• 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
    2020/12/01 07:12:05 101 148 735 903 821 13.4 3.4e+15*2 9.1e+30*2 63 C2 C3 PHTX DST Java Movie Partial Halo
    2020/12/01 20:57:31 81 31 194 250 556 12.0*1 6.3e+12 1.2e+27 82 C2 C3 PHTX DST Java Movie Poor Event; Only C2
    2020/12/01 21:24:05 303 8 505 682 1755 124.9*1 ---- ---- 301 C2 C3 PHTX DST Java Movie Poor Event; Only C2
    2020/12/01 23:12:11 217 6 427 482 1395 76.2*1 ---- ---- 219 C2 C3 PHTX DST Java Movie Very Poor Event; Only 3 points; Only C2
    2020/12/02 02:00:05 97 69 157 153 59 -0.9*1 4.5e+13 5.5e+27 93 C2 C3 PHTX DST Java Movie Poor Event; Only C2
    2020/12/02 03:24:06 277 25 214 290 785 24.6*1 3.7e+13 8.6e+27 273 C2 C3 PHTX DST Java Movie Poor Event; Only C2
    2020/12/02 04:00:06 81 16 162 140 0 -4.2*1 ---- ---- 77 C2 C3 PHTX DST Java Movie Poor Event; Only C2
    2020/12/02 19:48:05 122 17 154 137 0 -2.6*1 ---- ---- 112 C2 C3 PHTX DST Java Movie Poor Event
    2020/12/03 00:24:05 319 13 514 400 0 -52.9*1 ---- ---- 310 C2 C3 PHTX DST Java Movie Poor Event
    2020/12/03 05:00:05 116 11 184 76 0 -19.0*1 ---- ---- 114 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2
    2020/12/03 11:12:05 125 114 233 240 245 0.4*1 2.0e+15 5.3e+29 117 C2 C3 PHTX DST Java Movie Poor Event
    2020/12/04 03:24:05 120 51 203 197 186 -0.4*1 2.3e+14 4.8e+28 110 C2 C3 PHTX DST Java Movie Poor Event
    2020/12/04 18:00:05 301 19 256 213 0 -14.0*1 ---- ---- 300 C2 C3 PHTX DST Java Movie Poor Event; Only C2
    2020/12/05 02:24:05 101 48 277 327 595 12.4*1 4.1e+13 1.6e+28 104 C2 C3 PHTX DST Java Movie Poor Event; Only C2
    2020/12/05 04:24:05 6 5 323 421 1508 93.5*1 ---- ---- 5 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2
    2020/12/05 05:24:05 51 9 281 461 1301 69.8*1 ---- ---- 56 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2
    2020/12/05 05:36:05 306 24 324 480 1149 54.4*1 5.1e+13 2.7e+28 302 C2 C3 PHTX DST Java Movie Poor Event; Only C2
    2020/12/05 17:24:05 108 12 381 488 996 41.2*1 ---- ---- 114 C2 C3 PHTX DST Java Movie Very Poor Event
    2020/12/05 20:12:06 106 33 237 172 0 -36.6*1 4.5e+12 1.3e+27 111 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2
    2020/12/06 04:48:05 260 13 125 203 506 10.7*1 ---- ---- 258 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2
    2020/12/06 17:00:05 184 13 309 369 828 26.2*1 ---- ---- 182 C2 C3 PHTX DST Java Movie Poor Event; Only C2
    2020/12/06 18:48:05 99 53 186 189 206 0.4*1 4.6e+14 8.0e+28 105 C2 C3 PHTX DST Java Movie Poor Event
    2020/12/07 08:00:06 275 57 128 157 247 2.3*1 1.9e+14 1.6e+28 274 C2 C3 PHTX DST Java Movie Very Poor Event
    2020/12/07 14:36:05 252 37 115 145 488 9.6*1 1.8e+14 1.2e+28 250 C2 C3 PHTX DST Java Movie Poor Event; Only C2
    2020/12/07 16:24:06 Halo 360 1407 1308 1377 -16.4 4.6e+15*2 4.5e+31*2 194 C2 C3 PHTX DST Java Movie
    2020/12/09 08:36:05 104 33 231 273 525 10.0*1 6.9e+13 1.9e+28 110 C2 C3 PHTX DST Java Movie Poor Event; Only C2
    2020/12/09 17:36:05 295 35 271 245 190 -2.2*1 5.5e+12 2.0e+27 295 C2 C3 PHTX DST Java Movie Poor Event
