• 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
    1998/03/01 10:03:23 75 35 412 508 781 23.6*1 1.4e+14*2 1.2e+29*2 74 C2 C3 195 SXT PHTX DST Java Movie Poor Event
    1998/03/01 10:03:23 278 45 421 564 509 7.5 4.2e+15 3.7e+30 278 C2 C3 195 SXT PHTX DST Java Movie
    1998/03/01 20:13:21 268 71 242 319 744 22.8*1 6.3e+14*2 1.8e+29*2 276 C2 C3 195 SXT PHTX DST Java Movie Only 3 points; Only C2
    1998/03/02 09:41:07 62 8 385 --- --- --- ---- ---- 66 C2 C3 195 SXT PHTX DST Java Movie Very Poor Event; Only 2 points; Only C2
    1998/03/02 17:29:27 234 17 360 284 0 -12.8*1 ---- ---- 243 C2 C3 195 SXT PHTX DST Java Movie
    1998/03/02 20:55:08 303 2 ---- --- --- --- ---- ---- 298 C2 C3 195 SXT PHTX DST Java Movie Poor Event; Only 1 point; Only C2
    1998/03/03 14:30:49 25 95 159 108 0 -15.6*1 6.2e+13*2 7.8e+27*2 33 C2 C3 195 SXT PHTX DST Java Movie Very Poor Event; Only C2
    1998/03/06 01:18:45 53 26 325 365 327 3.0*1 2.0e+14*2 1.1e+29*2 66 C2 C3 195 SXT PHTX DST Java Movie Only C3
    1998/03/06 01:18:45 256 51 264 342 320 3.9*1 2.4e+15 8.3e+29 256 C2 C3 195 SXT PHTX DST Java Movie Only C3
    1998/03/06 07:11:15 269 79 659 734 695 5.8 4.2e+15 9.1e+30 281 C2 C3 195 SXT PHTX DST Java Movie
    1998/03/07 02:12:28 299 15 169 236 399 6.1*1 ---- ---- 289 C2 C3 195 SXT PHTX DST Java Movie Very Poor Event
    1998/03/07 03:46:41 267 81 361 422 398 3.0 2.0e+15 1.3e+30 261 C2 C3 195 SXT PHTX DST Java Movie UVCS
    1998/03/07 07:12:29 103 29 323 412 403 4.6*1 1.1e+15 5.5e+29 101 C2 C3 195 SXT PHTX DST Java Movie
    1998/03/07 23:19:02 106 20 356 328 266 -3.3 1.5e+14 9.3e+28 106 C2 C3 195 SXT PHTX DST Java Movie
    1998/03/08 02:39:19 319 31 359 225 0 -19.2*1 6.8e+13*2 4.4e+28*2 318 C2 C3 195 SXT PHTX DST Java Movie Poor Event; Only 3 points
    1998/03/08 18:55:06 98 93 379 360 116 -6.1*1 5.2e+14*2 3.7e+29*2 91 C2 C3 195 SXT PHTX DST Java Movie
    1998/03/08 21:55:06 59 27 760 578 528 -26.6 4.4e+14 1.3e+30 69 C2 C3 195 SXT PHTX DST Java Movie
    1998/03/09 17:07:19 83 86 217 250 535 10.3*1 1.5e+14 3.5e+28 97 C2 C3 195 SXT PHTX DST Java Movie Only C2
    1998/03/10 05:34:25 74 77 313 384 427 5.6 1.8e+15 9.0e+29 85 C2 C3 195 SXT PHTX DST Java Movie
    1998/03/10 12:55:24 293 23 437 383 414 -2.7 4.6e+14 4.4e+29 287 C2 C3 195 SXT PHTX DST Java Movie
    1998/03/11 03:59:30 291 23 455 477 476 1.7 5.2e+13 5.4e+28 288 C2 C3 195 SXT PHTX DST Java Movie
    1998/03/12 01:31:01 82 14 213 326 980 39.3*1 ---- ---- 84 C2 C3 195 SXT PHTX DST Java Movie Only C2
    1998/03/12 07:32:58 54 19 445 472 530 4.7*1 ---- ---- 61 C2 C3 195 SXT PHTX DST Java Movie Poor Event
    1998/03/13 01:31:03 259 71 298 338 547 10.0 2.3e+14 1.0e+29 258 C2 C3 195 SXT PHTX DST Java Movie
    1998/03/13 12:33:35 264 64 266 237 0 -4.2*1 3.5e+14 1.2e+29 265 C2 C3 195 SXT PHTX DST Java Movie Poor Event
    1998/03/13 21:30:53 266 90 409 354 319 -4.5 2.3e+15 1.9e+30 258 C2 C3 195 SXT PHTX DST Java Movie
