• 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
    2021/02/01 09:12:10 249 13 216 324 1341 74.6*1 ---- ---- 253 C2 C3 PHTX DST Java Movie Poor Event; Only C2
    2021/02/01 22:00:06 345 9 385 326 0 -21.4*1 ---- ---- 341 C2 C3 PHTX DST Java Movie Poor Event; Only C2
    2021/02/02 02:48:06 344 10 335 557 2191 196.4*1 ---- ---- 342 C2 C3 PHTX DST Java Movie Poor Event; Only 3 points; Only C2
    2021/02/02 13:25:43 120 10 223 273 717 20.2*1 ---- ---- 116 C2 C3 PHTX DST Java Movie Poor Event; Only C2
    2021/02/02 14:48:05 65 13 287 113 0 -69.0*1 ---- ---- 71 C2 C3 PHTX DST Java Movie Poor Event; Only C2
    2021/02/03 08:48:05 285 94 147 354 343 5.0 4.0e+15 4.4e+29 290 C2 C3 PHTX DST Java Movie
    2021/02/04 04:36:05 351 6 332 410 1355 74.2*1 ---- ---- 349 C2 C3 PHTX DST Java Movie Poor Event; Only C2
    2021/02/04 16:48:05 85 40 240 251 277 1.0*1 3.4e+14 9.7e+28 86 C2 C3 PHTX DST Java Movie Poor Event
    2021/02/06 05:24:05 288 7 177 219 497 9.7*1 ---- ---- 288 C2 C3 PHTX DST Java Movie Poor Event; Only C2
    2021/02/07 00:00:05 285 12 167 256 411 7.0*1 ---- ---- 284 C2 C3 PHTX DST Java Movie Poor Event
    2021/02/07 07:12:05 148 30 169 260 499 10.1*1 1.1e+13 1.6e+27 132 C2 C3 PHTX DST Java Movie Poor Event
    2021/02/07 10:48:05 283 9 154 268 499 10.6*1 ---- ---- 283 C2 C3 PHTX DST Java Movie Poor Event
    2021/02/08 01:25:42 281 11 150 159 218 1.3*1 ---- ---- 282 C2 C3 PHTX DST Java Movie Very Poor Event
    2021/02/08 09:12:10 66 12 143 147 200 0.9*1 ---- ---- 68 C2 C3 PHTX DST Java Movie Poor Event; Only C2
    2021/02/09 13:25:42 241 88 79 152 351 5.2*1 2.3e+14 7.1e+27 232 C2 C3 PHTX DST Java Movie Poor Event; Only C2
    2021/02/10 02:36:05 89 91 66 133 201 1.7*1 1.2e+15 2.6e+28 96 C2 C3 PHTX DST Java Movie Poor Event
    2021/02/11 14:12:34 98 11 292 343 555 11.8*1 ---- ---- 100 C2 C3 PHTX DST Java Movie Very Poor Event
    2021/02/11 19:12:05 129 13 514 622 732 14.8*1 ---- ---- 126 C2 C3 PHTX DST Java Movie
    2021/02/12 12:12:06 277 82 232 436 364 5.8*1 4.7e+15 1.3e+30 267 C2 C3 PHTX DST Java Movie Poor Event
    2021/02/13 19:24:05 270 13 268 417 517 10.5*1 ---- ---- 270 C2 C3 PHTX DST Java Movie
    2021/02/14 20:36:05 239 13 395 646 2011 168.8*1 ---- ---- 242 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2
    2021/02/15 04:12:05 96 10 214 344 1311 71.0*1 ---- ---- 99 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2
    2021/02/15 14:24:06 99 22 203 292 620 15.2*1 1.8e+14 3.7e+28 95 C2 C3 PHTX DST Java Movie Poor Event; Only C2
    2021/02/15 16:12:05 118 15 144 246 619 16.8*1 ---- ---- 115 C2 C3 PHTX DST Java Movie Very Poor Event
    2021/02/16 04:48:05 132 27 149 92 0 -13.6*1 1.0e+13 1.2e+27 127 C2 C3 PHTX DST Java Movie Poor Event; Only C2
    2021/02/16 15:24:05 125 29 617 628 641 1.7*1 3.8e+14 7.2e+29 129 C2 C3 PHTX DST Java Movie
    2021/02/17 09:24:05 285 18 209 176 0 -3.5*1 ---- ---- 278 C2 C3 PHTX DST Java Movie Poor Event
