Compiled by C. St.Cyr (cst@sdac.nascom.nasa.gov) -- Version 1999/02/05 First C2 Central Angular Primary H-T Concave Appearance PA Width Speed Fit Accel Speed Out Date Time [UT] [deg] [deg] [km/s] [m/s^2] Feature Feature?Comments 1997/04/01 06:22 ~79 ~57 374 1 --- LE (Front) No Extremely faint cloud; other material follows 1997/04/01 15:18 64 67 296 1 --- LE (Front) No Faint loop(?) or mound 1997/04/02 07:17 72 83 338 1 --- LE (Front) No Faint material, followed by somewhat brighter material 1997/04/03 No new CMEs this day 1997/04/04 05:09 277 64 326 2 4.6 LE (Loop) Yes Loops w/core & trailing structure/ray 1997/04/04 18:57 93 35 --- --- --- --- No Material, no front 1997/04/05 No new CMEs this day 1997/04/06 No new CMEs this day 1997/04/07 06:26 Halo 360 168 1 --- LE (Loop) No Faint mound in NW becomes halo with component in SE; some internal structure in NW 1997/04/07 14:27 Halo 360 830 1 --- LE (Halo) Yes Brightest in SE; much structure 1997/04/08 No new CMEs this day 1997/04/09 12:06 256 27 499 1 --- LE (Materi No Wave of bright material; EIT/CDS AR EPL 1997/04/10 No new CMEs this day 1997/04/11 ~02:06 98 23 168 1 --- (U-vertex) Yes Bubble superposed on streamer 1997/04/11 Data Gap after 13:19 1997/04/12 Data Gap 1997/04/13 Data Gap before 16:12 1997/04/13 16:12 IP 260 42 403 1 --- LE (Loop) Yes Bubble of concentric loops; (Jim Chen ApJ Ltr) 1997/04/13 23:54 258 24 478 1 --- (Late Blob Yes Narrow loop system; later blobs and wave 1997/04/14 17:14 255 22 431 1 --- LE (Wave) Maybe Two non-radial waves of bright material 1997/04/14 ~19:55 ~98 ~25 --- --- --- --- Maybe Streamer slowly detaches? 1997/04/15 No new CMEs this day 1997/04/16 01:34 257 20 318 1 --- LE (Materi No Fan(?) of material; falls apart 1997/04/16 ~07:35 118 145 247 2 3.6 LE (Loop) Yes Intersecting loops? from rising; S Pole sweep; 1997/04/17 No new CMEs this day 1997/04/18 No new CMEs this day 1997/04/19 No new CMEs this day 1997/04/20 19:45 272 27 --- --- --- --- No Non-radial motion of "wave"; falls apart 1997/04/21 No new CMEs this day 1997/04/22 22:57 76 42 663 1 --- LE (Loop) Yes Structured loop w/slanted trailing; bright ray after 1997/04/23 No new CMEs this day 1997/04/24 No new CMEs this day 1997/04/25 No new CMEs this day 1997/04/26 No new CMEs this day 1997/04/27 00:31 209 233 359 1 --- LE (Loop) No Faint in South; structured, filled front in W/SW 1997/04/27 10:26 Halo 360 288 1 --- LE (Halo) No #2 Faint above N and S poles; filled fronts 1997/04/27 14:59 Halo 360 225 1 --- LE (Halo) No #3 Faint above N and S poles; filled fronts 1997/04/28 No new CMEs this day 1997/04/29 No new CMEs this day 1997/04/30 04:50 83 70 304 1 --- LE (Loop) Yes Concentric loops w/trailing V's and slanted features