• 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
    2017/08/01 19:36:05 65 46 183 234 534 10.9*1 1.7e+14 2.9e+28 60 C2 C3 PHTX DST Java Movie Only C2
    2017/08/02 01:25:42 58 47 402 511 738 19.4*1 7.8e+14 6.3e+29 60 C2 C3 PHTX DST Java Movie
    2017/08/03 08:00:05 259 22 223 305 442 7.8*1 3.3e+13 8.3e+27 261 C2 C3 PHTX DST Java Movie Very Poor Event
    2017/08/03 14:12:05 58 12 235 257 319 2.5*1 ---- ---- 67 C2 C3 PHTX DST Java Movie Very Poor Event
    2017/08/03 21:48:52 286 10 130 92 0 -23.2*1 ---- ---- 284 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2
    2017/08/04 07:12:05 259 18 241 351 1193 61.4*1 ---- ---- 255 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2
    2017/08/04 22:24:07 351 6 316 383 932 34.0*1 ---- ---- 353 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2
    2017/08/05 10:48:05 62 70 274 749 1026 43.9*1 7.5e+14 2.8e+29 62 C2 C3 PHTX DST Java Movie
    2017/08/08 12:36:05 258 29 287 278 235 -1.6*1 3.2e+14 1.3e+29 249 C2 C3 PHTX DST Java Movie Very Poor Event
    2017/08/08 21:38:26 251 10 361 418 408 3.2 ---- ---- 252 C2 C3 PHTX DST Java Movie
    2017/08/09 04:24:05 112 17 139 169 365 5.0*1 ---- ---- 106 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2
    2017/08/10 07:24:06 252 5 244 213 115 -2.7*1 ---- ---- 255 C2 C3 PHTX DST Java Movie Very Poor Event
    2017/08/11 00:24:05 275 32 340 498 900 32.7*1 5.3e+13 3.0e+28 269 C2 C3 PHTX DST Java Movie Very Poor Event
    2017/08/11 05:36:06 68 17 131 233 779 25.0*1 ---- ---- 70 C2 C3 PHTX DST Java Movie Poor Event; Only C2
    2017/08/12 15:36:05 3 9 347 154 0 -132.3*1 ---- ---- 3 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2
    2017/08/13 07:00:05 135 25 104 144 370 5.5*1 1.2e+14 6.4e+27 128 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2
    2017/08/13 19:36:05 10 8 297 349 891 30.2*1 ---- ---- 10 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2
    2017/08/14 01:25:41 195 5 295 314 867 28.6*1 ---- ---- 196 C2 C3 PHTX DST Java Movie Very Poor Event; Only 3 points; Only C2
    2017/08/14 03:12:08 91 52 156 124 0 -10.4*1 3.5e+13 4.2e+27 98 C2 C3 PHTX DST Java Movie Poor Event; Only C2
    2017/08/14 04:36:05 88 66 189 106 0 -27.7*1 7.6e+13 1.4e+28 99 C2 C3 PHTX DST Java Movie Poor Event; Only C2
    2017/08/14 06:36:06 93 74 227 147 0 -20.9*1 1.3e+14 3.4e+28 98 C2 C3 PHTX DST Java Movie Poor Event; Only C2
    2017/08/15 05:24:05 15 8 420 392 0 -26.4*1 ---- ---- 14 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2
    2017/08/15 14:00:05 96 90 406 348 374 -2.8 9.1e+15 7.5e+30 86 C2 C3 PHTX DST Java Movie
    2017/08/16 15:36:05 90 77 560 1136 1091 49.4 3.1e+15 4.8e+30 74 C2 C3 PHTX DST Java Movie
    2017/08/17 22:12:06 251 32 209 206 165 -0.7*1 9.5e+13 2.1e+28 253 C2 C3 PHTX DST Java Movie Poor Event; Only C2
    2017/08/18 01:05:07 82 60 118 95 0 -1.4*1 4.2e+14 2.9e+28 81 C2 C3 PHTX DST Java Movie Poor Event
    2017/08/18 01:16:54 305 24 90 96 153 0.7*1 1.3e+14 5.4e+27 303 C2 C3 PHTX DST Java Movie Poor Event; Only C2
    2017/08/18 11:12:05 84 81 235 406 387 5.8 7.1e+15 2.0e+30 82 C2 C3 PHTX DST Java Movie
    2017/08/19 03:12:08 82 90 311 398 434 6.1*1 3.3e+15 1.6e+30 90 C2 C3 PHTX DST Java Movie
    2017/08/19 15:12:08 313 13 230 325 635 18.1*1 ---- ---- 304 C2 C3 PHTX DST Java Movie Very Poor Event
    2017/08/19 20:57:18 77 8 238 259 378 4.5*1 ---- ---- 78 C2 C3 PHTX DST Java Movie Poor Event
    2017/08/20 02:36:05 88 61 175 125 0 -16.9*1 3.3e+13 5.1e+27 92 C2 C3 PHTX DST Java Movie Poor Event; Only C2
    2017/08/20 07:00:05 98 14 223 308 537 12.3*1 ---- ---- 100 C2 C3 PHTX DST Java Movie Poor Event
