Event 1998/05/11

    CME (C2/C3):
                First appearance in C2:                  21:55 UT
                Average velocity in C2/C3:           830 km/s
                Average acceleration in C2/C3:     -4.7 m/s/s
                Position Angle in C2:                    208 degree
                Angular width in C2:                      >301 degree
     CME (C1):
                First appearance in C1:                  21:39 UT
                 Magnitude:                                        N/A
                 Onset Time:                                      N/A
                 Peak Time:                                        N/A
                 End Time:                                         N/A
                 CME final speed:                              828.6 km/s
                 Flare rise time:                                   N/A min
                 CME acceleration in rise phase:        N/A m/s/s
        Source Region:
                 Backside of the Sun at PA 270
                  An impulsive event
                  EIT: 21:51 UT, big Eruption from backside of the Sun at PA 270
                 SXT: no signature, indicating a backside CME

CME Height-Time measurement data (02/01/04)

CME measurement timing versus flare

CME Height-Time, flare plot

CME Velocity-Time, flare plot

Sample Images