    1998/03/14 10:32:38 106 83 86 105 244 2.3*1 2.4e+14 8.8e+27 100 C2 C3 195 PHTX DST Java Movie Poor Event; Only C2
    1998/03/15 01:31:02 79 35 469 323 214 -20.5*1 3.9e+14*2 4.2e+29*2 82 C2 C3 195 SXT PHTX DST Java Movie Only C3
    1998/03/15 14:11:37 47 10 366 375 506 5.5*1 ---- ---- 53 C2 C3 195 SXT PHTX DST Java Movie Poor Event; Only 3 points; Only C2
    1998/03/15 16:06:05 302 32 330 324 310 -0.7*1 1.5e+14 8.3e+28 304 C2 C3 195 SXT PHTX DST Java Movie
    1998/03/15 19:31:00 112 114 142 185 396 6.3*1 3.6e+14 3.6e+28 128 C2 C3 195 SXT PHTX DST Java Movie Poor Event; Only C2
    1998/03/16 01:31:04 122 146 425 268 166 -13.5 2.4e+15*2 2.2e+30*2 127 C2 C3 195 SXT PHTX DST Java Movie Partial Halo
    1998/03/16 03:30:05 265 52 179 217 236 1.5*1 1.4e+15 2.2e+29 268 C2 C3 195 SXT PHTX DST Java Movie
    1998/03/16 09:36:14 147 49 332 316 304 -1.2 ---- ---- 131 C2 C3 195 SXT PHTX DST Java Movie Newly inserted on 2006/11/06
    1998/03/16 20:33:08 83 6 215 214 210 -0.1*1 ---- ---- 86 C2 C3 195 SXT PHTX DST Java Movie Only 3 points; Only C2
    1998/03/17 02:07:37 47 11 404 394 368 -1.6*1 ---- ---- 54 C2 C3 195 SXT PHTX DST Java Movie
    1998/03/17 13:34:57 271 35 208 228 409 5.6 ---- ---- 271 C2 C3 195 SXT PHTX DST Java Movie Only C2
    1998/03/17 14:10:45 256 69 285 395 469 7.9 ---- ---- 264 C2 C3 195 SXT PHTX DST Java Movie
    1998/03/17 15:06:15 146 6 204 313 1228 62.4*1 ---- ---- 143 C2 C3 195 SXT PHTX DST Java Movie Very Poor Event; Only 3 points; Only C2
    1998/03/17 22:28:06 270 12 339 330 327 -0.7*1 ---- ---- 277 C2 C3 195 SXT PHTX DST Java Movie
    1998/03/18 07:33:06 118 174 636 979 810 23.5 5.9e+15*2 1.2e+31*2 98 C2 C3 195 SXT PHTX DST Java Movie UVCS Partial Halo
    1998/03/18 11:35:31 272 72 261 302 423 5.3*1 ---- ---- 261 C2 C3 195 SXT PHTX DST Java Movie
    1998/03/19 03:06:05 77 33 259 255 230 -0.7*1 1.7e+13 5.7e+27 78 C2 C3 195 SXT PHTX DST Java Movie Very Poor Event
    1998/03/19 10:14:49 72 24 228 334 835 28.4*1 ---- ---- 78 C2 C3 195 SXT PHTX DST Java Movie Poor Event; Only C2
    1998/03/19 16:08:22 74 31 221 203 156 -1.3 ---- ---- 79 C2 C3 195 SXT PHTX DST Java Movie
    1998/03/19 23:30:05 63 54 300 350 472 6.7*1 2.3e+14 1.0e+29 82 C2 C3 195 SXT PHTX DST Java Movie
    1998/03/21 00:34:44 344 55 132 144 402 6.2*1 4.0e+13*2 3.5e+27*2 331 C2 C3 SXT PHTX DST Java Movie Very Poor Event; Only C2
    1998/03/21 06:11:22 238 33 239 264 395 5.5*1 1.2e+14 3.5e+28 251 C2 C3 SXT PHTX DST Java Movie UVCS Very Poor Event
    1998/03/21 15:39:37 311 56 95 102 134 0.4*1 ---- ---- 311 C2 C3 SXT PHTX DST Java Movie Not LE
    1998/03/21 17:39:53 88 21 309 346 651 14.6*1 2.9e+13*2 1.4e+28*2 89 C2 C3 SXT PHTX DST Java Movie Poor Event; Only C2
    1998/03/22 07:41:51 104 49 418 406 335 -3.0 5.0e+14 4.4e+29 90 C2 C3 SXT PHTX DST Java Movie
    1998/03/22 18:52:46 110 10 350 406 580 10.5*1 ---- ---- 105 C2 C3 SXT PHTX DST Java Movie
    1998/03/23 00:50:45 94 84 357 306 307 -2.8 2.6e+15 1.7e+30 75 C2 C3 195 SXT PHTX DST Java Movie
