UCMEO 93001 30717
1700/
30716 60442 80819 0002/ 360// 234// 31888
30716 60431 9//// 4//// ///// 4222/
99999
PLAIN
SOHO/LASCO HALO CME July 16, 2023 FARSIDE
C2 Start Time: 4:42 UT
C3
Start Time: ****
Type of CME:
Symmetric HALO CME — FARSIDE
pa1: 000 pa2:
360 Total Width: 360 degrees
Velocity Measurements:
C2: 4 points 1888.1 km/sec @
PA 288.58 Acceleration: *** km/sec^2
C3:
***
Average through both(C2/C3) fields:
***
COMMENT: SOHO/LASCO C2 shows a bright full halo CME to the west. The
event is first seen in C2 as a bright loop to the west starting
at 4:42 UT. It then propagates to a full halo cme by 5:52 UT. Due to
the STEREO COR2-A flyby earth special observation program, c3 images
were reduced to a cadence of once every 3 hours not allowing accurate
time/height data to be gathered.
The
CME is associated with widely moving/opening field lines beyond NW limb
seen best in GOES SUVI 171/284.
STEREO Beacon Data
COR2 A, shows a bright CME pointed west.
Preliminary time/height measurements gives a velocity @ 1587.1 km/sec @
PA 250.62
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/2023/230716/
Best Regards,
--James Tabourne
BT
[Images from original message are omitted here]
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