SMM C/P CME Event

14 July 1984 --- Day of Year (DOY): 196

This thin loop/cavity, seen over the northwest limb of the sun, was recorded by the SMM Coronagraph on July 14, 1984. 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

Could be two events:

1. Loop/cavity and partially structured core superposed on streamer. Deflections. Streamer is blown out.
2. Cloud superposed on fan. Ray brightens from 19:03 until 20:37 then fades.

Event Properties

Start/Stop Times in SMM Coronagraph Field of View: July 14 7:55~23:46
Central Position Angle: ~309 degrees
Width (in degrees): ~053
Speed (in km/sec): 307 <--- Outer Cavity from Part I.

Image List:

July 14, 1984: 6:59 UT July 14, 1984: 7:04 UT July 14, 1984: 7:55 UT

July 14, 1984: 8:00 UT July 14, 1984: 8:34 UT July 14, 1984: 8:39 UT

The `streak' seen in the SMM image at 08:34 was caused by space debris moving through the Coronagraph field of view.

July 14, 1984: 9:30 UT July 14, 1984: 10:08 UT July 14, 1984: 10:13 UT

July 14, 1984: 11:04 UT July 14, 1984: 11:09 UT July 14, 1984: 11:42 UT

July 14, 1984: 11:47 UT July 14, 1984: 14:23 UT July 14, 1984: 14:47 UT

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