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Coronal Mass Ejection
Catalog: M2M_CATALOG
Start Time: 2026-07-20T19:53Z ( STEREO A: SECCHI/COR2 )
All Detecting Spacecrafts:
STEREO A: SECCHI/COR2
Activity ID: 2026-07-20T19:53:00-CME-001 (version 2)
Source Location: N06E09
Active Region Number: 14493
Note Keyword:
Faint: Faint event; may affect type assignment
GAP: Data gap
Source Signature Keyword:
FLR: Flare
OFL: Moving/Opening field lines
BR: Brightening
Morphology Keyword:
O: Other
Note: Thin, faint CME observed to the NE in STEREO A COR2 only, likely due to the GOES CCOR-1 occulting disk and real-time SOHO LASCO C2/C3 downlink gap (but also may be blocked by its occulting disk). The source is likely AR 14493, associated with an M1.1 flare in SDO AIA 131 peaking at 2026-07-20T19:20Z, also observed as brightening and field line movement in SDO AIA 171/193 and field line movement in STEREO A EUVI 195 near its east limb around 2026-07-20T19:55Z. 
Version 1 submitted on 2026-07-20T22:01Z by Tony Iampietro
Version 2 submitted on 2026-07-21T20:48Z by Mary Aronne
A Notification with ID 20260721-AL-001 was sent on 2026-07-21T00:08Z

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 -9.0 14.0 579.0 C 10.0 2026-07-21T01:10Z STEREO A COR2 only 3D analysis using the source longitude of E09 to approximate the measurement, as such parameters may vary slightly. Due to several poor quality running difference images, only 3 available frames are used for this analysis. 1: Result 1 (2.0 AU)
Earth = 2026-07-23T07:00Z
Europa Clipper = 2026-07-24T18:00Z
OSIRIS-APEX = 2026-07-24T06:00Z
2026-07-20T21:50Z Mary Aronne on 2026-07-21T20:32Z



All directly linked activities:
2026-07-20T19:15:00-FLR-001
FLR Type: M1.1


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