• 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
    2017/04/01 02:48:05 57 13 230 212 0 -2.8*1 ---- ---- 70 C2 C3 PHTX DST Java Movie Very Poor Event
    2017/04/01 09:12:08 98 26 218 278 618 15.2*1 1.4e+14 3.4e+28 101 C2 C3 PHTX DST Java Movie Poor Event; Only C2
    2017/04/01 11:12:06 315 64 294 203 0 -22.5*1 1.9e+14 8.1e+28 321 C2 C3 PHTX DST Java Movie Poor Event; Only C2
    2017/04/01 17:36:05 304 59 244 295 562 11.4*1 3.4e+14 1.0e+29 298 C2 C3 PHTX DST Java Movie Poor Event; Only C2
    2017/04/01 20:12:05 297 66 395 246 0 -28.0*1 2.0e+15 1.5e+30 307 C2 C3 PHTX DST Java Movie
    2017/04/01 22:12:05 308 115 516 330 470 -10.9 1.7e+16 2.3e+31 309 C2 C3 PHTX DST Java Movie
    2017/04/02 03:24:05 302 15 333 375 583 10.5*1 ---- ---- 305 C2 C3 PHTX DST Java Movie Poor Event; Only C2
    2017/04/02 05:12:05 282 38 523 510 472 -2.6*1 3.0e+14 4.1e+29 282 C2 C3 PHTX DST Java Movie Poor Event
    2017/04/02 08:24:05 293 87 562 500 437 -8.4*1 2.0e+15 3.2e+30 305 C2 C3 PHTX DST Java Movie Poor Event
    2017/04/02 19:24:05 290 88 500 553 547 4.1 5.4e+15 6.8e+30 302 C2 C3 PHTX DST Java Movie
    2017/04/03 01:36:05 291 46 268 192 0 -22.2*1 1.7e+14 6.2e+28 295 C2 C3 PHTX DST Java Movie Only C2
    2017/04/03 05:48:05 3 8 497 285 0 -200.9*1 ---- ---- 6 C2 C3 PHTX DST Java Movie Poor Event; Only C2
    2017/04/03 07:24:05 71 11 355 305 0 -46.3*1 ---- ---- 80 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2
    2017/04/03 13:25:19 292 66 332 497 961 37.6*1 1.7e+15 9.3e+29 311 C2 C3 PHTX DST Java Movie Only C2
    2017/04/03 14:48:05 285 80 471 386 192 -11.2 2.0e+15 2.2e+30 301 C2 C3 PHTX DST Java Movie
    2017/04/03 22:12:05 266 26 185 179 108 -1.0*1 8.1e+13 1.4e+28 261 C2 C3 PHTX DST Java Movie Poor Event
    2017/04/04 07:00:05 287 72 487 435 294 -8.8*1 3.0e+14 3.6e+29 309 C2 C3 PHTX DST Java Movie
    2017/04/04 09:24:06 294 87 555 561 569 1.0 7.4e+14 1.1e+30 296 C2 C3 PHTX DST Java Movie
    2017/04/04 12:36:05 287 72 657 432 0 -46.0*1 2.1e+14 4.5e+29 300 C2 C3 PHTX DST Java Movie
    2017/04/04 14:36:05 335 10 207 298 1219 63.1*1 ---- ---- 332 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2
    2017/04/04 17:41:50 286 64 547 815 1688 118.8*1 1.8e+14 2.6e+29 299 C2 C3 PHTX DST Java Movie
    2017/04/04 22:36:05 289 70 341 329 301 -1.5*1 7.2e+14 4.2e+29 303 C2 C3 PHTX DST Java Movie Poor Event
    2017/04/05 04:48:05 113 76 241 370 449 8.0*1 5.2e+14 1.5e+29 109 C2 C3 PHTX DST Java Movie Poor Event
    2017/04/05 09:48:05 280 46 199 182 0 -3.7*1 5.5e+13 1.1e+28 289 C2 C3 PHTX DST Java Movie Poor Event; Only C2
    2017/04/05 10:48:05 90 19 332 330 318 -0.4*1 ---- ---- 86 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2
    2017/04/05 13:25:41 306 10 374 262 0 -26.2*1 ---- ---- 299 C2 C3 PHTX DST Java Movie Very Poor Event
    2017/04/05 16:24:05 280 53 155 145 0 -2.7*1 1.2e+14 1.5e+28 283 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2
    2017/04/05 16:48:05 92 27 162 138 0 -2.0*1 6.6e+13 8.6e+27 90 C2 C3 PHTX DST Java Movie Poor Event
    2017/04/05 19:00:05 128 15 234 490 693 21.2*1 ---- ---- 124 C2 C3 PHTX DST Java Movie Poor Event
    2017/04/06 03:36:05 83 8 291 329 664 15.8*1 ---- ---- 85 C2 C3 PHTX DST Java Movie Poor Event; Only C2
    2017/04/06 16:24:05 281 82 574 610 883 20.8*1 2.3e+14 3.8e+29 262 C2 C3 PHTX DST Java Movie Only C2
