• 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
    2018/06/01 06:12:12 272 73 340 486 921 35.7*1 3.7e+13 2.1e+28 264 C2 C3 PHTX DST Java Movie Very Poor Event
    2018/06/01 12:00:06 85 20 111 228 302 3.9*1 1.8e+12 1.1e+26 91 C2 C3 PHTX DST Java Movie
    2018/06/02 10:48:05 82 14 327 198 0 -38.2*1 ---- ---- 88 C2 C3 PHTX DST Java Movie Very Poor Event
    2018/06/03 00:48:05 85 14 268 456 1360 91.2*1 ---- ---- 87 C2 C3 PHTX DST Java Movie Very Poor Event
    2018/06/03 01:36:08 267 48 397 930 1646 114.2*1 2.1e+14 1.7e+29 260 C2 C3 PHTX DST Java Movie Poor Event
    2018/06/03 18:36:05 93 29 105 35 0 -21.6*1 3.4e+13 1.9e+27 91 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2
    2018/06/06 00:48:05 282 27 89 136 425 7.5*1 4.2e+13 1.7e+27 287 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2
    2018/06/07 12:00:06 101 27 164 123 0 -2.6*1 8.6e+12 1.2e+27 102 C2 C3 PHTX DST Java Movie Poor Event
    2018/06/08 19:31:28 99 12 1091 1508 1932 300.4*1 ---- ---- 104 C2 C3 PHTX DST Java Movie Very Poor Event; Only C3
    2018/06/09 02:48:05 243 10 249 317 675 18.1*1 ---- ---- 247 C2 C3 PHTX DST Java Movie Poor Event; Only C2
    2018/06/11 23:12:11 261 30 155 268 1595 107.0*1 3.2e+13*2 3.8e+27*2 266 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2
    2018/06/12 00:12:05 267 22 108 0 0 -18.0*1 4.2e+13 2.5e+27 267 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2
    2018/06/13 07:48:05 260 22 143 221 613 16.7*1 2.2e+12 2.3e+26 259 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2
    2018/06/13 19:48:05 102 38 184 251 628 15.7*1 7.7e+12 1.3e+27 109 C2 C3 PHTX DST Java Movie Poor Event; Only C2
    2018/06/14 15:12:09 59 12 467 520 992 35.7*1 ---- ---- 67 C2 C3 PHTX DST Java Movie Poor Event; Only C2
    2018/06/14 15:36:05 256 76 370 592 506 9.1 2.4e+15 1.6e+30 254 C2 C3 PHTX DST Java Movie
    2018/06/15 15:48:05 271 52 179 145 0 -2.6*1 4.8e+13 7.7e+27 261 C2 C3 PHTX DST Java Movie Poor Event
    2018/06/15 17:20:07 77 34 185 311 340 6.0*1 2.8e+14 4.9e+28 77 C2 C3 PHTX DST Java Movie Poor Event
    2018/06/15 18:20:45 68 27 43 9 0 -3.2*1 1.7e+14*2 1.5e+27*2 69 C2 C3 PHTX DST Java Movie Poor Event; Only C2
    2018/06/17 11:00:06 266 63 80 118 177 1.3*1 1.4e+15 4.5e+28 266 C2 C3 PHTX DST Java Movie Very Poor Event
    2018/06/17 14:12:06 72 20 108 93 0 -3.4*1 1.0e+14 6.0e+27 70 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2
    2018/06/17 16:24:05 130 14 293 248 0 -20.5*1 ---- ---- 128 C2 C3 PHTX DST Java Movie Poor Event; Only C2
    2018/06/17 18:48:05 112 24 247 367 869 30.7*1 6.0e+13 1.8e+28 113 C2 C3 PHTX DST Java Movie Poor Event; Only C2
    2018/06/18 12:48:05 259 16 185 245 305 3.2*1 ---- ---- 261 C2 C3 PHTX DST Java Movie Poor Event
    2018/06/19 02:36:05 72 47 252 252 254 0.1*1 3.2e+14 1.0e+29 82 C2 C3 PHTX DST Java Movie Very Poor Event
    2018/06/19 07:00:06 251 16 136 164 265 2.5*1 ---- ---- 248 C2 C3 PHTX DST Java Movie Very Poor Event
    2018/06/19 16:36:06 73 40 198 59 0 -12.5*1 4.2e+13 8.2e+27 72 C2 C3 PHTX DST Java Movie Very Poor Event
    2018/06/19 22:36:05 71 46 393 416 403 1.1*1 9.7e+13 7.5e+28 75 C2 C3 PHTX DST Java Movie
    2018/06/20 19:36:05 267 59 137 282 299 3.9 2.4e+15 2.3e+29 264 C2 C3 PHTX DST Java Movie
    2018/06/22 03:12:09 261 8 193 367 552 13.7*1 ---- ---- 261 C2 C3 PHTX DST Java Movie Very Poor Event
    2018/06/22 09:24:20 107 13 287 234 0 -16.2*1 ---- ---- 107 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2
    2018/06/23 07:48:05 112 22 386 536 984 38.0*1 1.1e+14 8.3e+28 110 C2 C3 PHTX DST Java Movie Poor Event
    2018/06/24 21:24:05 259 32 56 43 0 -1.2*1 1.8e+14 2.8e+27 260 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2
    2018/06/25 02:12:05 267 43 161 146 0 -3.4*1 9.2e+13 1.2e+28 265 C2 C3 PHTX DST Java Movie Poor Event; Only C2
    2018/06/25 05:12:05 261 34 169 81 0 -15.3*1 5.2e+13 7.4e+27 265 C2 C3 PHTX DST Java Movie Poor Event; Only C2
    2018/06/30 18:48:05 99 82 102 128 210 1.6*1 3.5e+14 1.8e+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).