• 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
    2020/03/01 00:12:05 102 16 313 356 494 7.1*1 ---- ---- 108 C2 C3 PHTX DST Java Movie
    2020/03/01 03:48:07 267 35 206 285 766 23.7*1 9.1e+12 1.9e+27 262 C2 C3 PHTX DST Java Movie Poor Event; Only C2
    2020/03/01 11:36:05 99 17 154 158 215 1.0*1 ---- ---- 102 C2 C3 PHTX DST Java Movie Poor Event; Only C2
    2020/03/01 11:36:05 265 38 152 113 0 -12.6*1 2.4e+13 2.8e+27 262 C2 C3 PHTX DST Java Movie Poor Event; Only C2
    2020/03/02 00:48:05 187 3 318 --- --- --- ---- ---- 188 C2 C3 PHTX DST Java Movie Very Poor Event; Only 2 points; Only C2
    2020/03/02 09:12:09 86 11 159 168 192 0.6*1 ---- ---- 86 C2 C3 PHTX DST Java Movie Poor Event
    2020/03/02 16:00:05 271 45 65 73 131 0.6*1 3.8e+13 8.0e+26 274 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2
    2020/03/03 12:24:06 82 9 217 275 377 5.5*1 ---- ---- 86 C2 C3 PHTX DST Java Movie Poor Event
    2020/03/03 12:48:06 40 15 362 649 2122 187.4*1 ---- ---- 37 C2 C3 PHTX DST Java Movie Very Poor Event; Only 3 points; Only C2
    2020/03/03 13:48:05 284 75 212 168 0 -5.5*1 3.1e+13 7.0e+27 286 C2 C3 PHTX DST Java Movie Poor Event
    2020/03/03 23:12:11 284 14 159 205 491 10.3*1 ---- ---- 282 C2 C3 PHTX DST Java Movie Poor Event
    2020/03/04 02:24:03 100 23 38 25 0 -1.8*1 9.5e+13 6.9e+26 101 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2
    2020/03/05 01:25:41 138 8 251 149 0 -63.4*1 ---- ---- 134 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2
    2020/03/06 12:48:05 214 8 222 --- --- --- ---- ---- 219 C2 C3 PHTX DST Java Movie Very Poor Event; Only 2 points; Only C2
    2020/03/08 00:36:05 92 46 162 177 293 2.7*1 1.3e+14 1.7e+28 87 C2 C3 PHTX DST Java Movie Poor Event; Only C2
    2020/03/09 17:31:49 92 46 239 390 1034 44.7*1 7.4e+13 2.1e+28 90 C2 C3 PHTX DST Java Movie Poor Event; Only C2
    2020/03/09 19:48:05 165 8 308 612 2628 288.7*1 ---- ---- 161 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2
    2020/03/11 10:36:06 85 34 39 0 0 -3.5*1 6.3e+13 4.8e+26 86 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2
    2020/03/12 19:48:05 104 16 221 344 1063 46.4*1 ---- ---- 99 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2
    2020/03/14 10:48:05 91 28 81 30 0 -9.5*1 6.1e+13 2.0e+27 93 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2
    2020/03/15 17:24:05 81 35 183 265 446 7.7*1 1.7e+14 2.9e+28 86 C2 C3 PHTX DST Java Movie Poor Event
    2020/03/17 17:32:52 208 11 337 122 0 -190.9*1 ---- ---- 210 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2
    2020/03/17 19:00:07 261 33 180 235 550 11.8*1 7.1e+13 1.1e+28 258 C2 C3 PHTX DST Java Movie Poor Event; Only C2
    2020/03/19 22:24:05 95 81 117 264 239 2.5*1 2.7e+15 1.9e+29 90 C2 C3 PHTX DST Java Movie Poor Event
    2020/03/19 23:12:05 167 13 514 387 0 -119.9*1 ---- ---- 168 C2 C3 PHTX DST Java Movie Poor Event; Only C2
    2020/03/21 02:48:05 194 6 716 1133 2998 369.2*1 ---- ---- 197 C2 C3 PHTX DST Java Movie Very Poor Event; Only 3 points; Only C2
    2020/03/21 14:48:05 75 28 83 130 307 3.9*1 3.3e+14 1.1e+28 78 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2
    2020/03/22 15:42:12 82 26 217 251 294 2.9*1 1.9e+13 4.4e+27 84 C2 C3 PHTX DST Java Movie Very Poor Event; Only C3
    2020/03/23 09:24:06 86 14 172 264 416 7.0*1 ---- ---- 93 C2 C3 PHTX DST Java Movie Poor Event
    2020/03/23 14:12:07 88 14 176 230 301 3.0*1 ---- ---- 90 C2 C3 PHTX DST Java Movie Very Poor Event
    2020/03/23 21:24:05 92 20 168 199 232 1.4*1 2.3e+14 3.3e+28 87 C2 C3 PHTX DST Java Movie Poor Event
    2020/03/24 05:12:05 131 10 357 257 0 -87.3*1 ---- ---- 128 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2
    2020/03/24 11:48:05 334 10 262 348 1205 59.5*1 ---- ---- 336 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2
    2020/03/25 20:00:05 77 10 83 99 350 4.9*1 ---- ---- 80 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2
    2020/03/29 15:16:26 256 17 228 220 0 -2.9*1 ---- ---- 259 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2
    2020/03/29 22:36:05 141 12 188 343 1299 70.2*1 ---- ---- 137 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2
    2020/03/31 00:12:06 171 7 570 420 0 -141.7*1 ---- ---- 172 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2
    2020/03/31 17:00:05 250 24 252 341 764 23.1*1 8.3e+13 2.6e+28 254 C2 C3 PHTX DST Java Movie 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).