• 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
    2020/07/01 04:00:05 80 44 290 271 69 -3.7*1 2.9e+14 1.2e+29 79 C2 C3 PHTX DST Java Movie
    2020/07/01 07:36:05 76 41 170 167 151 -0.3*1 1.5e+12 2.2e+26 87 C2 C3 PHTX DST Java Movie
    2020/07/03 06:36:05 198 6 838 --- --- --- ---- ---- 207 C2 C3 PHTX DST Java Movie Poor Event; Only 2 points; Only C2
    2020/07/03 19:24:05 81 51 364 279 0 -20.7*1 1.3e+14 8.7e+28 76 C2 C3 PHTX DST Java Movie
    2020/07/04 14:48:05 172 9 545 405 0 -96.2*1 ---- ---- 171 C2 C3 PHTX DST Java Movie Poor Event; Only C2
    2020/07/04 22:24:05 323 9 176 254 1001 41.4*1 ---- ---- 323 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2
    2020/07/05 10:36:05 76 90 209 456 441 8.1 4.7e+15 1.0e+30 89 C2 C3 PHTX DST Java Movie
    2020/07/06 11:24:05 249 48 61 64 102 0.3*1 4.5e+13 8.4e+26 248 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2
    2020/07/08 04:48:05 251 21 95 195 613 17.3*1 4.9e+12 2.2e+26 254 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2
    2020/07/08 22:36:05 74 23 144 213 742 22.2*1 1.6e+13 1.6e+27 78 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2
    2020/07/09 02:48:05 255 69 298 382 351 3.2 2.9e+15 1.3e+30 256 C2 C3 PHTX DST Java Movie
    2020/07/09 13:48:05 248 12 267 395 631 16.0*1 ---- ---- 245 C2 C3 PHTX DST Java Movie Poor Event
    2020/07/09 20:56:53 247 51 361 347 322 -1.5*1 1.4e+13 8.9e+27 254 C2 C3 PHTX DST Java Movie Poor Event
    2020/07/10 22:24:05 256 11 205 217 325 2.9*1 ---- ---- 258 C2 C3 PHTX DST Java Movie Very Poor Event
    2020/07/13 03:48:05 243 19 323 329 377 1.8*1 ---- ---- 240 C2 C3 PHTX DST Java Movie Poor Event; Only C2
    2020/07/15 12:48:05 165 7 342 593 1788 134.2*1 ---- ---- 162 C2 C3 PHTX DST Java Movie Very Poor Event; Only 3 points; Only C2
    2020/07/16 04:12:05 76 80 322 422 408 4.7*1 1.6e+15 8.5e+29 81 C2 C3 PHTX DST Java Movie
    2020/07/17 01:36:06 264 57 299 309 356 1.9*1 5.7e+13 2.5e+28 263 C2 C3 PHTX DST Java Movie
    2020/07/17 08:48:05 172 6 404 664 2324 228.4*1 ---- ---- 172 C2 C3 PHTX DST Java Movie Very Poor Event; Only 3 points; Only C2
    2020/07/17 15:12:09 248 15 133 183 377 6.2*1 ---- ---- 242 C2 C3 PHTX DST Java Movie Very Poor Event
    2020/07/18 00:48:05 172 8 414 964 2952 360.9*1 ---- ---- 170 C2 C3 PHTX DST Java Movie Very Poor Event; Only 3 points; Only C2
    2020/07/18 15:16:16 245 72 68 51 0 -0.6*1 4.4e+14 1.0e+28 247 C2 C3 PHTX DST Java Movie Poor Event
    2020/07/19 04:13:20 191 7 756 902 2387 221.6*1 ---- ---- 195 C2 C3 PHTX DST Java Movie Very Poor Event; Only 3 points; Only C2
    2020/07/19 12:18:49 204 212 105 167 369 5.6*1 2.2e+14*2 1.2e+28*2 27 C2 C3 PHTX DST Java Movie Poor Event; Only C2; Partial Halo
    2020/07/19 23:06:41 245 16 180 199 292 2.4*1 ---- ---- 243 C2 C3 PHTX DST Java Movie Poor Event
