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Coronal Mass Ejection
Catalog: M2M_CATALOG
Start Time: 2026-09-11T05:36Z ( SOHO: LASCO/C2 )
All Detecting Spacecrafts:
SOHO: LASCO/C2
SOHO: LASCO/C3
STEREO A: SECCHI/COR2
Activity ID: 2026-09-11T05:36:00-CME-001 (version 1)
Note Keyword:
Source Signature Keyword:
PEA: Post eruption arcade
Morphology Keyword:
Note: CME visible to the NW in SOHO LASCO C2/C3 and STEREO A COR2. The CME is not visible in GOES CCOR-1 due to Earthshine. The potential source may be an eruption seen near the NW limb from the point of view of STEREO A EUV 195 around 2026-09-11T02:55Z as post-eruption arcades. 
Version 1 submitted on 2026-09-11T12:03Z by Mary Aronne
No Notification has been sent for this activity yet.

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 134.0 55.0 549.0 C 20.0 2026-09-11T12:19Z Measurement based on the best fit between SOHO LASCO C2/C3 and STEREO A COR2 in SWPC_CAT. Not modeled Mary Aronne on 2026-09-11T12:04Z



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