• 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
    2020/09/02 01:36:16 90 49 76 26 0 -6.9*1 1.6e+14 4.7e+27 85 C2 C3 PHTX DST Java Movie Poor Event; Only C2
    2020/09/02 06:12:05 89 44 88 69 0 -1.7*1 7.7e+13 3.0e+27 88 C2 C3 PHTX DST Java Movie Poor Event; Only C2
    2020/09/03 00:12:06 95 48 263 276 399 4.1*1 4.4e+12 1.5e+27 86 C2 C3 PHTX DST Java Movie Poor Event; Only C2
    2020/09/03 04:24:05 103 25 118 146 287 3.2*1 5.4e+12 3.8e+26 103 C2 C3 PHTX DST Java Movie Poor Event; Only C2
    2020/09/03 07:24:05 82 14 187 253 422 7.0*1 ---- ---- 87 C2 C3 PHTX DST Java Movie Poor Event
    2020/09/03 20:56:54 96 53 168 268 326 4.3*1 4.1e+14 5.7e+28 94 C2 C3 PHTX DST Java Movie
    2020/09/04 07:12:05 255 31 108 121 179 1.0*1 4.7e+13 2.7e+27 251 C2 C3 PHTX DST Java Movie Poor Event
    2020/09/04 07:48:05 168 9 355 93 0 -102.2*1 ---- ---- 167 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2
    2020/09/04 22:36:05 84 38 294 369 727 19.9*1 3.5e+13 1.5e+28 85 C2 C3 PHTX DST Java Movie
    2020/09/05 05:48:05 263 67 297 344 357 2.7 2.0e+15 8.7e+29 263 C2 C3 PHTX DST Java Movie
    2020/09/05 11:24:05 85 44 391 362 126 -6.6*1 7.1e+13 5.4e+28 91 C2 C3 PHTX DST Java Movie
    2020/09/06 12:36:05 84 9 180 143 0 -7.4*1 ---- ---- 83 C2 C3 PHTX DST Java Movie Very Poor Event
    2020/09/07 07:00:05 92 16 177 241 375 5.5*1 ---- ---- 95 C2 C3 PHTX DST Java Movie Very Poor Event
    2020/09/07 08:24:05 86 30 140 142 145 0.1*1 2.8e+14 2.7e+28 89 C2 C3 PHTX DST Java Movie Poor Event
    2020/09/07 18:36:05 259 53 218 320 347 4.4*1 1.8e+15 4.2e+29 265 C2 C3 PHTX DST Java Movie Poor Event
    2020/09/07 21:24:05 274 63 184 388 370 5.8 2.7e+15 4.6e+29 271 C2 C3 PHTX DST Java Movie
    2020/09/08 12:48:05 84 50 219 203 0 -2.9*1 2.2e+14 5.4e+28 86 C2 C3 PHTX DST Java Movie Poor Event
    2020/09/08 15:31:47 269 53 285 327 335 2.2*1 7.7e+12 3.1e+27 263 C2 C3 PHTX DST Java Movie
    2020/09/09 02:36:05 85 49 131 143 365 4.9*1 3.4e+13 2.9e+27 98 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2
    2020/09/09 16:24:05 259 16 397 396 396 -0.1*1 ---- ---- 266 C2 C3 PHTX DST Java Movie Poor Event
    2020/09/10 05:36:05 273 10 439 387 0 -16.6*1 ---- ---- 270 C2 C3 PHTX DST Java Movie Very Poor Event
    2020/09/11 02:00:05 339 10 256 276 614 13.4*1 ---- ---- 338 C2 C3 PHTX DST Java Movie Very Poor Event; Only 3 points; Only C2
    2020/09/11 18:24:05 279 10 249 396 1315 80.2*1 ---- ---- 279 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2
    2020/09/12 06:36:06 228 6 265 207 0 -42.4*1 ---- ---- 236 C2 C3 PHTX DST Java Movie Poor Event; Only C2
    2020/09/13 12:24:05 278 41 73 53 0 -2.0*1 2.9e+14 7.7e+27 272 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2
    2020/09/14 12:36:05 94 27 111 134 347 4.7*1 3.1e+13 1.9e+27 93 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2
    2020/09/15 19:48:05 272 17 153 23 0 -23.1*1 ---- ---- 273 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2
    2020/09/16 02:24:05 273 21 128 269 273 3.2*1 3.2e+14 2.6e+28 271 C2 C3 PHTX DST Java Movie
    2020/09/16 08:48:05 80 18 192 252 549 11.8*1 ---- ---- 85 C2 C3 PHTX DST Java Movie Poor Event; Only C2
    2020/09/17 01:36:15 275 10 231 299 477 8.9*1 ---- ---- 277 C2 C3 PHTX DST Java Movie Very Poor Event
    2020/09/17 12:36:05 21 11 308 347 740 19.7*1 ---- ---- 22 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2
    2020/09/18 07:12:06 263 6 188 185 55 -1.4*1 ---- ---- 269 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2
    2020/09/18 13:25:37 70 111 162 278 335 4.6*1 2.2e+15 2.9e+29 69 C2 C3 PHTX DST Java Movie
    2020/09/19 10:00:05 267 37 110 128 247 2.2*1 3.0e+14 1.8e+28 263 C2 C3 PHTX DST Java Movie Poor Event; Only C2
    2020/09/20 00:24:05 69 54 205 210 243 0.9*1 5.4e+13 1.1e+28 72 C2 C3 PHTX DST Java Movie Very Poor Event
    2020/09/20 14:00:05 81 10 303 423 986 45.4*1 ---- ---- 88 C2 C3 PHTX DST Java Movie Very Poor Event
    2020/09/20 21:48:06 266 25 161 239 297 3.5*1 6.0e+12 7.8e+26 268 C2 C3 PHTX DST Java Movie Very Poor Event
    2020/09/23 01:25:40 271 43 144 106 0 -13.0*1 6.9e+13 7.2e+27 272 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2
    2020/09/23 11:24:06 173 5 409 303 0 -83.0*1 ---- ---- 172 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2
    2020/09/27 22:36:05 249 13 255 321 802 25.5*1 ---- ---- 260 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2
    2020/09/28 00:48:05 80 25 219 249 412 6.2*1 3.2e+11 7.6e+25 85 C2 C3 PHTX DST Java Movie Very Poor Event
    2020/09/29 07:12:05 252 21 78 92 221 1.8*1 3.7e+13 1.1e+27 255 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2
    2020/09/29 17:00:05 78 54 134 208 414 7.4*1 1.3e+14 1.1e+28 80 C2 C3 PHTX DST Java Movie Poor Event
    2020/09/30 08:00:06 50 24 578 404 0 -80.8*1 3.4e+13 5.6e+28 62 C2 C3 PHTX DST Java Movie Poor Event; Only C2
    2020/09/30 11:24:05 82 41 121 157 392 6.1*1 5.9e+13 4.3e+27 78 C2 C3 PHTX DST Java Movie Poor Event; Only C2
    2020/09/30 18:36:05 244 109 89 102 167 0.9*1 1.6e+14 6.5e+27 253 C2 C3 PHTX DST Java Movie Poor Event
    2020/09/30 20:56:55 151 6 283 230 0 -63.6*1 ---- ---- 150 C2 C3 PHTX DST Java Movie Very Poor Event; Only 3 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).