UCMEO 93001 40217
1700/
40215 60912 81354 0002/ 360// 233// 41791
40215 ///// ///// ///// ///// /////
99999
PLAIN
SOHO/LASCO HALO CME February 15, 2024
C2 Start Time: 9:12 - 9:24 UT
C3 Start Time: 9:30 - 9:42 UT
Type of CME:
Asymmetric HALO CME — FRONTSIDE
pa1: 000 pa2: 360
Total Width: 360 degrees
Velocity Measurements:
C2: 2 points 1677.4 km/sec @ PA 179.15
C3: 8 points 1764.0 km/sec @ PA 179.26
Average through both(C2/C3) fields: 1791.4 km/sec
Acceleration: -48.75 m/sec^2
COMMENT:
LASCO C2/C3 show a full halo CME which emerges from the S with a bright
leading edge and core. The CME progresses outwards in alll directions
with the bulk of the CME being in the S direction. The CME is the
result of a far sided eruption
as evidence of wide opening field lines observed beyond the
S limb beginning at 9:06 UT best seen in SDO AIA 171/193.
STEREO Beacon Data COR2 A, preliminary time/height measurements gives a
velocity of 1729.2 km/s at a PA of 180.44. STEREO COR2A shows a bright
halo emerging from the S at 9:23UT. The CME progresses outwards in all
directions with majority of the CME being in the S. As the CME
propages outwards it wraps around to the N into a full halo.
Preliminary UCMEO velocity and position measurements are delivered
first.
Images, movies, and time/height information for this event will be
available at:
https://umbra.nascom.nasa.gov/lasco/observations/halo/2024/2402115
Best Regards,
--James Tabourne
BT
[Images from original message are omitted here]
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