UCMEO 93001 40122 1630/
40122 61036 91506 1131/ 282// 333// 30722
40122 60937 81058 ///// ///// 2221/
99999

PLAIN  


SOHO/LASCO  HALO CME January 22, 2024

C2 Start Time:  10:36 - 10:42 UT

C3 Start Time:  11:18 UT

Type of CME:
Asymmetric HALO CME — FRONTSIDE
pa1:  113    pa2:  282       Total Width:  191 degrees

Velocity Measurements:

C2:   5 points     874.5 km/sec @ PA 205.66
C3:   16 points   717.0 km/sec @ PA 205.46
Average through both(C2/C3) fields:  722.7 km/sec  Acceleration: -10.07 m/sec^2

COMMENT:  LASCO C2/C3 show a bright partial halo CME. The CME emerges with a bright leading edge from the south slightly skewed to the west . The halo CME propagates towards the south with cavity and core.The halo CMEs source is a filament eruption on the south hemisphere of the disk taking liftoff at approximately 9:54 UT. The eruption is followed by dual-ribbon post eruptive arcade.

STEREO Beacon Data COR2 A, due to gaps in data from 10:23 - 15:23 UT, the CME could not be captured. Preliminary time/height could not be gathered at this time.

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/2024/240122



Best Regards,

--James Tabourne

BT
[Images from original message are omitted here]

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