• 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
    1997/07/01 17:30:05 255 23 544 344 0 -29.1 ---- ---- 261 C2 C3 195 SXT PHTX DST Java Movie
    1997/07/04 03:22:38 281 36 154 169 288 2.6*1 2.1e+14 2.5e+28 279 C2 C3 195 SXT PHTX DST Java Movie Poor Event; Only C2
    1997/07/05 10:13:48 294 22 426 422 414 -0.6*1 8.0e+13 7.2e+28 282 C2 C3 195 SXT PHTX DST Java Movie
    1997/07/05 16:35:08 285 19 134 85 0 -5.1*1 ---- ---- 280 C2 C3 195 SXT PHTX DST Java Movie Poor Event
    1997/07/05 22:23:49 265 41 302 280 274 -1.3 ---- ---- 268 C2 C3 195 SXT PHTX DST Java Movie
    1997/07/06 04:30:15 102 39 154 167 215 1.2*1 1.5e+14 1.8e+28 96 C2 C3 195 SXT PHTX DST Java Movie
    1997/07/06 13:30:06 286 51 153 138 94 -0.8*1 1.3e+15 1.5e+29 285 C2 C3 195 SXT PHTX DST Java Movie
    1997/07/08 16:09:36 279 54 159 140 0 -1.4*1 3.5e+14 4.4e+28 269 C2 C3 195 SXT PHTX DST Java Movie Poor Event
    1997/07/10 17:26:03 256 30 91 76 0 -1.8*1 ---- ---- 263 C2 C3 195 SXT PHTX DST Java Movie Poor Event
    1997/07/10 17:26:03 91 52 209 328 898 33.8*1 ---- ---- 89 C2 C3 195 SXT PHTX DST Java Movie Newly inserted on 2006/01/06; Poor Event; Only 3 points; Only C2
    1997/07/11 01:30:06 77 72 216 234 279 1.7*1 1.2e+14 2.8e+28 74 C2 C3 195 SXT PHTX DST Java Movie Poor Event
    1997/07/11 08:28:06 96 37 388 436 516 6.6*1 ---- ---- 97 C2 C3 195 SXT PHTX DST Java Movie
    1997/07/12 10:21:28 276 47 180 112 0 -11.8*1 ---- ---- 272 C2 C3 195 SXT PHTX DST Java Movie Very Poor Event; Only C3
    1997/07/13 01:02:54 276 33 347 326 113 -5.2*1 ---- ---- 272 C2 C3 195 SXT PHTX DST Java Movie
    1997/07/14 03:17:20 282 10 220 --- --- --- ---- ---- 276 C2 C3 195 SXT PHTX DST Java Movie Poor Event; Only 2 points; Only C2
    1997/07/14 08:51:20 77 82 258 238 237 -0.8 3.1e+15 1.0e+30 74 C2 C3 195 SXT PHTX DST Java Movie
    1997/07/15 03:34:11 84 42 258 138 0 -13.3*1 3.8e+13 1.3e+28 87 C2 C3 195 SXT PHTX DST Java Movie
    1997/07/16 13:30:05 273 47 201 264 482 9.6*1 2.1e+14*2 4.2e+28*2 280 C2 C3 195 SXT PHTX DST Java Movie Poor Event; Only 3 points
    1997/07/16 16:31:44 69 105 100 98 59 -0.3*1 4.5e+14 2.2e+28 75 C2 C3 195 SXT PHTX DST Java Movie Only C2
    1997/07/17 03:30:05 272 18 71 105 287 3.8*1 ---- ---- 274 C2 C3 195 SXT PHTX DST Java Movie Poor Event
    1997/07/19 22:41:53 284 66 175 152 0 -13.7*1 2.0e+14*2 3.1e+28*2 279 C2 C3 SXT PHTX DST Java Movie Poor Event; Only 3 points; Only C2
    1997/07/20 23:41:55 264 17 107 148 216 2.2 ---- ---- 265 C2 C3 SXT PHTX DST Java Movie Only C3
    1997/07/22 07:12:26 264 64 496 892 779 25.9 1.2e+15 1.5e+30 266 C2 C3 SXT PHTX DST Java Movie
    1997/07/23 12:20:42 296 28 281 305 359 2.8*1 9.6e+13 3.8e+28 298 C2 C3 SXT PHTX DST Java Movie
    1997/07/24 04:30:06 291 56 290 290 290 -0.0*1 2.4e+15*2 1.0e+30*2 281 C2 C3 SXT PHTX DST Java Movie
    1997/07/24 12:30:05 90 65 144 110 0 -4.6*1 6.2e+14*2 6.4e+28*2 86 C2 C3 SXT PHTX DST Java Movie
    1997/07/24 14:00:06 270 36 187 159 0 -10.7*1 ---- ---- 267 C2 C3 SXT PHTX DST Java Movie Only C2
    1997/07/25 07:31:20 273 45 404 627 746 23.2 2.1e+15 1.7e+30 277 C2 C3 195 SXT PHTX DST Java Movie
    1997/07/25 21:01:15 267 84 611 538 585 -5.6 5.4e+15 1.0e+31 290 C2 C3 195 SXT PHTX DST Java Movie UVCS
    1997/07/30 04:45:47 Halo (S) 360 104 119 162 0.8 8.2e+14*2 4.5e+28*2 269 C2 C3 195 SXT PHTX DST Java Movie
    1997/07/30 19:32:05 95 65 530 584 576 4.9 1.4e+15 2.0e+30 98 C2 C3 195 SXT 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).