• 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
    1997/09/02 19:29:34 267 62 71 44 0 -3.0*1 1.4e+14 3.6e+27 261 C2 C3 195 SXT PHTX DST Java Movie Very Poor Event
    1997/09/05 23:03:13 110 81 361 440 360 10.5 3.6e+14 2.3e+29 99 C2 195 SXT PHTX DST Java Movie Only C3
    1997/09/06 02:24:35 296 17 264 310 749 22.0*1 ---- ---- 282 C2 C3 195 SXT PHTX DST Java Movie Very Poor Event; Only 3 points; Only C2
    1997/09/08 03:09:36 228 72 115 87 0 -6.5*1 6.1e+13 4.0e+27 243 C2 C3 195 SXT PHTX DST Java Movie Very Poor Event; Only C2
    1997/09/08 04:20:05 79 42 169 111 0 -21.6*1 5.5e+13*2 7.8e+27*2 80 C2 C3 195 SXT PHTX DST Java Movie Poor Event; Only C2
    1997/09/08 16:27:13 268 34 185 195 270 1.7*1 ---- ---- 272 C2 C3 195 SXT PHTX DST Java Movie Very Poor Event; Only C2
    1997/09/09 00:29:29 259 77 342 268 0 -14.1*1 3.5e+14 2.1e+29 264 C2 C3 195 SXT PHTX DST Java Movie
    1997/09/09 02:41:23 271 81 69 153 231 2.4*1 1.1e+15 2.6e+28 265 C2 C3 195 SXT PHTX DST Java Movie Poor Event
    1997/09/09 02:41:23 107 92 240 270 435 6.4*1 1.4e+14 3.9e+28 112 C2 C3 195 SXT PHTX DST Java Movie
    1997/09/09 10:26:20 99 106 108 185 209 1.8*1 2.1e+15 1.2e+29 79 C2 C3 195 SXT PHTX DST Java Movie Poor Event
    1997/09/09 20:06:02 284 101 726 635 692 -7.4 3.4e+15 9.1e+30 303 C2 C3 195 SXT PHTX DST Java Movie
    1997/09/10 17:13:01 110 60 ---- --- --- --- 9.5e+12*2 4.8e+22*2 103 C2 C3 195 SXT PHTX DST Java Movie Very Poor Event; Only C2; Unable to measure
    1997/09/10 23:33:52 25 6 405 722 2180 196.6*1 ---- ---- 30 C2 C3 195 SXT PHTX DST Java Movie Very Poor Event; Only 3 points; Only C2
    1997/09/13 06:25:38 248 51 231 256 292 1.9*1 1.5e+14 4.1e+28 256 C2 C3 195 SXT PHTX DST Java Movie Poor Event
    1997/09/13 11:33:34 87 46 418 267 0 -35.4*1 2.1e+14*2 1.8e+29*2 87 C2 C3 195 SXT PHTX DST Java Movie Poor Event
    1997/09/13 17:50:05 298 46 170 199 337 4.1*1 2.1e+14 3.0e+28 292 C2 C3 195 SXT PHTX DST Java Movie UVCS Poor Event
    1997/09/14 00:57:07 40 7 152 10 0 -30.3*1 ---- ---- 52 C2 C3 195 SXT PHTX DST Java Movie Very Poor Event; Only 3 points; Only C2
    1997/09/14 01:33:32 93 82 394 402 401 0.5*1 1.8e+15 1.4e+30 103 C2 C3 195 SXT PHTX DST Java Movie
    1997/09/14 12:55:05 285 10 279 244 173 -2.8*1 ---- ---- 270 C2 C3 195 SXT PHTX DST Java Movie Poor Event
    1997/09/14 14:48:05 83 35 117 99 0 -5.3*1 1.1e+13*2 7.3e+26*2 84 C2 C3 195 SXT PHTX DST Java Movie Very Poor Event; Only C2
    1997/09/15 05:41:05 90 21 265 491 522 13.4*1 1.7e+12 6.1e+26 93 C2 C3 195 SXT PHTX DST Java Movie
    1997/09/15 09:53:05 253 50 136 207 493 10.4*1 2.2e+14 2.1e+28 258 C2 C3 195 SXT PHTX DST Java Movie Very Poor Event; Only C2
