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Coronal Mass Ejection
Catalog: M2M_CATALOG
Start Time: 2026-07-21T07:48Z ( SOHO: LASCO/C2 )
All Detecting Spacecrafts:
SOHO: LASCO/C2
SOHO: LASCO/C3
STEREO A: SECCHI/COR2
GOES: CCOR-1
Activity ID: 2026-07-21T07:48:00-CME-001 (version 1)
Source Location: N45W60
Note Keyword:
OVR: Event partially overlaps with another CME
PRM: Prominence material (filamentary structures)
Source Signature Keyword:
FIL: Filament eruption
DIM: Dimming
Morphology Keyword:
Note: CME first seen to the NW in SOHO LASCO C2 starting at 2026-07-21T07:48Z. It also seen to the NW in SOHO LASCO C3 and GOES CCOR-1 and to the N in STEREO A COR2. The source of this CME is a filament eruption in the NW quadrant of the Earth-facing disk best seen in GOES SUVI 304 approximately centered around N45W60. The filament can be seen lifting off the disk as early as 2026-07-21T05:00Z. The filament eruption is followed by a wide-spread area of dimming best seen in SDO AIA 195. This CME follows and partially overlaps with the back of large, far-sided CME: 2026-07-21T06:23Z.
Version 1 submitted on 2026-07-21T13:20Z by Elizabeth Juelfs
	
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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 61.0 38.0 601.0 C 24.0 2026-07-21T14:04Z Measurement based on best fit among SOHO LASCO C2/C3, GOES CCOR-1, and STEREO A COR2 and visible, on-disk source location. 1: Result 1 (2.0 AU)
STEREO A = 2026-07-24T12:00Z
Elizabeth Juelfs on 2026-07-21T13:24Z



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