12 October 1988 --- Day of Year (DOY): 286

Event Description

Flattened loop/cavity with highly structured, inner (prominence) loop/cavity superposed on streamer. Event has concave-outward shape between loop top and inner (prominence) loop. Streamer is disrupted. Solar north is toward the upper left as indicated by the arrow drawn into the occulting disk; the dotted circle marks the solar photosphere.

Event Properties

Start/Stop Times in SMM Coronagraph Field of View: October 12 22:25 to 22:58
Central Position Angle: 122 degrees
Width (in degrees): 055 degrees
Speed (in km/sec): 263 <--- Inner Loop (Prominence)

Image List:

October 12, 1988: 19:34 UT October 12, 1988: 22:25 UT

October 12, 1988: 22:58 UT October 12, 1988: 23:59 UT

Detailed information on all SMM mass ejections is available in the SMM Catalogue of Coronal Mass Ejections