    1997/09/15 20:20:06 90 34 321 96 0 -73.6*1 3.4e+13 1.8e+28 94 C2 C3 195 SXT PHTX DST Java Movie Very Poor Event
    1997/09/16 04:20:05 78 72 252 284 334 2.6 1.1e+15 3.6e+29 75 C2 C3 195 SXT PHTX DST Java Movie
    1997/09/16 08:30:07 264 37 202 276 625 15.7*1 4.9e+13 1.0e+28 276 C2 C3 195 SXT PHTX DST Java Movie Very Poor Event; Only C2
    1997/09/16 17:49:11 92 37 250 285 335 2.8*1 4.4e+13 1.4e+28 94 C2 C3 195 SXT PHTX DST Java Movie Poor Event
    1997/09/17 11:34:05 259 68 447 460 493 2.3*1 5.2e+14 5.2e+29 269 C2 C3 195 SXT PHTX DST Java Movie Poor Event
    1997/09/17 12:26:05 268 56 232 160 0 -13.6 3.4e+13 9.1e+27 269 C2 C3 195 SXT PHTX DST Java Movie Newly inserted on 2008/11/14
    1997/09/17 18:18:06 269 46 613 --- --- --- 3.7e+14*2 7.0e+29*2 270 C2 C3 195 SXT PHTX DST Java Movie Only 2 points; Only C2
    1997/09/17 20:28:48 Halo (OA) 360 377 377 377 -0.0 2.6e+15*2 1.9e+30*2 263 C2 C3 195 SXT PHTX DST Java Movie Only C3
    1997/09/18 06:35:05 303 20 374 411 466 4.4 4.4e+14 3.1e+29 297 C2 C3 195 SXT PHTX DST Java Movie
    1997/09/18 16:53:07 270 38 112 --- --- --- 1.2e+13*2 7.7e+26*2 275 C2 C3 195 SXT PHTX DST Java Movie Newly inserted on 2006/01/09; Poor Event; Only 2 points; Only C2
    1997/09/18 18:03:07 267 55 285 166 0 -48.3*1 ---- ---- 268 C2 C3 195 SXT PHTX DST Java Movie Only 3 points; Only C2
    1997/09/18 20:20:06 275 44 343 --- --- --- 2.8e+14*2 1.7e+29*2 267 C2 C3 195 SXT PHTX DST Java Movie Very Poor Event; Only 2 points; Only C2
    1997/09/19 01:29:06 281 28 240 173 0 -9.2*1 2.0e+13 5.9e+27 280 C2 C3 195 SXT PHTX DST Java Movie UVCS Revised on 2006/01/09
    1997/09/19 02:30:05 265 46 272 134 0 -26.2 1.2e+14 4.6e+28 272 C2 C3 195 SXT PHTX DST Java Movie Revised on 2006/01/09
    1997/09/19 04:20:05 265 77 251 366 510 9.7 1.9e+15 5.9e+29 257 C2 C3 195 SXT PHTX DST Java Movie Revised on 2006/01/09
    1997/09/19 18:03:05 95 43 282 224 0 -5.5 4.5e+14 1.8e+29 91 C2 C3 195 SXT PHTX DST Java Movie
    1997/09/20 00:44:22 246 39 522 508 515 -1.0 7.6e+14 1.0e+30 247 C2 C3 195 SXT PHTX DST Java Movie
    1997/09/20 03:38:05 241 15 472 209 0 -33.7*1 ---- ---- 242 C2 C3 195 SXT PHTX DST Java Movie Newly inserted on 2006/01/09
    1997/09/20 10:20:05 272 97 777 827 803 5.0 4.9e+15 1.5e+31 268 C2 C3 195 SXT PHTX DST Java Movie
    1997/09/20 16:53:06 82 54 ---- --- --- --- 3.0e+13*2 1.5e+23*2 76 C2 C3 195 SXT PHTX DST Java Movie Newly inserted on 2006/01/09; Poor Event; Only 1 point; Only C2
    1997/09/20 22:02:08 288 25 306 257 226 -3.3*1 6.3e+14 2.9e+29 290 C2 C3 195 SXT PHTX DST Java Movie Poor Event
    1997/09/22 07:29:05 255 46 353 469 737 21.4*1 1.9e+14 1.2e+29 251 C2 C3 195 SXT PHTX DST Java Movie Poor Event