    1998/03/23 03:09:22 251 61 269 329 474 7.6*1 3.6e+14 1.3e+29 250 C2 C3 195 SXT PHTX DST Java Movie Poor Event
    1998/03/23 09:33:36 271 111 403 636 529 10.5 8.5e+15 6.9e+30 246 C2 C3 195 SXT PHTX DST Java Movie
    1998/03/23 16:06:06 98 47 431 424 423 -0.5 1.6e+15 1.5e+30 101 C2 C3 195 SXT PHTX DST Java Movie
    1998/03/23 20:48:27 87 80 142 149 155 0.2 2.4e+14 2.4e+28 81 C2 C3 195 SXT PHTX DST Java Movie
    1998/03/24 11:40:16 246 67 289 212 0 -7.3 1.8e+15 7.5e+29 236 C2 C3 195 SXT PHTX DST Java Movie
    1998/03/25 02:07:04 100 24 173 202 533 11.1*1 ---- ---- 94 C2 C3 195 SXT PHTX DST Java Movie Only C2
    1998/03/25 05:36:54 90 81 252 216 0 -4.8 5.7e+14 1.8e+29 98 C2 C3 195 SXT PHTX DST Java Movie
    1998/03/25 13:14:11 242 104 761 787 771 2.2 7.5e+15 2.2e+31 220 C2 C3 195 SXT PHTX DST Java Movie UVCS
    1998/03/26 00:40:19 93 72 308 351 357 2.7 1.2e+15 5.9e+29 75 C2 C3 195 SXT PHTX DST Java Movie
    1998/03/27 01:23:10 88 87 569 597 585 2.1 4.6e+15 7.5e+30 67 C2 C3 195 SXT PHTX DST Java Movie
    1998/03/27 10:23:10 110 34 429 402 0 -15.7*1 4.1e+13*2 3.7e+28*2 106 C2 C3 195 SXT PHTX DST Java Movie Poor Event; Only 3 points; Only C2
    1998/03/27 20:07:43 209 97 519 593 558 4.5 6.7e+15 9.0e+30 206 C2 C3 195 SXT PHTX DST Java Movie
    1998/03/28 12:03:05 70 9 203 250 329 3.6*1 ---- ---- 73 C2 C3 195 SXT PHTX DST Java Movie
    1998/03/28 14:09:06 278 49 352 424 427 4.3*1 1.5e+15 9.0e+29 279 C2 C3 195 SXT PHTX DST Java Movie
    1998/03/28 22:41:46 326 167 223 161 0 -11.1*1 7.7e+13*2 1.9e+28*2 328 C2 C3 195 SXT PHTX DST Java Movie Poor Event; Only C2; Partial Halo
    1998/03/29 03:48:28 Halo (OA) 360 1397 1378 1389 -4.9*1 1.7e+16*2 1.6e+32*2 189 C2 C3 195 SXT PHTX DST Java Movie UVCS Only 3 points; Only C3
    1998/03/30 13:28:30 90 42 314 341 366 2.2*1 6.0e+14 3.0e+29 93 C2 C3 195 SXT PHTX DST Java Movie
    1998/03/30 18:47:53 164 100 668 622 471 -13.0*1 1.3e+15*2 2.9e+30*2 171 C2 C3 195 SXT PHTX DST Java Movie
    1998/03/30 21:09:28 220 30 286 --- --- --- ---- ---- 222 C2 C3 195 SXT PHTX DST Java Movie Poor Event; Only 2 points; Only C2
    1998/03/31 03:28:17 278 43 296 187 0 -60.1*1 ---- ---- 270 C2 C3 195 SXT PHTX DST Java Movie Only 3 points; Only C2
    1998/03/31 03:56:12 62 13 125 --- --- --- ---- ---- 64 C2 C3 195 SXT PHTX DST Java Movie UVCS Only 2 points; Only C2
    1998/03/31 06:12:02 Halo (OA) 360 1992 --- --- --- 1.6e+16*2 3.1e+32*2 177 C2 C3 195 SXT PHTX DST Java Movie Only 2 points; Only C3
    1998/03/31 11:04:07 281 48 850 960 910 14.6 2.0e+15 7.3e+30 287 C2 C3 195 SXT PHTX DST Java Movie
    1998/03/31 13:16:42 97 19 597 590 586 -1.1 ---- ---- 83 C2 C3 195 SXT PHTX DST Java Movie
    1998/03/31 15:54:48 158 71 1047 1113 1067 7.9 4.2e+14 2.3e+30 157 C2 C3 195 SXT PHTX DST Java Movie UVCS
    1998/03/31 22:30:43 46 84 415 443 425 1.3 ---- ---- 42 C2 C3 195 SXT PHTX DST Java Movie UVCS

    *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).