• 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
    2020/10/01 00:36:05 103 12 314 360 834 25.9*1 ---- ---- 101 C2 C3 PHTX DST Java Movie Poor Event; Only C2
    2020/10/03 05:12:06 350 6 262 415 1601 105.7*1 ---- ---- 348 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2
    2020/10/03 23:48:05 265 18 217 264 594 15.6*1 ---- ---- 260 C2 C3 PHTX DST Java Movie Very Poor Event
    2020/10/04 11:24:05 260 12 155 114 0 -9.4*1 ---- ---- 262 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2
    2020/10/04 22:36:05 264 13 244 251 312 1.8*1 ---- ---- 265 C2 C3 PHTX DST Java Movie Very Poor Event
    2020/10/05 00:24:07 332 9 243 144 0 -57.3*1 ---- ---- 328 C2 C3 PHTX DST Java Movie Poor Event; Only C2
    2020/10/05 10:12:05 258 12 227 236 323 2.5*1 ---- ---- 268 C2 C3 PHTX DST Java Movie Poor Event; Only C2
    2020/10/05 12:36:05 113 5 322 467 1362 75.1*1 ---- ---- 110 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2
    2020/10/05 13:25:41 341 7 592 227 0 -548.9*1 ---- ---- 334 C2 C3 PHTX DST Java Movie Very Poor Event; Only 3 points; Only C2
    2020/10/05 20:48:05 268 6 168 242 569 13.4*1 ---- ---- 268 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2
    2020/10/06 06:00:05 279 83 355 693 587 14.3 5.4e+15 3.4e+30 297 C2 C3 PHTX DST Java Movie
    2020/10/06 15:12:09 90 48 71 88 183 1.3*1 4.8e+14 1.2e+28 94 C2 C3 PHTX DST Java Movie Poor Event; Only C2
    2020/10/09 23:24:06 170 6 445 276 0 -161.8*1 ---- ---- 168 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2
    2020/10/10 03:36:05 283 23 109 132 249 2.4*1 2.9e+13 1.7e+27 281 C2 C3 PHTX DST Java Movie Very Poor Event
    2020/10/11 11:48:05 278 29 92 75 0 -2.3*1 4.5e+13 1.9e+27 285 C2 C3 PHTX DST Java Movie Very Poor Event
    2020/10/11 12:00:05 103 34 124 43 0 -25.3*1 3.7e+13 2.9e+27 110 C2 C3 PHTX DST Java Movie Poor Event; Only C2
    2020/10/11 12:36:05 17 30 316 476 1216 59.9*1 4.4e+13 2.2e+28 10 C2 C3 PHTX DST Java Movie Poor Event; Only C2
    2020/10/11 14:00:05 29 6 365 351 0 -13.1*1 ---- ---- 30 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2
    2020/10/13 20:48:05 284 63 139 187 381 5.6*1 3.9e+14 3.8e+28 277 C2 C3 PHTX DST Java Movie Poor Event
    2020/10/14 06:24:05 293 49 66 61 0 -0.3*1 5.8e+13 1.3e+27 288 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2
    2020/10/14 09:48:06 103 42 50 59 162 1.1*1 5.4e+13 6.8e+26 106 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2
    2020/10/14 22:12:05 104 58 80 122 164 1.2*1 1.2e+15 3.8e+28 111 C2 C3 PHTX DST Java Movie Very Poor Event
    2020/10/15 16:36:05 288 34 156 141 102 -0.7*1 9.2e+14 1.1e+29 285 C2 C3 PHTX DST Java Movie Poor Event
    2020/10/16 13:25:21 283 55 271 139 0 -18.0*1 3.5e+14 1.3e+29 273 C2 C3 PHTX DST Java Movie Poor Event
    2020/10/18 01:48:05 281 39 218 283 614 14.8*1 1.7e+14 4.1e+28 279 C2 C3 PHTX DST Java Movie Poor Event
    2020/10/18 09:12:10 279 63 438 137 0 -33.8 1.0e+15 1.0e+30 269 C2 C3 PHTX DST Java Movie
    2020/10/18 21:24:05 283 8 283 318 411 4.5*1 ---- ---- 286 C2 C3 PHTX DST Java Movie Poor Event
    2020/10/20 01:25:18 123 28 158 150 0 -2.5*1 4.0e+13 5.0e+27 121 C2 C3 PHTX DST Java Movie Poor Event; Only C2
