Center for Solar Physics and Space Weather, The Catholic University of America

CME heights are measured at the fastest segment of the leading edge
PA= Postion Angle measured from Solar North in degrees
Click on date to view movie
Click on speed to view height-time plot

First C2 Appearance
Date Time [UT] Central
PA [deg] Angular
Width [deg] Linear fit
Speed [km/s] 2nd order fit
Speed [km/s] Accel
[m/s^2] Measurement
PA [deg] Remark

1998/04/29 16:58:54 Halo 360 1074 935 1031 -17.7 56

1998/05/01 23:56:59 Halo 360 373 412 416 3.2 217 Only C3

1998/05/02 05:31:56 Halo 360 428 287 157 -12.3 214

1998/05/02 14:06:12 Halo 360 979 954 937 -5.6 315

1998/05/03 22:02:55 Halo 360 669 659 662 -0.9 304

1998/11/05 20:58:59 Halo 360 1124 1341 1213 32.5 299 Only 3 points, Only C3

1999/07/28 02:06:07 101 117 506 408 0 -15.5 57

1999/07/28 09:06:05 Halo 360 464 424 424 -3.1 324

1999/09/20 06:06:05 Halo 360 604 549 357 -14.5 14 Faint. Difficult to measure.

First C2 Appearance Date Time [UT]		Central PA [deg]	Angular Width [deg]	Linear fit Speed [km/s]	2nd order fit Speed [km/s]		Accel [m/s^2]	Measurement PA [deg]	Remark
1998/04/29	16:58:54	Halo	360	1074	935	1031	-17.7	56
1998/05/01	23:56:59	Halo	360	373	412	416	3.2	217	Only C3
1998/05/02	05:31:56	Halo	360	428	287	157	-12.3	214
1998/05/02	14:06:12	Halo	360	979	954	937	-5.6	315
1998/05/03	22:02:55	Halo	360	669	659	662	-0.9	304
1998/11/05	20:58:59	Halo	360	1124	1341	1213	32.5	299	Only 3 points, Only C3
1999/07/28	02:06:07	101	117	506	408	0	-15.5	57
1999/07/28	09:06:05	Halo	360	464	424	424	-3.1	324
1999/09/20	06:06:05	Halo	360	604	549	357	-14.5	14	Faint. Difficult to measure.