    2020/12/09 18:12:05 254 41 62 66 100 0.3*1 8.2e+14 1.6e+28 254 C2 C3 PHTX DST Java Movie Poor Event; Only C2
    2020/12/10 09:36:05 260 43 221 244 302 2.3*1 2.3e+14 5.6e+28 252 C2 C3 PHTX DST Java Movie Poor Event
    2020/12/10 16:48:05 252 28 274 300 390 4.0*1 1.7e+13 6.4e+27 253 C2 C3 PHTX DST Java Movie Poor Event
    2020/12/11 00:24:05 Halo 360 326 188 0 -17.5*1 3.4e+14*2 1.8e+29*2 125 C2 C3 PHTX DST Java Movie
    2020/12/11 05:36:06 107 17 124 84 0 -14.5*1 ---- ---- 113 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2
    2020/12/11 08:48:26 41 8 346 623 2406 245.4*1 ---- ---- 43 C2 C3 PHTX DST Java Movie Very Poor Event; Only 3 points; Only C2
    2020/12/11 09:48:05 121 7 282 305 661 15.3*1 ---- ---- 120 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2
    2020/12/11 19:09:13 295 93 336 350 378 1.6*1 5.5e+14 3.1e+29 305 C2 C3 PHTX DST Java Movie
    2020/12/12 02:24:05 116 35 154 132 0 -7.3*1 5.9e+13 6.9e+27 115 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2
    2020/12/12 04:00:05 118 47 179 173 92 -1.1*1 2.9e+14 4.6e+28 115 C2 C3 PHTX DST Java Movie Poor Event; Only C2
    2020/12/12 17:12:06 102 42 217 151 0 -25.3*1 9.9e+13 2.3e+28 110 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2
    2020/12/13 04:36:05 111 14 216 280 392 6.0*1 ---- ---- 114 C2 C3 PHTX DST Java Movie Very Poor Event
    2020/12/13 09:24:05 100 106 461 360 310 -9.0*1 1.6e+15 1.7e+30 103 C2 C3 PHTX DST Java Movie
    2020/12/13 14:36:06 288 7 310 510 1403 81.0*1 ---- ---- 292 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2
    2020/12/13 22:00:05 115 11 201 258 367 5.0*1 ---- ---- 119 C2 C3 PHTX DST Java Movie Very Poor Event
    2020/12/14 08:24:05 121 80 41 52 142 0.8*1 2.0e+15 1.7e+28 114 C2 C3 PHTX DST Java Movie Only C2
    2020/12/14 15:12:10 121 88 437 480 481 3.3 3.0e+15 2.9e+30 127 C2 C3 PHTX DST Java Movie
    2020/12/14 22:36:05 286 19 360 443 653 14.5*1 ---- ---- 284 C2 C3 PHTX DST Java Movie Poor Event
    2020/12/16 05:48:06 111 10 250 426 886 37.1*1 ---- ---- 111 C2 C3 PHTX DST Java Movie Very Poor Event
    2020/12/16 07:36:05 132 13 193 205 283 2.2*1 ---- ---- 124 C2 C3 PHTX DST Java Movie Very Poor Event
    2020/12/16 09:12:11 287 45 217 345 1217 61.5*1 4.5e+13 1.1e+28 290 C2 C3 PHTX DST Java Movie Poor Event; Only C2
    2020/12/17 04:36:05 136 18 575 696 1235 54.3*1 ---- ---- 135 C2 C3 PHTX DST Java Movie Poor Event; Only C2
    2020/12/17 05:24:05 284 96 332 470 437 6.3 4.4e+15 2.4e+30 299 C2 C3 PHTX DST Java Movie
    2020/12/17 11:12:05 140 11 479 547 965 31.7*1 ---- ---- 138 C2 C3 PHTX DST Java Movie Only C2
    2020/12/17 19:00:05 93 31 111 113 138 0.3*1 2.0e+14 1.2e+28 94 C2 C3 PHTX DST Java Movie Poor Event; Only C2
    2020/12/18 00:48:05 97 41 91 108 259 2.5*1 2.7e+14 1.1e+28 90 C2 C3 PHTX DST Java Movie Poor Event; Only C2
    2020/12/18 00:48:05 279 75 127 147 300 3.3*1 5.8e+13 4.7e+27 291 C2 C3 PHTX DST Java Movie Poor Event; Only C2
    2020/12/19 03:12:09 300 21 145 113 0 -4.4*1 1.6e+12 1.7e+26 296 C2 C3 PHTX DST Java Movie Poor Event; Only C2
