• 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
    2017/07/01 00:12:05 103 27 227 216 0 -4.2*1 3.1e+13 8.0e+27 110 C2 C3 PHTX DST Java Movie Poor Event; Only C2
    2017/07/01 14:36:05 69 18 452 515 878 25.7*1 ---- ---- 71 C2 C3 PHTX DST Java Movie Poor Event; Only C2
    2017/07/02 13:25:42 268 60 518 422 179 -16.0 1.6e+15 2.2e+30 269 C2 C3 PHTX DST Java Movie
    2017/07/03 08:12:05 266 44 226 364 451 8.1*1 1.0e+15 2.6e+29 263 C2 C3 PHTX DST Java Movie
    2017/07/03 16:48:34 263 47 260 356 395 5.4 2.4e+15 8.3e+29 262 C2 C3 PHTX DST Java Movie
    2017/07/04 09:24:05 68 63 618 264 0 -51.5*1 3.1e+14 6.0e+29 85 C2 C3 PHTX DST Java Movie Poor Event
    2017/07/04 15:12:08 82 20 110 102 0 -1.3*1 1.6e+14 9.8e+27 88 C2 C3 PHTX DST Java Movie Poor Event; Only C2
    2017/07/05 08:00:05 266 41 191 375 893 33.7*1 2.7e+14 4.9e+28 270 C2 C3 PHTX DST Java Movie Poor Event; Only C2
    2017/07/05 13:36:08 49 17 250 409 698 23.5*1 ---- ---- 58 C2 C3 PHTX DST Java Movie Very Poor Event
    2017/07/05 20:12:05 271 39 144 227 334 4.6*1 6.8e+14 7.1e+28 278 C2 C3 PHTX DST Java Movie Poor Event
    2017/07/06 05:24:06 272 41 287 346 514 8.8*1 1.9e+14 7.9e+28 275 C2 C3 PHTX DST Java Movie Poor Event
    2017/07/06 09:48:06 272 40 254 381 450 7.7*1 6.6e+14 2.1e+29 273 C2 C3 PHTX DST Java Movie Poor Event
    2017/07/06 18:36:05 78 19 210 259 768 23.0*1 ---- ---- 81 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2
    2017/07/07 00:12:05 50 13 297 237 0 -6.7*1 ---- ---- 58 C2 C3 PHTX DST Java Movie Very Poor Event
    2017/07/07 11:12:05 85 83 225 357 557 12.7*1 4.5e+14 1.1e+29 82 C2 C3 PHTX DST Java Movie Poor Event
    2017/07/08 02:48:05 114 26 143 213 485 9.5*1 1.0e+14 1.0e+28 112 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2
    2017/07/09 18:24:05 86 24 184 186 209 0.5*1 2.4e+13 4.1e+27 83 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2
    2017/07/10 15:36:05 77 14 197 245 618 15.3*1 ---- ---- 72 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2
    2017/07/11 14:20:18 24 56 65 159 224 2.1*1 1.5e+15 3.2e+28 27 C2 C3 PHTX DST Java Movie Very Poor Event
    2017/07/11 15:48:05 104 23 192 225 509 9.7*1 3.9e+13 7.2e+27 102 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2
    2017/07/11 18:00:05 94 15 273 387 886 31.7*1 ---- ---- 94 C2 C3 PHTX DST Java Movie Poor Event; Only C2
    2017/07/11 20:57:25 87 47 421 321 276 -8.1*1 9.5e+14 8.5e+29 94 C2 C3 PHTX DST Java Movie
    2017/07/12 06:24:05 92 15 303 360 549 10.1*1 ---- ---- 91 C2 C3 PHTX DST Java Movie Very Poor Event