    2020/10/20 09:12:11 16 10 364 390 995 36.4*1 ---- ---- 19 C2 C3 PHTX DST Java Movie Very Poor Event; Only 3 points; Only C2
    2020/10/20 12:12:05 287 15 135 184 334 4.4*1 ---- ---- 295 C2 C3 PHTX DST Java Movie Poor Event
    2020/10/20 20:12:05 196 5 687 607 0 -73.8*1 ---- ---- 198 C2 C3 PHTX DST Java Movie Poor Event; Only C2
    2020/10/21 20:56:51 288 52 400 460 668 13.6*1 1.7e+14 1.3e+29 285 C2 C3 PHTX DST Java Movie
    2020/10/22 13:25:19 294 225 388 254 0 -18.0*1 6.2e+14*2 4.7e+29*2 290 C2 C3 PHTX DST Java Movie Partial Halo
    2020/10/22 14:00:06 67 56 208 281 580 13.1*1 2.4e+14 5.2e+28 75 C2 C3 PHTX DST Java Movie Poor Event; Only C2
    2020/10/23 06:36:05 284 21 147 210 749 23.1*1 1.7e+13 1.8e+27 282 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2
    2020/10/23 23:13:43 93 79 413 465 418 4.1 1.1e+15 9.8e+29 107 C2 C3 PHTX DST Java Movie Only C3
    2020/10/24 08:24:07 230 13 179 175 0 -2.4*1 ---- ---- 232 C2 C3 PHTX DST Java Movie Poor Event; Only C2
    2020/10/25 18:48:05 108 22 139 161 200 1.1*1 2.2e+14 2.2e+28 106 C2 C3 PHTX DST Java Movie Poor Event
    2020/10/26 07:48:05 128 59 82 113 309 4.2*1 9.4e+13 3.2e+27 124 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2
    2020/10/26 18:00:05 81 83 315 297 257 -1.9 1.3e+15 6.6e+29 104 C2 C3 PHTX DST Java Movie
    2020/10/27 07:12:05 135 109 206 216 227 0.5*1 2.4e+14 5.1e+28 127 C2 C3 PHTX DST Java Movie
    2020/10/28 13:25:41 92 50 158 188 228 1.5*1 3.1e+14 3.8e+28 97 C2 C3 PHTX DST Java Movie
    2020/10/29 06:12:05 182 12 366 301 0 -60.4*1 ---- ---- 180 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2
    2020/10/29 10:00:05 91 40 128 94 0 -8.1*1 6.5e+13 5.3e+27 97 C2 C3 PHTX DST Java Movie Poor Event; Only C2
    2020/10/30 02:24:05 260 32 318 404 462 6.8*1 1.5e+14 7.4e+28 251 C2 C3 PHTX DST Java Movie Poor Event
    2020/10/30 03:24:05 300 7 203 268 750 22.3*1 ---- ---- 298 C2 C3 PHTX DST Java Movie Poor Event; Only C2
    2020/10/30 11:12:05 103 25 132 194 409 6.7*1 1.8e+14 1.6e+28 104 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2
    2020/10/30 12:24:05 247 12 259 339 789 24.5*1 ---- ---- 248 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2
    2020/10/30 16:24:05 87 13 235 279 360 4.1*1 ---- ---- 93 C2 C3 PHTX DST Java Movie Very Poor Event
    2020/10/30 18:51:17 310 8 204 441 2067 176.9*1 ---- ---- 313 C2 C3 PHTX DST Java Movie Very Poor Event; Only 3 points; Only C2
    2020/10/30 19:48:05 312 11 379 557 1176 57.0*1 ---- ---- 310 C2 C3 PHTX DST Java Movie Poor Event; Only C2
    2020/10/30 19:48:05 271 15 169 271 462 9.5*1 ---- ---- 271 C2 C3 PHTX DST Java Movie Poor Event
    2020/10/31 01:25:43 267 28 534 649 673 12.3 5.4e+13 7.8e+28 270 C2 C3 PHTX DST Java Movie
    2020/10/31 07:12:05 282 30 499 499 500 0.1*1 1.7e+14 2.1e+29 279 C2 C3 PHTX DST Java Movie
    2020/10/31 11:00:05 102 20 154 67 0 -19.8*1 3.7e+13 4.4e+27 98 C2 C3 PHTX DST Java Movie Poor Event; Only C2
    2020/10/31 18:36:05 95 23 305 257 0 -9.1*1 9.7e+13 4.5e+28 95 C2 C3 PHTX DST Java Movie Poor Event

    *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).