CME Analysis Information (for CME activity ID: 2025-11-21T19:24:00-CME-001)
Measurement Creation Time:
Catalog: M2M_CATALOG
Data Level: 0 (0=real-time, 1=real-time and checked by supervising forecaster, 2=retrospective science level data analysis)
Use as primary measurement: true
Measurement Technique:
SWPC_CAT
Detecting Instruments:
SOHO: LASCO/C2
SOHO: LASCO/C3
STEREO A: SECCHI/COR2
GOES: CCOR-1
Image Type:
running difference
Speed (km/s):
1077.0
Speed measured at height (Rs):
10.4
Type: O
Direction (LON/LAT in HEEQ):
-172.0/
13.0
Half Angular Width (degree): 49.0
Minor Half-width (degree): None Entered
Tilt (degree): None Entered
Time@21.5: 2025-11-21T22:45Z
Info/Session URL: None Entered
Note: Parameters based on best fit of the BULK of the CME, however the fit is better in STEREO A COR2 imagery than in SOHO or GOES imagery due to triangulation limitations. The half-width appears too wide for the visible bulk feature in SOHO LASCO C2/C3 and GOES CCOR-1 imagery compared to the visible bulk feature in STEREO A COR2 imagery. This may be due to limited viewpoints of the full CME.
Measurement Feature Code(s):
LE: Leading Edge
General Keyword(s):
Version 1 submitted on 2025-11-21T23:07Z by Carina Alden
A Notification with ID
20251122-AL-001 was sent on 2025-11-22T00:11Z
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