• 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
    2020/06/01 06:36:05 85 54 162 126 0 -7.8*1 1.3e+14 1.7e+28 88 C2 C3 PHTX DST Java Movie Poor Event; Only C2
    2020/06/01 16:24:07 79 65 248 216 0 -3.3*1 7.3e+14 2.3e+29 100 C2 C3 PHTX DST Java Movie
    2020/06/02 06:48:05 82 75 359 202 0 -31.0*1 3.4e+13 2.2e+28 100 C2 C3 PHTX DST Java Movie
    2020/06/02 12:00:05 82 23 255 328 667 17.1*1 1.0e+12 3.4e+26 85 C2 C3 PHTX DST Java Movie Poor Event; Only C2
    2020/06/03 06:48:05 251 40 244 232 0 -5.8*1 2.5e+13 7.4e+27 256 C2 C3 PHTX DST Java Movie Poor Event; Only C2
    2020/06/03 16:36:05 265 45 42 36 0 -0.3*1 4.4e+14 3.9e+27 264 C2 C3 PHTX DST Java Movie Only C2
    2020/06/03 18:48:05 78 25 197 209 261 1.4*1 4.7e+12 9.2e+26 78 C2 C3 PHTX DST Java Movie Poor Event
    2020/06/04 04:12:05 82 14 218 284 443 8.0*1 ---- ---- 79 C2 C3 PHTX DST Java Movie Poor Event
    2020/06/04 07:00:06 84 25 261 216 0 -11.1*1 4.7e+12 1.6e+27 83 C2 C3 PHTX DST Java Movie Poor Event
    2020/06/05 00:36:06 84 44 565 660 1190 50.0*1 9.6e+13*2 1.5e+29*2 97 C2 C3 PHTX DST Java Movie Only C2
    2020/06/06 00:00:06 77 41 121 98 0 -7.1*1 2.9e+13 2.1e+27 75 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2
    2020/06/06 03:12:11 257 25 208 301 384 5.7*1 1.2e+14 2.7e+28 250 C2 C3 PHTX DST Java Movie Poor Event
    2020/06/06 21:24:05 321 5 346 300 0 -35.9*1 ---- ---- 326 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2
    2020/06/12 14:00:05 68 61 185 300 298 3.5 2.7e+15 4.6e+29 66 C2 C3 PHTX DST Java Movie
    2020/06/12 21:24:06 249 51 150 177 314 3.4*1 2.2e+14 2.5e+28 249 C2 C3 PHTX DST Java Movie Poor Event; Only C2
    2020/06/13 12:36:05 68 21 190 276 305 3.5*1 4.5e+13 8.2e+27 84 C2 C3 PHTX DST Java Movie
    2020/06/14 01:25:40 250 53 134 136 167 0.4*1 5.3e+12 4.8e+26 246 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2
    2020/06/14 01:36:13 66 16 298 318 356 2.3*1 ---- ---- 70 C2 C3 PHTX DST Java Movie Poor Event
    2020/06/15 04:36:05 257 35 179 134 0 -4.0*1 3.5e+12 5.6e+26 256 C2 C3 PHTX DST Java Movie Very Poor Event
    2020/06/16 11:36:05 151 5 245 261 520 9.1*1 ---- ---- 149 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2
    2020/06/16 19:24:05 148 9 309 141 0 -81.5*1 ---- ---- 147 C2 C3 PHTX DST Java Movie Poor Event; Only C2
    2020/06/17 17:48:05 72 35 208 244 553 11.6*1 1.8e+13 3.8e+27 69 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2
    2020/06/18 08:00:06 253 26 205 241 507 9.4*1 7.7e+12 1.6e+27 247 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2
    2020/06/18 09:36:05 72 10 173 180 198 0.5*1 ---- ---- 75 C2 C3 PHTX DST Java Movie Very Poor Event
    2020/06/18 14:25:03 247 42 198 247 562 12.5*1 3.9e+13 7.7e+27 248 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2
    2020/06/19 08:00:05 82 26 380 417 693 15.1*1 5.4e+13 3.9e+28 83 C2 C3 PHTX DST Java Movie Poor Event; Only C2
    2020/06/19 10:48:05 77 32 334 359 474 5.6*1 4.7e+12 2.6e+27 82 C2 C3 PHTX DST Java Movie Poor Event
    2020/06/21 00:24:05 77 21 167 60 0 -42.1*1 2.5e+13 3.5e+27 82 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2
    2020/06/21 03:12:08 255 54 262 280 370 3.3*1 2.6e+14 8.8e+28 253 C2 C3 PHTX DST Java Movie Poor Event
    2020/06/21 06:24:05 73 44 456 502 633 9.6*1 3.6e+14 3.8e+29 71 C2 C3 PHTX DST Java Movie Poor Event
    2020/06/22 12:00:05 249 51 181 288 521 13.9*1 1.2e+14 1.9e+28 242 C2 C3 PHTX DST Java Movie Poor Event
    2020/06/22 19:36:05 242 90 173 224 240 1.9*1 3.8e+14 5.7e+28 245 C2 C3 PHTX DST Java Movie Poor Event
    2020/06/23 14:00:05 262 50 171 188 345 4.0*1 5.5e+13 8.0e+27 253 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2
    2020/06/23 21:48:05 73 48 293 346 490 7.5*1 2.6e+14 1.1e+29 79 C2 C3 PHTX DST Java Movie
    2020/06/24 05:48:05 81 47 78 91 175 1.1*1 5.3e+13 1.6e+27 74 C2 C3 PHTX DST Java Movie Poor Event; Only C2
    2020/06/24 06:00:05 254 18 142 150 174 0.5*1 ---- ---- 254 C2 C3 PHTX DST Java Movie Poor Event
    2020/06/24 12:25:20 77 49 171 154 0 -3.4*1 2.0e+13 2.9e+27 81 C2 C3 PHTX DST Java Movie Only C2
    2020/06/26 03:47:45 262 52 108 110 151 0.5*1 6.0e+13 3.5e+27 259 C2 C3 PHTX DST Java Movie Poor Event; Only C2
    2020/06/26 04:30:02 84 30 108 66 0 -9.7*1 9.8e+12 5.7e+26 83 C2 C3 PHTX DST Java Movie Poor Event; Only C2
    2020/06/26 06:12:11 186 8 157 119 0 -11.4*1 ---- ---- 188 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2
    2020/06/26 22:00:05 168 11 230 127 0 -28.1*1 ---- ---- 168 C2 C3 PHTX DST Java Movie Poor Event; Only C2
    2020/06/27 16:25:18 186 11 226 200 0 -14.1*1 ---- ---- 190 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2
    2020/06/28 04:12:05 328 8 558 893 2397 235.0*1 ---- ---- 327 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2
    2020/06/29 15:24:05 236 7 206 225 430 6.3*1 ---- ---- 245 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2
    2020/06/29 16:12:05 198 10 367 318 0 -28.7*1 ---- ---- 198 C2 C3 PHTX DST Java Movie Poor Event; Only C2
    2020/06/29 21:05:09 83 40 141 75 0 -7.8*1 7.7e+13 7.7e+27 87 C2 C3 PHTX DST Java Movie Poor Event
    2020/06/30 23:12:10 262 50 171 158 0 -4.7*1 9.9e+13 1.4e+28 243 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).