1 September 1980 --- Day of Year (DOY): 245

This coronal mass ejection is composed of a highly structed outer loop or arcade of loops and a complex `mushroom shaped' core. 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 Description

Multiple, concentric loops/cavities with highly complex,multi-featured (prominence?) core superposed on streamer. Loop front is flattened. Streamer is blown out. Big deflections.

Event Properties

Start/Stop Times in SMM Coronagraph Field of View: September 01 6:11~7:46
Central Position Angle: ~297 degrees
Width (in degrees): ~055
Speed (in km/sec): 810 <--- Outer Loop
Speed (in km/sec): 642 <--- Outer Cavity
Speed (in km/sec): 626 <--- Mushroom Shaped (Prom?) Core

Image List:

September 01, 1980: 06:18 UT September 01, 1980: 06:20 UT

September 01, 1980: 06:21 UT September 01, 1980: 06:24 UT

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