    2017/04/06 17:48:05 80 28 265 230 0 -9.9*1 2.2e+14 7.7e+28 85 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2
    2017/04/06 21:17:29 274 69 359 440 565 10.0*1 9.7e+13 6.2e+28 294 C2 C3 PHTX DST Java Movie
    2017/04/06 21:48:55 80 28 184 220 332 3.6*1 1.1e+14 1.8e+28 86 C2 C3 PHTX DST Java Movie Very Poor Event
    2017/04/07 03:12:08 76 30 174 305 879 33.0*1 1.5e+10 2.2e+24 81 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2
    2017/04/07 05:00:05 274 65 233 141 0 -19.6*1 9.1e+13 2.5e+28 295 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2
    2017/04/07 15:12:08 267 39 158 255 1037 44.7*1 1.3e+13 1.7e+27 267 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2
    2017/04/07 15:24:06 70 15 342 398 807 23.4*1 ---- ---- 77 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2
    2017/04/08 00:24:05 263 33 231 451 1172 57.4*1 6.0e+13 1.6e+28 270 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2
    2017/04/09 08:48:05 89 8 231 284 749 21.8*1 ---- ---- 93 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2
    2017/04/09 14:36:05 63 8 288 353 969 36.8*1 ---- ---- 68 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2
    2017/04/09 17:12:05 279 87 142 251 352 5.1*1 1.2e+15 1.2e+29 273 C2 C3 PHTX DST Java Movie Poor Event
    2017/04/10 01:48:05 106 110 202 260 275 2.3*1 1.9e+15 3.9e+29 103 C2 C3 PHTX DST Java Movie
    2017/04/10 13:25:42 25 77 163 190 395 5.7*1 1.1e+14 1.5e+28 47 C2 C3 PHTX DST Java Movie Poor Event; Only C2
    2017/04/10 19:40:13 275 57 304 362 656 15.2*1 3.5e+14 1.6e+29 283 C2 C3 PHTX DST Java Movie Poor Event; Only C2
    2017/04/10 19:40:13 34 84 138 99 0 -7.2*1 2.9e+14 2.8e+28 45 C2 C3 PHTX DST Java Movie Poor Event; Only C2
    2017/04/10 23:12:12 Halo 360 304 235 0 -7.2 5.7e+15*2 2.6e+30*2 45 C2 C3 PHTX DST Java Movie
    2017/04/11 11:36:05 279 88 502 284 0 -33.9*1 9.5e+14 1.2e+30 299 C2 C3 PHTX DST Java Movie
    2017/04/11 21:27:58 58 41 95 0 0 -33.9*1 2.3e+13 1.0e+27 61 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2
    2017/04/12 02:12:05 51 39 173 121 0 -13.6*1 8.4e+13 1.3e+28 59 C2 C3 PHTX DST Java Movie Only C2
    2017/04/12 09:12:08 59 28 113 133 559 12.4*1 2.0e+13 1.3e+27 59 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2
    2017/04/12 11:12:05 54 36 182 58 0 -36.3*1 1.7e+14 2.8e+28 57 C2 C3 PHTX DST Java Movie Only C2
    2017/04/12 12:48:05 73 121 227 115 0 -9.3*1 9.1e+14*2 2.4e+29*2 53 C2 C3 PHTX DST Java Movie Poor Event; Partial Halo
    2017/04/13 17:36:05 263 99 277 297 311 1.2 3.0e+15 1.1e+30 266 C2 C3 PHTX DST Java Movie
    2017/04/15 02:48:05 359 126 199 288 688 19.3*1 2.1e+14*2 4.2e+28*2 348 C2 C3 PHTX DST Java Movie Poor Event; Only C2; Partial Halo
    2017/04/16 03:12:05 75 54 546 718 864 26.1*1 3.4e+14 5.0e+29 94 C2 C3 PHTX DST Java Movie
    2017/04/16 06:12:05 83 89 635 354 0 -34.0 4.9e+15 9.9e+30 96 C2 C3 PHTX DST Java Movie
    2017/04/16 23:48:05 119 14 391 389 373 -0.6*1 ---- ---- 119 C2 C3 PHTX DST Java Movie Poor Event; Only C2
    2017/04/17 03:12:08 72 61 166 94 0 -27.3*1 5.1e+13 7.0e+27 62 C2 C3 PHTX DST Java Movie Poor Event; Only C2
    2017/04/17 06:36:05 88 16 291 404 934 35.1*1 ---- ---- 86 C2 C3 PHTX DST Java Movie Poor Event; Only C2
