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Coronal Mass Ejection
Catalog: M2M_CATALOG
Start Time: 2026-06-04T17:23Z ( STEREO A: SECCHI/COR2 )

All Detecting Spacecrafts:

STEREO A: SECCHI/COR2

SOHO: LASCO/C2

SOHO: LASCO/C3

GOES: CCOR-1

Activity ID: 2026-06-04T17:23:00-CME-001 (version 1)

Note Keyword:

Source Signature Keyword:

OFL: Moving/Opening field lines

Morphology Keyword:

Note: Fast, narrow CME first seen to the SW in STEREO A COR2 and to the S in SOHO LASCO C2/C3 and GOES CCOR-1 imagery. A potential source is visible as moving/opening field lines along the southern limb in GOES SUVI 284 after the start time of the CME from STEREO A's perspective. Additionally, there is an eruption visible along/just beyond the SW limb in STEREO A EUVI 195 starting around 2026-06-04T16:35Z.

Version 1 submitted on 2026-06-05T00:18Z by Carina Alden

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	178.0	-41.0	1009.0	O	18.0	2026-06-04T20:44Z	Parameters based on best fit using SOHO LASCO C2/C3 and STEREO A COR2 imagery.	Not modeled	2026-06-04T23:57Z	Carina Alden on 2026-06-05T00:19Z

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