    1997/09/22 09:26:50 72 84 287 372 874 31.6*1 3.1e+14*2 1.3e+29*2 65 C2 C3 195 SXT PHTX DST Java Movie Poor Event; Only C2
    1997/09/22 12:00:05 90 69 277 269 260 -0.6 2.0e+15 7.5e+29 91 C2 C3 195 SXT PHTX DST Java Movie
    1997/09/23 22:02:10 133 155 712 803 761 8.2 3.9e+15*2 9.9e+30*2 116 C2 C3 195 SXT PHTX DST Java Movie Partial Halo
    1997/09/24 03:38:05 137 76 532 676 899 30.3*1 7.8e+12 1.1e+28 117 C2 C3 195 SXT PHTX DST Java Movie
    1997/09/24 04:20:05 275 41 202 170 0 -7.9*1 1.3e+14 2.7e+28 271 C2 C3 195 SXT PHTX DST Java Movie Only C2
    1997/09/24 08:06:05 161 53 161 299 454 8.8 9.8e+13 1.3e+28 160 C2 C3 195 SXT PHTX DST Java Movie
    1997/09/24 12:26:06 94 52 352 351 350 -0.1*1 3.2e+14 2.0e+29 103 C2 C3 195 SXT PHTX DST Java Movie Newly inserted on 2005/12/21
    1997/09/24 18:53:05 249 22 233 251 289 1.7*1 9.7e+11 2.6e+26 257 C2 C3 195 SXT PHTX DST Java Movie Poor Event
    1997/09/25 00:05:05 311 39 153 160 169 0.4*1 6.2e+12 7.3e+26 303 C2 C3 195 SXT PHTX DST Java Movie Poor Event
    1997/09/27 04:44:04 60 14 277 334 678 17.0*1 ---- ---- 63 C2 C3 195 SXT PHTX DST Java Movie
    1997/09/27 09:09:47 62 23 436 487 577 7.8 5.0e+14 4.7e+29 67 C2 C3 195 SXT PHTX DST Java Movie
    1997/09/27 13:16:13 276 45 80 102 187 1.4*1 5.6e+14 1.8e+28 275 C2 C3 195 SXT PHTX DST Java Movie Poor Event
    1997/09/28 01:08:33 Halo (S) 360 359 404 409 2.8 4.0e+15*2 2.6e+30*2 87 C2 C3 195 SXT PHTX DST Java Movie
    1997/09/28 08:40:43 84 60 529 624 573 5.5 5.6e+15 7.8e+30 74 C2 C3 195 SXT PHTX DST Java Movie
    1997/09/28 12:05:54 23 9 505 485 0 -16.4*1 ---- ---- 26 C2 C3 195 SXT PHTX DST Java Movie Very Poor Event; Only 3 points; Only C2
    1997/09/28 14:28:15 93 85 579 397 0 -25.8 3.1e+15 5.1e+30 71 C2 C3 195 SXT PHTX DST Java Movie
    1997/09/28 14:50:11 287 46 102 169 726 22.2*1 5.3e+14 2.8e+28 284 C2 C3 195 SXT PHTX DST Java Movie Poor Event; Only C2
    1997/09/28 15:50:20 257 41 640 793 747 13.1 1.3e+15 2.7e+30 266 C2 C3 195 SXT PHTX DST Java Movie UVCS
    1997/09/29 10:18:04 77 44 237 272 706 19.1*1 2.1e+14*2 6.0e+28*2 74 C2 C3 195 SXT PHTX DST Java Movie Only C2
    1997/09/29 15:46:37 75 55 699 805 791 11.6 3.3e+15 8.0e+30 74 C2 C3 195 SXT PHTX DST Java Movie
    1997/09/29 18:30:56 78 99 369 391 421 2.5 3.4e+15 2.3e+30 63 C2 C3 195 SXT PHTX DST Java Movie
    1997/09/30 00:53:05 76 137 399 243 406 -17.1*1 1.1e+15*2 8.8e+29*2 63 C2 C3 195 SXT PHTX DST Java Movie Only C3; Partial Halo
    1997/09/30 02:55:05 252 48 174 278 712 21.7*1 1.4e+14*2 2.1e+28*2 246 C2 C3 195 SXT PHTX DST Java Movie Poor Event; Only C2
    1997/09/30 23:14:40 260 29 337 469 558 12.0*1 8.4e+14 4.8e+29 252 C2 C3 195 SXT PHTX DST Java Movie Very Poor Event

    *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).