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Coronal Mass Ejection
Catalog: M2M_CATALOG
Start Time: 2026-09-09T10:23Z ( STEREO A: SECCHI/COR2 )
All Detecting Spacecrafts:
STEREO A: SECCHI/COR2
Activity ID: 2026-09-09T10:23:00-CME-001 (version 2)
Source Location: N15W05
Active Region Number: 14524
Note Keyword:
Faint: Faint event; may affect type assignment
Source Signature Keyword:
FLR: Flare
Morphology Keyword:
Note: This CME is faintly seen to the East in STEREO A COR2 imagery. It appears to be associated with a C3.4 flare (caught in GOES-S) peaking at 2026-09-09T09:08Z (occurs during an eclipse in GOES-P) from AR 14524 (N15W05). This CME is very slow and not clearly seen in the SOHO LASCO C2/C3 or GOES CCOR-1 imagery. There is a simultaneous CME visible to the East in SOHO LASCO C2 around the same time, however this CME is believed to be associated with a slow farsided filament eruption and is not the same CME feature seen in STEREO A that is associated with this entry. 
Version 1 submitted on 2026-09-09T19:07Z by Carina Alden
Version 2 submitted on 2026-09-09T19:35Z by Melissa Kane
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 5.0 5.0 207.0 S 39.0 2026-09-10T02:47Z Parameters based on potential source location and best fit in STEREO A COR2 imagery. Not modeled Carina Alden on 2026-09-09T19:08Z



All directly linked activities:
2026-09-09T08:48:00-FLR-001
FLR Type: C3.4


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