SMM C/P CME Event
23 April 1989 --- Day of Year (DOY): 113
4 images of a prominence eruption seen over the southeast limb of the sun on April 23, 1989. Solar north points toward the upper left corner in each image.
Event Description
Thick loop/cavity with highly structured, `question-mark' shaped (prominence) core. Event is superposed on streamer. Region is partially blown out. Deflections. Data is streaked.
Event Properties
Start/Stop Times in SMM Coronagraph Field of View:
April 23 08:51 to 12:48
Central Position Angle: 143 degrees
Width (in degrees): 044
Speed (in km/sec): 477 <--- Back Edge of Question Mark (prominence)
Image List:
April 23, 1989: 08:51 UT
April 23, 1989: 09:42 UT
April 23, 1989: 09:51 UT
April 23, 1989: 09:59 UT
April 23, 1989: 10:07 UT
April 23, 1989: 10:16 UT
April 23, 1989: 11:32 UT
April 23, 1989: 4 images in one frame
Detailed information on all SMM mass ejections is available in the SMM Catalogue of Coronal Mass Ejections