    2017/08/20 18:12:05 98 30 191 486 968 40.6*1 1.2e+14 2.2e+28 96 C2 C3 PHTX DST Java Movie Poor Event
    2017/08/20 20:24:05 88 43 207 244 622 14.7*1 5.0e+13 1.1e+28 92 C2 C3 PHTX DST Java Movie Poor Event; Only C2
    2017/08/20 22:12:05 100 25 53 37 0 -7.4*1 5.9e+13 8.3e+26 102 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2
    2017/08/20 23:24:07 91 43 210 201 0 -2.3*1 1.4e+14 3.1e+28 92 C2 C3 PHTX DST Java Movie Only C2
    2017/08/21 05:36:05 350 13 196 328 1325 72.9*1 ---- ---- 351 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2
    2017/08/21 09:48:05 349 10 241 265 548 10.5*1 ---- ---- 349 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2
    2017/08/21 16:12:05 93 70 254 252 248 -0.2*1 5.4e+14 1.8e+29 99 C2 C3 PHTX DST Java Movie Poor Event
    2017/08/21 18:00:05 206 13 627 703 1667 104.7*1 ---- ---- 210 C2 C3 PHTX DST Java Movie Very Poor Event; Only 3 points; Only C2
    2017/08/22 06:12:05 108 11 399 565 1468 94.0*1 ---- ---- 103 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2
    2017/08/23 00:51:32 51 128 211 158 0 -4.0 2.3e+15*2 5.1e+29*2 56 C2 C3 PHTX DST Java Movie Partial Halo
    2017/08/23 07:48:06 315 13 520 637 1093 42.6*1 ---- ---- 313 C2 C3 PHTX DST Java Movie Poor Event; Only C2
    2017/08/24 00:12:06 46 62 241 295 370 4.6*1 6.5e+14 1.9e+29 43 C2 C3 PHTX DST Java Movie Poor Event
    2017/08/24 01:26:15 267 20 179 255 475 9.9*1 2.5e+14 4.0e+28 257 C2 C3 PHTX DST Java Movie Poor Event
    2017/08/24 11:36:05 58 31 309 398 554 11.8*1 1.4e+13 6.7e+27 62 C2 C3 PHTX DST Java Movie Poor Event
    2017/08/25 21:36:05 66 26 219 211 0 -4.8*1 7.6e+12 1.8e+27 67 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2
    2017/08/26 09:48:05 62 27 202 40 0 -60.7*1 4.1e+13 8.5e+27 62 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2
    2017/08/26 19:36:05 166 14 482 514 849 21.4*1 ---- ---- 163 C2 C3 PHTX DST Java Movie Poor Event; Only C2
    2017/08/26 23:12:10 64 26 162 197 286 2.9*1 1.8e+14 2.3e+28 57 C2 C3 PHTX DST Java Movie Poor Event
    2017/08/27 03:48:07 64 32 199 235 308 2.8*1 4.2e+14 8.4e+28 60 C2 C3 PHTX DST Java Movie Poor Event
    2017/08/27 06:36:05 170 12 325 207 0 -53.0*1 ---- ---- 167 C2 C3 PHTX DST Java Movie Poor Event; Only C2
    2017/08/27 18:48:05 108 45 174 135 0 -7.5*1 4.3e+13 6.6e+27 111 C2 C3 PHTX DST Java Movie Poor Event; Only C2
    2017/08/28 17:36:05 246 117 298 360 385 3.7 3.7e+15 1.7e+30 277 C2 C3 PHTX DST Java Movie
    2017/08/29 03:48:05 72 45 86 53 0 -3.0*1 4.0e+14 1.5e+28 65 C2 C3 PHTX DST Java Movie Poor Event; Only C2
    2017/08/29 09:48:05 278 42 167 94 0 -13.9*1 3.0e+13 4.2e+27 275 C2 C3 PHTX DST Java Movie Poor Event; Only C2
    2017/08/30 08:36:05 69 31 187 186 184 -0.1*1 3.2e+14 5.5e+28 72 C2 C3 PHTX DST Java Movie Poor Event
    2017/08/30 09:36:05 269 36 236 243 269 0.9*1 5.4e+14 1.5e+29 268 C2 C3 PHTX DST Java Movie
    2017/08/30 15:24:05 266 31 192 128 0 -35.5*1 1.3e+12 2.3e+26 271 C2 C3 PHTX DST Java Movie Poor Event; Only C2
    2017/08/30 16:48:05 277 56 245 281 479 7.6*1 2.6e+14 7.7e+28 278 C2 C3 PHTX DST Java Movie Only C2
    2017/08/31 04:12:05 70 46 295 322 371 2.7*1 7.0e+14 3.0e+29 71 C2 C3 PHTX DST Java Movie
    2017/08/31 05:12:07 286 87 233 225 126 -1.8*1 1.8e+14 4.9e+28 271 C2 C3 PHTX DST Java Movie Poor Event
    2017/08/31 09:36:06 275 38 212 189 0 -5.3*1 7.8e+11 1.8e+26 283 C2 C3 PHTX DST Java Movie Poor Event; Only C2
    2017/08/31 14:48:05 275 54 274 311 452 6.2*1 3.1e+14 1.1e+29 273 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).