 253 66 333 204 0 -12.5*1 1.3e+15 7.2e+29 248 C2 C3 195 SXT PHTX DST Java Movie UVCS
    1997/12/10 18:38:05 283 62 337 434 972 39.2*1 1.2e+14*2 6.9e+28*2 290 C2 C3 195 SXT PHTX DST Java Movie Poor Event; Only 3 points; Only C2
    1997/12/11 07:27:05 88 51 201 265 306 3.3*1 4.4e+14 8.8e+28 93 C2 C3 195 SXT PHTX DST Java Movie Poor Event
    1997/12/11 19:57:05 46 34 231 104 0 -39.5*1 6.8e+13*2 1.8e+28*2 52 C2 C3 195 SXT PHTX DST Java Movie Poor Event; Only 3 points
    1997/12/12 01:27:08 291 80 211 177 0 -2.8*1 2.9e+14 6.4e+28 268 C2 C3 195 SXT PHTX DST Java Movie UVCS Poor Event
    1997/12/12 07:27:05 273 87 199 222 344 3.6*1 1.7e+14 3.3e+28 268 C2 C3 195 SXT PHTX DST Java Movie Only C2
    1997/12/13 00:26:25 278 73 191 --- --- --- ---- ---- 283 C2 C3 195 SXT PHTX DST Java Movie UVCS Poor Event; Only 2 points; Only C2
    1997/12/13 15:22:23 296 32 238 --- --- --- ---- ---- 285 C2 C3 195 SXT PHTX DST Java Movie Poor Event; Only 2 points; Only C2
    1997/12/14 02:03:50 93 72 508 655 600 9.5 4.6e+15 6.0e+30 103 C2 C3 195 SXT PHTX DST Java Movie UVCS
    1997/12/14 02:03:50 280 81 259 269 265 0.4*1 1.6e+15 5.4e+29 293 C2 C3 195 SXT PHTX DST Java Movie
    1997/12/15 11:27:05 93 53 159 261 917 39.1*1 1.3e+14*2 1.6e+28*2 90 C2 C3 195 SXT PHTX DST Java Movie Very Poor Event; Only C2
    1997/12/15 17:27:05 280 32 246 237 198 -1.1*1 5.3e+13 1.6e+28 281 C2 C3 195 SXT PHTX DST Java Movie UVCS Poor Event
    1997/12/17 21:32:39 219 36 162 188 242 1.6*1 4.1e+13 5.4e+27 223 C2 C3 195 SXT PHTX DST Java Movie
    1997/12/18 11:46:11 270 34 241 238 216 -0.6*1 ---- ---- 273 C2 C3 195 SXT PHTX DST Java Movie
    1997/12/18 23:47:31 Halo (S) 360 417 472 436 2.9 8.3e+15*2 7.2e+30*2 102 C2 C3 195 SXT PHTX DST Java Movie UVCS Only C3
    1997/12/20 22:13:05 8 137 195 203 232 0.9*1 7.4e+13*2 1.4e+28*2 3 C2 C3 195 SXT PHTX DST Java Movie Poor Event; Partial Halo
    1997/12/21 14:48:16 70 38 143 184 220 1.6*1 8.0e+13 8.2e+27 76 C2 C3 195 SXT PHTX DST Java Movie Poor Event
    1997/12/21 20:10:15 281 77 126 162 215 1.7*1 2.0e+14 1.6e+28 296 C2 C3 195 SXT PHTX DST Java Movie Poor Event
    1997/12/23 21:18:36 234 98 261 159 0 -29.3*1 ---- ---- 237 C2 C3 195 SXT PHTX DST Java Movie Poor Event
    1997/12/26 02:31:54 186 230 197 276 378 5.5 1.9e+15*2 3.7e+29*2 106 C2 C3 195 SXT PHTX DST Java Movie Partial Halo
    1997/12/27 00:33:59 279 63 231 270 364 4.1*1 7.6e+14 2.0e+29 272 C2 C3 195 SXT PHTX DST Java Movie
    1997/12/27 00:55:21 89 46 242 250 297 1.4*1 1.4e+14 4.0e+28 81 C2 C3 195 SXT PHTX DST Java Movie Poor Event
    1997/12/28 19:54:52 91 60 530 711 944 35.1*1 2.3e+14 3.3e+29 106 C2 C3 195 SXT PHTX DST Java Movie
    1997/12/29 12:04:24 273 62 411 452 552 7.0*1 3.0e+14 2.5e+29 293 C2 C3 195 SXT PHTX DST Java Movie
    1997/12/30 05:10:30 257 73 561 402 0 -31.8*1 1.9e+14 3.0e+29 245 C2 C3 195 PHTX DST Java Movie Poor Event
    1997/12/30 07:08:53 85 56 443 406 251 -7.1*1 2.7e+14 2.6e+29 83 C2 C3 195 PHTX DST Java Movie

    *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).