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Coronal Mass Ejection
Catalog: M2M_CATALOG
Start Time: 2025-10-23T16:38Z ( STEREO A: SECCHI/COR2 )
All Detecting Spacecrafts:
STEREO A: SECCHI/COR2
SOHO: LASCO/C2
Activity ID: 2025-10-23T16:38:00-CME-001 (version 1)
Source Location: S16W22
Active Region Number: 14256
Note Keyword:
FF: Event fails/disappears before exiting COR2
Source Signature Keyword:
Morphology Keyword:
Note: This CME is visible to the east in STEREO A COR2 imagery and may be faintly visible to the southwest in SOHO LASCO C2 imagery. The source is speculative but may be related to an eruption from Active Region 14256 (S16W22) starting around 2025-10-23T15:45Z as seen in GOES SUVI 195/284/304 and STEREO A EUVI 304 imagery. 
Version 1 submitted on 2025-10-23T23:47Z by Mattie Anastopulos
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 10.0 -5.0 465.0 S 30.0 2025-10-23T23:41Z This measurement is speculative as this event is difficult to observe in SOHO LASCO C2 imagery due to the faintness and overlapping material from preceding events. However, this measurement is based on the approximate source location and best fit between STEREO A COR2 and SOHO LASCO C2 imagery. 1: Result 1 (2.0 AU)
Earth = 2025-10-26T13:00Z (PE: -24.6 h)
OSIRIS-APEX = 2025-10-26T10:02Z
Solar Orbiter = 2025-10-25T19:50Z
STEREO A = 2025-10-26T12:00Z (PE: -25.0 h)
Mattie Anastopulos on 2025-10-23T23:49Z



All directly linked activities:
2025-10-27T13:02:00-IPS-001
Location: STEREO A
2025-10-27T13:38:00-IPS-001
Location: Earth


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