    2017/07/12 13:36:09 268 128 215 502 499 10.6 1.1e+16*2 2.6e+30*2 279 C2 C3 PHTX DST Java Movie Partial Halo
    2017/07/13 08:48:05 272 17 302 399 483 8.1*1 ---- ---- 273 C2 C3 PHTX DST Java Movie Poor Event
    2017/07/13 11:00:05 81 20 776 909 1476 74.7*1 3.9e+13 1.2e+29 83 C2 C3 PHTX DST Java Movie Poor Event
    2017/07/13 12:00:05 83 42 242 192 0 -5.0*1 1.7e+14 4.9e+28 85 C2 C3 PHTX DST Java Movie Poor Event
    2017/07/13 16:24:05 279 29 378 329 214 -5.4*1 1.6e+15 1.1e+30 274 C2 C3 PHTX DST Java Movie Poor Event
    2017/07/13 20:36:05 260 61 290 154 0 -10.5 6.3e+15 2.7e+30 264 C2 C3 PHTX DST Java Movie
    2017/07/13 22:36:05 261 57 303 163 0 -26.7*1 4.4e+14 2.0e+29 265 C2 C3 PHTX DST Java Movie
    2017/07/14 00:12:07 261 54 322 255 0 -20.9*1 2.4e+15 1.3e+30 268 C2 C3 PHTX DST Java Movie Only C2
    2017/07/14 01:25:41 Halo 360 1200 1199 1200 -0.1 2.3e+16*2 1.6e+32*2 230 C2 C3 PHTX DST Java Movie
    2017/07/14 08:12:05 291 22 600 652 649 5.0 7.0e+13 1.3e+29 289 C2 C3 PHTX DST Java Movie
    2017/07/14 13:25:44 288 10 799 839 840 5.6*1 ---- ---- 290 C2 C3 PHTX DST Java Movie
    2017/07/15 00:36:05 277 18 553 622 828 18.5*1 ---- ---- 277 C2 C3 PHTX DST Java Movie Poor Event
    2017/07/15 11:12:07 270 55 580 401 0 -25.5*1 1.1e+15 1.8e+30 275 C2 C3 PHTX DST Java Movie
    2017/07/15 20:12:05 283 91 506 936 808 26.9 6.8e+15 8.7e+30 275 C2 C3 PHTX DST Java Movie
    2017/07/16 02:48:06 274 72 552 844 947 34.3*1 2.0e+15 3.0e+30 279 C2 C3 PHTX DST Java Movie Poor Event
    2017/07/16 09:36:05 294 14 454 534 531 6.4*1 ---- ---- 293 C2 C3 PHTX DST Java Movie
    2017/07/16 23:24:05 296 12 352 383 436 3.7*1 ---- ---- 289 C2 C3 PHTX DST Java Movie Poor Event
    2017/07/17 07:36:05 274 43 318 340 391 2.8*1 3.8e+14 1.9e+29 284 C2 C3 PHTX DST Java Movie Poor Event
    2017/07/17 16:36:05 267 122 376 445 408 2.8 2.4e+15*2 1.7e+30*2 271 C2 C3 PHTX DST Java Movie Partial Halo
    2017/07/19 07:36:05 70 12 253 225 0 -6.5*1 ---- ---- 79 C2 C3 PHTX DST Java Movie Poor Event; Only C2
    2017/07/19 14:00:05 223 8 194 309 708 21.2*1 ---- ---- 227 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2
    2017/07/19 17:24:07 311 12 301 359 1010 40.0*1 ---- ---- 307 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2
    2017/07/19 18:12:05 74 20 243 352 1099 48.9*1 3.4e+13 9.9e+27 77 C2 C3 PHTX DST Java Movie Poor Event; Only C2
    2017/07/20 00:12:07 307 44 184 143 0 -19.4*1 2.9e+13 4.9e+27 299 C2 C3 PHTX DST Java Movie Poor Event; Only C2
    2017/07/20 08:36:05 101 65 384 525 568 11.1*1 2.8e+15 2.1e+30 90 C2 C3 PHTX DST Java Movie