    2017/04/17 07:48:05 78 65 260 286 378 3.7*1 3.4e+14 1.1e+29 95 C2 C3 PHTX DST Java Movie Poor Event
    2017/04/17 11:24:05 166 9 250 196 0 -36.4*1 ---- ---- 166 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2
    2017/04/17 15:24:05 111 43 282 366 561 11.5*1 5.0e+13 2.0e+28 99 C2 C3 PHTX DST Java Movie
    2017/04/17 18:36:05 167 8 416 298 0 -67.6*1 ---- ---- 164 C2 C3 PHTX DST Java Movie Poor Event; Only C2
    2017/04/17 22:12:05 68 82 342 359 421 2.9*1 1.8e+14 1.0e+29 97 C2 C3 PHTX DST Java Movie Poor Event
    2017/04/18 03:48:05 77 19 303 278 0 -6.2*1 ---- ---- 76 C2 C3 PHTX DST Java Movie Poor Event; Only C2
    2017/04/18 10:00:05 69 101 597 537 557 -4.9 1.5e+15 2.7e+30 95 C2 C3 PHTX DST Java Movie
    2017/04/18 19:48:05 Halo 360 926 796 874 -14.1 2.0e+16*2 8.6e+31*2 67 C2 C3 PHTX DST Java Movie
    2017/04/19 21:12:10 68 23 339 420 684 16.6*1 2.4e+14 1.4e+29 75 C2 C3 PHTX DST Java Movie Poor Event
    2017/04/20 00:12:05 78 10 326 204 0 -40.2*1 ---- ---- 87 C2 C3 PHTX DST Java Movie Poor Event
    2017/04/20 05:36:05 248 6 299 290 276 -0.8*1 ---- ---- 247 C2 C3 PHTX DST Java Movie Very Poor Event
    2017/04/20 16:48:06 75 91 400 308 0 -16.0*1 5.5e+14 4.4e+29 75 C2 C3 PHTX DST Java Movie Poor Event
    2017/04/20 20:00:05 294 20 322 413 450 6.0*1 3.3e+14 1.7e+29 290 C2 C3 PHTX DST Java Movie
    2017/04/20 21:49:00 27 112 487 513 518 2.3 2.8e+15 3.4e+30 19 C2 C3 PHTX DST Java Movie
    2017/04/21 10:24:05 99 13 217 287 618 16.9*1 ---- ---- 101 C2 C3 PHTX DST Java Movie Very Poor Event
    2017/04/21 13:25:44 97 17 372 398 435 3.1*1 ---- ---- 102 C2 C3 PHTX DST Java Movie Very Poor Event
    2017/04/22 22:36:05 354 14 296 439 1374 77.9*1 ---- ---- 356 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2
    2017/04/23 06:00:05 85 77 955 842 838 -19.0 1.0e+16 4.6e+31 88 C2 C3 PHTX DST Java Movie
    2017/04/24 02:48:05 55 102 854 1397 1272 64.2*1 3.6e+15 1.3e+31 60 C2 C3 PHTX DST Java Movie
    2017/04/24 06:36:05 7 99 472 503 530 3.7*1 3.8e+15 4.2e+30 25 C2 C3 PHTX DST Java Movie
    2017/04/24 16:36:05 80 23 366 345 0 -8.6*1 8.2e+13 5.5e+28 87 C2 C3 PHTX DST Java Movie Poor Event; Only C2
    2017/04/24 23:36:05 86 45 390 608 1160 54.3*1 3.7e+13 2.8e+28 85 C2 C3 PHTX DST Java Movie Very Poor Event
    2017/04/25 17:12:05 56 10 507 377 0 -91.9*1 ---- ---- 57 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2
    2017/04/26 22:00:05 97 12 160 300 653 18.6*1 ---- ---- 99 C2 C3 PHTX DST Java Movie Very Poor Event
    2017/04/27 08:24:05 92 10 200 158 0 -3.7*1 ---- ---- 100 C2 C3 PHTX DST Java Movie Very Poor Event
    2017/04/27 18:12:05 303 62 70 180 229 2.3*1 2.6e+15 6.5e+28 306 C2 C3 PHTX DST Java Movie Poor Event
    2017/04/28 10:12:05 93 12 216 173 0 -3.5*1 ---- ---- 97 C2 C3 PHTX DST Java Movie Poor Event
    2017/04/28 19:56:59 297 39 375 458 464 5.6 4.5e+14 3.2e+29 298 C2 C3 PHTX DST Java Movie
    2017/04/28 22:00:05 88 54 177 366 559 13.2*1 4.9e+14 7.6e+28 94 C2 C3 PHTX DST Java Movie
    2017/04/30 02:36:05 257 89 282 446 547 11.9 1.9e+15 7.6e+29 258 C2 C3 PHTX DST Java Movie
    2017/04/30 19:00:05 285 66 390 515 1127 50.2*1 9.6e+13 7.3e+28 286 C2 C3 PHTX DST Java Movie Only C2
    2017/04/30 22:00:05 277 29 185 135 0 -15.5*1 3.4e+13 5.8e+27 275 C2 C3 PHTX DST Java Movie Very 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).