Compiled by C. St.Cyr (cst@sdac.nascom.nasa.gov) -- Version 1998/09/28 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 1997/12/01 Data Gap until 15:57 1997/12/01 15:57 IP C 86 40 115 1 --- (U-vertex) Yes Front(?) at 20R in progress; late small-U and other bright material 1997/12/02 ~16:43 80 48 204 1 --- (Loop) Yes Spike and diffuse material precede structured loop/arcade 1997/12/03 No new CMEs this day 1997/12/04 No new CMEs this day 1997/12/05 ~08:27 268 103 543 2 4.0 LE (Loop) Yes Complex of intersecting loops/arcades 1997/12/06 ~10:27 340 250 665 2 10.8 LE (Loop) Maybe Much structure; overlapping loops? 1997/12/07 No new CMEs this day 1997/12/08 No new CMEs this day 1997/12/09 12:27 262 86 313 1 --- (Blob) Maybe Material surrounds streamer in SW; late linear blob in NW 1997/12/10 ~18:38 288 67 44 1 --- (Loop) Yes Expanding streamer erupts w/much structure; 1997/12/11 07:27 83 30 --- --- --- --- No Faint cloud(?) 1997/12/11 19:57 25 53 --- --- --- --- Yes Bizarre event; fan appears in NE and sweeps through N pole 1997/12/12 01:27 285 20 345 2 6.6 LE (Prom) Yes Extremely non-radial motion of new prom loop across existing CME; UVCS event? 1997/12/12 07:27 260 52 173 1 --- LE (Loop) Yes Swelling streamer erupts w/structured loop 1997/12/13 00:26 277 64 207 1 --- LE (Loop) Yes Bright thin loop before data gap 1997/12/13 Data Gap 01:38-05:17 1997/12/14 Data Gap 02:11-06:23 1997/12/14 02:03 91 62 575 1 --- LE (Loop) Yes Bright loop missed in C2; deforms/dimples in C3 1997/12/14 02:03 297 46 --- --- --- --- Maybe Poorly placed because of data gap; structured material? 1997/12/15 ~11:27 110 50 --- --- --- --- No Expanding streamer lets loose at one leg?; very non-radial 1997/12/15 ~17:27 ~280 ~23 --- --- --- --- No Material; could be faint front earlier; ugly 1997/12/16 No new CMEs this day 1997/12/17 21:32 219 37 166 1 --- LE (Loop) No Very faint loop w/core (or inner loop) 1997/12/18 23:35 Halo 360 385 1 --- LE (Loop) Yes Bright halo; faint in South; 1997/12/19 No new CMEs this day; Data Gap after 16:12 1997/12/20 No new CMEs this day; Data Gap before 21:00 1997/12/20 <21:00 355 170 300 1 --- LE (Loop) No Early LASCO data gap; faint; some structure trails 1997/12/21 ~14:48 ~75 ~18 --- --- --- --- Yes Faint concave-out shape (part of halo??) 1997/12/21 ~20:10 ~282 ~63 --- --- --- --- No Faint cloud(?)' structure? 1997/12/22 No new CMEs this day 1997/12/23 Data Gap 00:01-04:30 1997/12/23 ~15:18 ~205 ~310 412 1 --- LE (Loop) Yes Very faint; mostly SW; separate in E? 1997/12/24 No new CMEs this day 1997/12/25 No new CMEs this day 1997/12/26 02:31 175 250 347 2 4.7 LE (Loop) Yes Multiple intersecting loops; first in SE 1997/12/27 all day 79 33 72 1 --- (Arc) Yes Arc(?) embedded in cloud 1997/12/27 all day 276 57 117 1 --- (Core) Yes Rising loops? Difficult to tell what is happening early 1997/12/27 Data Gap 17:50-21:05 1997/12/28 19:54 111 13 499 1 --- (Wave) Yes Wave of material moves non-radially 1997/12/29 12:04 277 49 --- --- --- --- Maybe Material w/o front; later fast wave appears 1997/12/30 05:10 251 70 609 1 --- LE (Loop) Yes Fuzzy faint structured loop(s) 1997/12/30 07:08 85 66 533 1 --- LE (Arc) Yes Fast faint loop; later structured loops/arcade 1997/12/31 No new CMEs this day