    2020/12/22 12:12:05 92 23 180 370 2067 174.2*1 8.3e+12*2 1.3e+27*2 95 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2
    2020/12/23 02:12:05 301 9 325 382 755 20.9*1 ---- ---- 292 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2
    2020/12/23 06:48:05 141 11 203 359 1324 72.2*1 ---- ---- 141 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2
    2020/12/23 09:24:05 141 16 36 73 402 6.7*1 ---- ---- 139 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2
    2020/12/23 17:24:05 93 18 274 287 291 0.7*1 ---- ---- 107 C2 C3 PHTX DST Java Movie Very Poor Event
    2020/12/24 06:12:05 356 14 509 517 652 7.3*1 ---- ---- 356 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2
    2020/12/24 11:24:05 277 39 174 267 914 34.0*1 3.3e+13 5.0e+27 272 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2
    2020/12/24 13:36:21 88 30 142 4 0 -74.3*1 2.7e+13 2.7e+27 92 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2
    2020/12/24 16:00:05 117 9 306 285 117 -4.2*1 ---- ---- 112 C2 C3 PHTX DST Java Movie Very Poor Event
    2020/12/25 01:36:19 117 19 233 218 121 -2.1*1 ---- ---- 118 C2 C3 PHTX DST Java Movie Very Poor Event
    2020/12/25 20:24:05 64 12 247 194 0 -21.1*1 ---- ---- 66 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2
    2020/12/26 08:12:06 82 17 210 280 428 7.3*1 ---- ---- 89 C2 C3 PHTX DST Java Movie Poor Event
    2020/12/26 11:48:05 111 75 118 173 415 7.2*1 1.4e+13 9.5e+26 108 C2 C3 PHTX DST Java Movie Poor Event; Only C2
    2020/12/26 12:36:05 275 16 162 190 385 6.2*1 ---- ---- 271 C2 C3 PHTX DST Java Movie Very Poor Event
    2020/12/26 21:12:09 96 54 247 361 400 6.0*1 2.0e+13 6.1e+27 101 C2 C3 PHTX DST Java Movie Very Poor Event
    2020/12/27 01:25:44 278 32 214 254 359 4.1*1 3.5e+14 8.1e+28 269 C2 C3 PHTX DST Java Movie Poor Event
    2020/12/27 02:24:05 84 29 263 376 883 32.1*1 7.9e+12 2.7e+27 94 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2
    2020/12/27 04:36:06 76 9 287 336 388 3.9*1 ---- ---- 86 C2 C3 PHTX DST Java Movie Very Poor Event
    2020/12/27 15:36:05 87 11 357 433 624 15.0*1 ---- ---- 92 C2 C3 PHTX DST Java Movie Very Poor Event
    2020/12/27 15:48:06 308 10 307 445 1760 127.4*1 ---- ---- 301 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2
    2020/12/27 16:12:05 87 9 222 330 697 19.9*1 ---- ---- 89 C2 C3 PHTX DST Java Movie Very Poor Event
    2020/12/28 00:24:05 269 22 167 167 157 -0.1*1 5.1e+13 7.1e+27 270 C2 C3 PHTX DST Java Movie Poor Event; Only C2
    2020/12/28 16:00:05 208 13 348 155 0 -133.9*1 ---- ---- 209 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2
    2020/12/28 19:00:05 78 21 219 202 0 -7.6*1 1.4e+13 3.2e+27 82 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2
    2020/12/29 05:24:05 266 44 186 217 432 6.7*1 1.3e+14 2.2e+28 267 C2 C3 PHTX DST Java Movie Poor Event; Only C2
    2020/12/30 12:00:05 279 8 240 163 0 -29.8*1 ---- ---- 280 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2
    2020/12/30 23:24:05 281 53 112 112 110 -0.0*1 1.2e+13 7.8e+26 286 C2 C3 PHTX DST Java Movie Very 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).