    2021/02/17 10:12:07 85 12 241 220 0 -7.6*1 ---- ---- 89 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2
    2021/02/17 23:12:10 120 25 577 753 1229 56.3*1 1.3e+14 2.1e+29 125 C2 C3 PHTX DST Java Movie Poor Event
    2021/02/18 06:48:05 231 6 254 236 0 -10.1*1 ---- ---- 239 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2
    2021/02/19 00:12:05 84 21 67 70 106 0.3*1 6.3e+13 1.4e+27 90 C2 C3 PHTX DST Java Movie Poor Event; Only C2
    2021/02/19 09:24:21 269 76 89 203 252 2.8*1 1.4e+15 5.4e+28 270 C2 C3 PHTX DST Java Movie Poor Event
    2021/02/20 03:48:05 92 11 371 408 418 3.1*1 ---- ---- 93 C2 C3 PHTX DST Java Movie Very Poor Event
    2021/02/20 11:24:05 90 207 555 821 710 16.7 4.4e+15*2 6.9e+30*2 114 C2 C3 PHTX DST Java Movie Partial Halo
    2021/02/21 08:24:06 90 75 295 510 429 7.0 3.5e+15 1.5e+30 90 C2 C3 PHTX DST Java Movie
    2021/02/21 14:36:05 248 12 554 797 1951 156.1*1 ---- ---- 251 C2 C3 PHTX DST Java Movie Poor Event; Only C2
    2021/02/22 07:48:05 298 10 165 219 587 14.0*1 ---- ---- 293 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2
    2021/02/22 09:48:05 263 24 150 134 0 -5.2*1 3.5e+13 3.9e+27 261 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2
    2021/02/22 12:24:05 142 44 102 193 406 6.8*1 3.8e+14 2.0e+28 144 C2 C3 PHTX DST Java Movie Poor Event; Only C2
    2021/02/23 00:24:05 255 83 219 372 342 4.7 6.1e+15 1.5e+30 263 C2 C3 PHTX DST Java Movie
    2021/02/23 03:24:05 133 11 404 373 0 -12.6*1 ---- ---- 126 C2 C3 PHTX DST Java Movie Poor Event; Only C2
    2021/02/23 15:12:10 119 22 239 338 1046 44.3*1 1.3e+13 3.7e+27 117 C2 C3 PHTX DST Java Movie Poor Event; Only C2
    2021/02/24 01:36:15 112 20 178 192 285 2.5*1 1.0e+14 1.6e+28 114 C2 C3 PHTX DST Java Movie Poor Event
    2021/02/24 09:12:11 94 75 220 156 0 -5.3*1 3.5e+14 8.5e+28 105 C2 C3 PHTX DST Java Movie Poor Event
    2021/02/24 15:05:48 70 61 216 461 448 8.9*1 6.9e+14 1.6e+29 73 C2 C3 PHTX DST Java Movie Poor Event
    2021/02/24 20:56:53 117 13 444 492 497 3.8*1 ---- ---- 118 C2 C3 PHTX DST Java Movie Poor Event
    2021/02/26 08:12:05 275 77 175 172 167 -0.2*1 1.1e+15 1.7e+29 272 C2 C3 PHTX DST Java Movie Poor Event
    2021/02/26 18:00:06 226 8 168 153 0 -5.8*1 ---- ---- 228 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2
    2021/02/27 00:12:05 89 21 241 196 0 -8.1*1 1.9e+14 5.6e+28 93 C2 C3 PHTX DST Java Movie Poor Event
    2021/02/27 05:24:05 269 21 178 216 432 6.9*1 9.9e+13 1.6e+28 266 C2 C3 PHTX DST Java Movie Poor Event
    2021/02/27 13:48:06 274 67 132 336 513 11.0*1 9.6e+14 8.3e+28 275 C2 C3 PHTX DST Java Movie Poor Event
    2021/02/27 14:24:05 275 23 243 243 246 0.1*1 1.8e+14 5.2e+28 272 C2 C3 PHTX DST Java Movie Poor Event
    2021/02/27 17:12:05 222 6 510 647 882 26.7*1 ---- ---- 227 C2 C3 PHTX DST Java Movie Poor Event
    2021/02/27 20:48:06 272 64 100 160 214 1.9*1 2.0e+15 1.0e+29 273 C2 C3 PHTX DST Java Movie Poor Event
    2021/02/28 07:12:06 270 75 227 550 459 8.7 8.6e+15 2.2e+30 262 C2 C3 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).