    2017/07/20 14:24:05 256 179 192 337 632 16.8*1 1.5e+15*2 2.8e+29*2 282 C2 C3 PHTX DST Java Movie Poor Event; Partial Halo
    2017/07/20 18:12:05 265 95 590 693 653 7.0 5.4e+15 9.4e+30 274 C2 C3 PHTX DST Java Movie
    2017/07/21 04:38:43 104 22 74 71 0 -0.4*1 6.8e+13 1.9e+27 100 C2 C3 PHTX DST Java Movie Poor Event
    2017/07/21 11:24:05 302 29 248 234 0 -4.1*1 1.4e+14 4.2e+28 300 C2 C3 PHTX DST Java Movie Poor Event; Only C2
    2017/07/22 16:48:05 308 31 258 303 536 10.0*1 1.5e+14 5.0e+28 304 C2 C3 PHTX DST Java Movie Poor Event; Only C2
    2017/07/23 01:25:41 306 144 654 707 704 5.4 1.5e+16*2 3.2e+31*2 316 C2 C3 PHTX DST Java Movie Partial Halo
    2017/07/23 04:12:06 298 43 413 503 1115 47.4*1 3.3e+15 2.8e+30 300 C2 C3 PHTX DST Java Movie Only C2
    2017/07/23 04:36:05 78 93 715 909 2553 268.5*1 2.2e+15*2 5.7e+30*2 88 C2 C3 PHTX DST Java Movie Only 3 points; Only C2
    2017/07/23 04:48:05 Halo 360 1848 1639 1790 -40.1 2.6e+16*2 4.5e+32*2 134 C2 C3 PHTX DST Java Movie
    2017/07/25 20:24:05 179 42 269 457 1355 80.1*1 2.4e+13 8.8e+27 181 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2
    2017/07/26 00:48:05 26 18 124 130 191 1.0*1 ---- ---- 28 C2 C3 PHTX DST Java Movie Poor Event; Only C2
    2017/07/26 09:12:08 40 14 153 82 0 -14.3*1 ---- ---- 35 C2 C3 PHTX DST Java Movie Poor Event; Only C2
    2017/07/27 17:36:06 341 36 286 217 0 -9.9*1 3.8e+14 1.5e+29 340 C2 C3 PHTX DST Java Movie Poor Event
    2017/07/28 03:47:14 93 71 348 202 0 -30.8*1 1.2e+15 7.5e+29 96 C2 C3 PHTX DST Java Movie
    2017/07/28 05:36:05 59 >158 526 397 454 -9.5 1.2e+16*2 1.7e+31*2 62 C2 C3 PHTX DST Java Movie Uncertain Width; Partial Halo
    2017/07/28 15:24:05 59 19 264 250 200 -1.6*1 ---- ---- 58 C2 C3 PHTX DST Java Movie Poor Event
    2017/07/29 12:00:05 66 26 251 327 460 7.6*1 9.0e+13 2.8e+28 72 C2 C3 PHTX DST Java Movie Poor Event
    2017/07/29 18:24:05 89 35 424 502 790 21.0*1 3.0e+14 2.7e+29 94 C2 C3 PHTX DST Java Movie Poor Event
    2017/07/29 21:48:05 80 40 407 428 482 4.0*1 6.0e+13 5.0e+28 82 C2 C3 PHTX DST Java Movie Poor Event
    2017/07/30 08:36:05 288 15 333 415 710 18.5*1 ---- ---- 280 C2 C3 PHTX DST Java Movie Poor Event
    2017/07/30 13:48:05 68 12 250 292 364 3.8*1 ---- ---- 74 C2 C3 PHTX DST Java Movie Poor Event
    2017/07/30 14:36:07 260 42 80 108 268 2.9*1 3.6e+14 1.1e+28 259 C2 C3 PHTX DST Java Movie Poor Event; Only C2
    2017/07/31 00:12:05 84 21 255 351 797 28.2*1 1.6e+14 5.1e+28 87 C2 C3 PHTX DST Java Movie Very Poor Event
    2017/07/31 11:48:05 108 118 152 334 692 20.7*1 1.9e+14 2.2e+28 84 C2 C3 PHTX DST Java Movie Very 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).