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Coronal Mass Ejection
Catalog: M2M_CATALOG
Start Time: 2025-12-29T20:36Z ( SOHO: LASCO/C2 )
All Detecting Spacecrafts:
SOHO: LASCO/C2
SOHO: LASCO/C3
GOES: CCOR-1
Activity ID: 2025-12-29T20:36:00-CME-001 (version 1)
Source Location: S10W63
Note Keyword:
GAP: Data gap
Source Signature Keyword:
PEA: Post eruption arcade
Morphology Keyword:
Note: This CME is visible to the west in SOHO LASCO C2/C3 and GOES CCOR-1 imagery. This event is not seen in STEREO A COR2 imagery in real-time due to a data gap starting at 2025-12-29T16:53Z. The source is an eruption centered near S10W63 starting around 2025-12-29T19:40Z seen in SDO AIA 131/171/193/304 imagery and GOES SUVI 131/171/195/284/304 imagery. Post eruptive arcades are visible starting around 2025-12-29T21:00Z in SDO AIA 193 imagery. 
Version 1 submitted on 2025-12-29T23:01Z by Mattie Anastopulos
A Notification with ID 20251229-AL-003 was sent on 2025-12-29T23:57Z

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 63.0 -4.0 706.0 C 20.0 2025-12-30T01:00Z Measurement based on the source longitude. A triangulated measurement was not available due to a data gap in STEREO A COR2 imagery at the time of this event. The measured parameters may vary slightly as a result. 1: Result 1 (2.0 AU)
STEREO A = 2026-01-01T04:31Z
OSIRIS-APEX = 2026-01-01T04:00Z
2: Result 2 (5.5 AU)
STEREO A = 2026-01-01T03:20Z
OSIRIS-APEX = 2026-01-01T04:00Z
Mattie Anastopulos on 2025-12-29T23:04Z



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