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Coronal Mass Ejection
Catalog: M2M_CATALOG
Start Time: 2025-12-05T07:09Z ( STEREO A: SECCHI/COR2 )
All Detecting Spacecrafts:
STEREO A: SECCHI/COR2
SOHO: LASCO/C2
Activity ID: 2025-12-05T07:09:00-CME-001 (version 1)
Note Keyword:
Faint: Faint event; may affect type assignment
FF: Event fails/disappears before exiting COR2
Source Signature Keyword:
Morphology Keyword:
L: Loop
Note: Faint but clear loop seen in multiple timestamps of STEREO A COR2. We potentially can see a super faint NNE front in SOHO LASCO C2 starting at 2025-12-05T07:48Z, but the front is not seen in C3 and GOES CCOR-1 (possibly because it is too faint). No clear source has been found in EUV imagery. 
Version 1 submitted on 2025-12-05T21:26Z by Anna Chulaki
A Notification with ID 20251206-AL-001 was sent on 2025-12-06T00:33Z

The List of CME Analysis already entered:
Event Type Catalog
Measurement TypeCME measurement type: Leading Edge (LE), Shock Front (SH), Right Hand Boundary (RHB), Left Hand Boundary (LHB), Black/White Boundary (BW), Prominence Core (COR), Disconnection Front (DIS), Trailing Edge (TE).
Prime?"primary flag" which is either True or False. If there are multiple CME analysis entries for a single CME, this flag would indicate which analysis is considered most accurate per measurement type. This is a helpful flag if you would like to download only one most accurate CME analysis per CME per Measurement Type
 Technique Long Lat Speed Type Half Width Time 21.5 Note WSA-ENLIL+Cone Result(s) Measured On Submitted By
CME Analysis M2M_CATALOG LE true SWPC_CAT -14.0 20.0 629.0 C 27.0 2025-12-05T12:28Z Very speculative analysis based on the fit of the faint but clear loop-like front in STEREO A COR2 and the extremely faint fuzzy half-loop front that might be seen in SOHO LASCO C2 in a number of early timeframes to the NNE. 1: Result 1 (2.0 AU)
Earth = 2025-12-08T08:00Z
Solar Orbiter = 2025-12-08T00:00Z
2: Result 2 (5.5 AU)
Earth = 2025-12-08T08:00Z
Solar Orbiter = 2025-12-08T00:00Z
Anna Chulaki on 2025-12-05T21:28Z



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