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Coronal Mass Ejection
Catalog: M2M_CATALOG
Start Time: 2025-09-21T21:24Z ( SOHO: LASCO/C2 )
All Detecting Spacecrafts:
SOHO: LASCO/C2
SOHO: LASCO/C3
STEREO A: SECCHI/COR2
GOES: CCOR-1
Activity ID: 2025-09-21T21:24:00-CME-001 (version 1)
Source Location: N50E70
Note Keyword:
DPL: CME exhibits dimpled front
Source Signature Keyword:
FIL: Filament eruption
Morphology Keyword:
O: Other
Note: Faint asymmetrical CME with an irregular front to the NE with the start time that could be even earlier. The CME overlaps with a NE streamer making analysis more difficult. Source is likely a large prominence eruption seen in GOES SUVI 304 and STEREO A EUV 304, slowly developing close to the NE limb (very approx. ~N50E70) after 2025-09-21T19Z and having two distinct lobes, with the more eastern lobe possibly falling back into corona. 
Version 1 submitted on 2025-09-21T23:47Z by Anna Chulaki
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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 -58.0 54.0 613.0 C 22.0 2025-09-22T02:17Z Very approximate Analysis based on the fit with all three coronagraphs (SOHO LASCO, STEREO A COR2 and GOES CCOR-1). There seems to be a bit of a westward deflection from the source location. Not modeled Anna Chulaki on 2025-09-22T01:13Z



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