• 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
    1996/04/02 02:36:21 267 37 192 263 246 2.7*1 7.4e+14 1.4e+29 263 C2 C3 SXT PHTX DST Java Movie Poor Event; Only C3
    1996/04/02 23:08:01 262 40 272 277 275 0.2*1 8.3e+14 3.1e+29 262 C2 C3 SXT PHTX DST Java Movie
    1996/04/03 04:31:16 80 48 28 18 0 -0.5*1 7.5e+13 2.9e+26 79 C2 C3 SXT PHTX DST Java Movie Poor Event; Only C2
    1996/04/03 14:30:40 257 36 ---- --- --- --- 5.3e+14*2 2.7e+24*2 255 C2 C3 SXT PHTX DST Java Movie Very Poor Event; Only C2; Unable to measure
    1996/04/05 06:11:28 273 47 323 272 367 -6.7*1 1.3e+15*2 6.7e+29*2 271 C2 C3 SXT PHTX DST Java Movie Only 3 points; Only C3
    1996/04/05 14:16:18 26 4 322 270 0 -13.0*1 ---- ---- 34 C2 C3 SXT PHTX DST Java Movie Poor Event; Only 3 points; Only C2
    1996/04/06 00:51:12 268 37 293 419 350 8.7*1 8.8e+13*2 3.8e+28*2 270 C2 C3 SXT PHTX DST Java Movie Only C3
    1996/04/06 10:52:30 260 25 25 29 86 0.3*1 3.8e+13*2 1.2e+26*2 260 C2 C3 SXT PHTX DST Java Movie Very Poor Event; Only C2
    1996/04/07 06:59:24 258 42 324 481 488 9.2*1 4.3e+14 2.3e+29 269 C2 C3 SXT PHTX DST Java Movie
    1996/04/08 01:03:21 266 29 314 279 330 -3.4*1 2.2e+12*2 1.1e+27*2 269 C2 C3 SXT PHTX DST Java Movie Poor Event; Only 3 points; Only C3
    1996/04/08 04:12:26 258 15 124 94 0 -1.3*1 ---- ---- 262 C2 C3 SXT PHTX DST Java Movie
    1996/04/08 07:53:42 105 22 128 161 227 2.0*1 5.0e+13*2 4.1e+27*2 99 C2 C3 SXT PHTX DST Java Movie Poor Event
    1996/04/09 11:07:13 266 25 35 33 0 -0.3*1 ---- ---- 267 C2 C3 SXT PHTX DST Java Movie Very Poor Event; Only 3 points; Only C2
    1996/04/11 11:17:09 166 7 212 258 563 12.2*1 ---- ---- 164 C2 C3 SXT PHTX DST Java Movie Very Poor Event; Only 3 points; Only C2
    1996/04/11 11:17:09 88 49 272 278 303 0.9*1 2.6e+14 9.5e+28 89 C2 C3 SXT PHTX DST Java Movie Poor Event
    1996/04/12 04:45:24 275 57 100 117 154 0.8*1 5.2e+14*2 2.6e+28*2 272 C2 C3 SXT PHTX DST Java Movie Very Poor Event
    1996/04/12 16:21:55 263 55 21 38 117 0.6*1 2.1e+14 4.6e+26 266 C2 C3 SXT PHTX DST Java Movie Very Poor Event; Only C2
    1996/04/13 00:52:12 265 39 157 171 190 1.0*1 4.9e+13*2 6.0e+27*2 266 C2 C3 SXT PHTX DST Java Movie Poor Event; Only C3
    1996/04/13 04:02:02 262 46 114 115 116 0.0*1 1.5e+13 9.7e+26 253 C2 C3 SXT PHTX DST Java Movie
    1996/04/13 11:56:56 93 26 18 33 154 1.0*1 1.5e+13*2 2.4e+25*2 100 C2 C3 SXT PHTX DST Java Movie Very Poor Event; Only C2
    1996/04/14 12:57:26 97 22 7 3 0 -0.1*1 3.3e+14 8.0e+25 101 C2 SXT PHTX DST Java Movie Very Poor Event; Only C2
    1996/04/15 03:00:25 98 22 97 82 0 -1.4*1 1.8e+14*2 8.3e+27*2 96 C2 C3 SXT PHTX DST Java Movie Only 3 points; Only C2
    1996/04/15 10:53:48 282 17 ---- --- --- --- ---- ---- 275 C2 C3 SXT PHTX DST Java Movie Very Poor Event; Only C2; Unable to measure
    1996/04/16 15:34:39 101 33 89 162 287 3.5*1 7.2e+13 2.9e+27 99 C2 C3 SXT PHTX DST Java Movie Very Poor Event
    1996/04/17 09:49:57 94 13 225 244 272 1.9*1 ---- ---- 94 C2 C3 SXT PHTX DST Java Movie Poor Event; Only C3
    1996/04/18 03:09:03 286 39 20 30 106 0.5*1 2.8e+14 5.5e+26 283 C2 C3 SXT PHTX DST Java Movie Very Poor Event; Only C2
    1996/04/23 03:00:05 273 45 30 26 0 -0.4*1 7.3e+13 3.3e+26 271 C2 C3 SXT PHTX DST Java Movie Very Poor Event; Only C2
    1996/04/24 13:48:52 268 54 52 50 44 -0.0*1 8.8e+14 1.2e+28 267 C2 C3 SXT PHTX DST Java Movie
    1996/04/25 11:30:16 272 68 186 208 189 1.1*1 2.1e+15*2 3.7e+29*2 284 C2 C3 SXT PHTX DST Java Movie Very Poor Event; Only C3
    1996/04/26 07:21:43 273 45 32 55 174 1.3*1 6.4e+13 3.3e+26 267 C2 C3 SXT PHTX DST Java Movie Very Poor Event; Only C2
    1996/04/27 06:13:06 95 49 18 20 51 0.1*1 ---- ---- 100 C2 C3 SXT PHTX DST Java Movie Poor Event; Only C2
    1996/04/28 03:03:33 266 23 25 29 71 0.2*1 ---- ---- 265 C2 C3 SXT PHTX DST Java Movie Very Poor Event; Only 3 points; Only C2
    1996/04/29 14:38:48 Halo (S) 360 65 --- --- --- ---- ---- 149 C2 C3 SXT PHTX DST Java Movie Faint; Very Poor Event; Only 2 points; Only C2
    1996/04/30 13:43:42 92 56 112 129 172 1.0*1 5.6e+14 3.5e+28 89 C2 C3 SXT PHTX DST Java Movie

    *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).