    2020/07/21 10:12:05 78 46 183 114 0 -14.8*1 1.3e+13 2.1e+27 77 C2 C3 PHTX DST Java Movie Poor Event; Only C2
    2020/07/22 01:25:18 93 39 187 216 392 5.4*1 2.9e+13 5.1e+27 84 C2 C3 PHTX DST Java Movie Poor Event
    2020/07/22 03:12:10 15 7 597 796 2593 278.1*1 ---- ---- 19 C2 C3 PHTX DST Java Movie Very Poor Event; Only 3 points; Only C2
    2020/07/23 12:48:05 60 10 269 469 1613 106.9*1 ---- ---- 66 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2
    2020/07/23 19:24:05 87 17 139 121 0 -5.0*1 ---- ---- 92 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2
    2020/07/24 14:12:05 260 33 124 277 291 3.7*1 1.7e+15 1.3e+29 266 C2 C3 PHTX DST Java Movie
    2020/07/26 04:24:05 261 16 263 277 305 1.4*1 ---- ---- 261 C2 C3 PHTX DST Java Movie
    2020/07/26 06:48:06 260 22 128 192 418 7.3*1 4.1e+13 3.4e+27 260 C2 C3 PHTX DST Java Movie Poor Event
    2020/07/26 18:24:05 58 16 295 432 1021 42.2*1 ---- ---- 58 C2 C3 PHTX DST Java Movie Poor Event; Only C2
    2020/07/27 15:38:15 245 13 127 193 757 24.0*1 ---- ---- 249 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2
    2020/07/28 08:36:05 78 15 105 138 252 2.6*1 ---- ---- 79 C2 C3 PHTX DST Java Movie Poor Event
    2020/07/29 01:25:42 79 47 141 85 0 -25.8*1 1.4e+13 1.4e+27 80 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2
    2020/07/29 15:37:34 84 76 163 372 319 4.4*1 4.3e+15 5.7e+29 91 C2 C3 PHTX DST Java Movie
    2020/07/30 13:48:05 88 16 290 392 841 31.6*1 ---- ---- 85 C2 C3 PHTX DST Java Movie Poor Event
    2020/07/30 14:24:05 95 52 293 398 514 9.4*1 5.4e+13 2.3e+28 94 C2 C3 PHTX DST Java Movie
    2020/07/30 21:12:09 94 12 177 218 512 10.4*1 ---- ---- 90 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2
    2020/07/30 23:12:11 142 9 418 647 2768 320.1*1 ---- ---- 137 C2 C3 PHTX DST Java Movie Poor Event; Only 3 points; Only C2
    2020/07/31 01:25:41 5 18 251 230 0 -8.5*1 ---- ---- 10 C2 C3 PHTX DST Java Movie Only C2
    2020/07/31 06:12:11 6 10 806 1187 3477 532.1*1 ---- ---- 12 C2 C3 PHTX DST Java Movie Poor Event; Only 3 points; Only C2
    2020/07/31 07:12:05 262 60 258 291 659 16.0*1 1.6e+13 5.2e+27 265 C2 C3 PHTX DST Java Movie Poor Event; Only C2
    2020/07/31 08:48:25 91 13 315 339 439 4.9*1 ---- ---- 92 C2 C3 PHTX DST Java Movie Poor Event
    2020/07/31 16:36:05 88 80 202 371 318 4.0 3.8e+15 7.7e+29 89 C2 C3 PHTX DST Java Movie
    2020/07/31 21:12:10 242 8 395 421 756 18.5*1 ---- ---- 246 C2 C3 PHTX DST Java Movie Poor Event; Only C2
    2020/07/31 21:36:06 95 10 277 301 334 2.2*1 ---- ---- 98 C2 C3 PHTX DST Java Movie
    2020/07/31 23:36:05 263 55 172 164 0 -2.0*1 3.8e+13 5.6e+27 261 C2 C3 PHTX DST Java Movie Poor Event; 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).