• 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
    1996/06/06 23:30:34 274 53 414 452 436 2.2*1 1.7e+15 1.4e+30 271 C2 C3 195 SXT PHTX DST Java Movie UVCS
    1996/06/16 11:10:53 87 61 237 280 427 6.2*1 8.4e+14 2.4e+29 83 C2 C3 195 SXT PHTX DST Java Movie
    1996/06/17 02:23:41 85 55 304 262 166 -3.9*1 6.8e+14 3.2e+29 81 C2 C3 195 SXT PHTX DST Java Movie Poor Event
    1996/06/18 03:25:15 239 41 44 39 0 -0.4*1 5.2e+13 5.0e+26 244 C2 C3 195 SXT PHTX DST Java Movie very faint; Poor Event; Only C2
    1996/06/18 17:28:50 84 95 64 61 0 -0.4*1 1.2e+14 2.4e+27 79 C2 C3 195 SXT PHTX DST Java Movie UVCS Poor Event; Only C2
    1996/06/19 11:59:44 90 57 214 163 0 -12.8*1 5.2e+14*2 1.2e+29*2 80 C2 C3 195 SXT PHTX DST Java Movie UVCS Poor Event; Only C2
    1996/06/22 00:39:09 97 41 256 302 465 8.1*1 6.8e+14*2 2.2e+29*2 98 C2 C3 195 SXT PHTX DST Java Movie
    1996/06/23 23:39:16 82 8 193 209 428 6.3*1 ---- ---- 84 C2 C3 195 SXT PHTX DST Java Movie Only 3 points; 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).