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DONKI: View SW Activity
Coronal Mass Ejection
Catalog: M2M_CATALOG
Start Time: 2026-08-23T00:12Z ( SOHO: LASCO/C2 )
All Detecting Spacecrafts:
SOHO: LASCO/C2
SOHO: LASCO/C3
GOES: CCOR-1
Activity ID: 2026-08-23T00:12:00-CME-001 (version 1)
Source Location: S13W90
Active Region Number: 14514
Note Keyword:
DFL: Likely deflection of the event within the FOV
CHP: CME - Coronal Hole Proximity
Source Signature Keyword:
OFL: Moving/Opening field lines
BR: Brightening
DIM: Dimming
Morphology Keyword:
O: Other
Note: Thin, fast CME observed to the W in SOHO LASCO C2/C3 and GOES CCOR-1, not observed in STEREO A COR2 likely due to its occulting disk. The source is AR 14514 (S10W83), with field line movement followed by a post eruptive arcade observed in SDO AIA 171/193 near the SW limb, centered approximately ~S13W90 (but may vary W80-W100), starting around 2026-08-22T23:47Z. Also observed brightening, field line movement, and slight dimming from this region in STEREO A EUVI 195/304.
Version 1 submitted on 2026-08-23T01:53Z by Tony Iampietro
A Notification with ID
20260823-AL-001 was sent on 2026-08-23T02:19Z
A Notification with ID
20260823-AL-002 was sent on 2026-08-23T14:20Z
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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 |
95.0 |
10.0 |
959.0 |
C |
16.0 |
2026-08-23T04:06Z |
UPDATED measurement based on best fit among SOHO LASCO C2/C3, GOES CCOR-1, and STEREO A COR2. This updated measurement relies more on later frames as there appears to be some northward deflection later in the propagation of the CME. |
1: Result 1 (2.0 AU)
Mars = 2026-08-26T10:03Z
Psyche = 2026-08-26T14:53Z
STEREO A = 2026-08-25T08:00Z
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Elizabeth Juelfs on 2026-08-23T13:06Z |
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CME Analysis
|
M2M_CATALOG |
LE
|
false |
SWPC_CAT |
90.0 |
7.0 |
1148.0 |
O |
10.0 |
2026-08-23T03:22Z |
Preliminary measurement with 2 frames of LASCO C3 and 1 frame of LASCO C2 as currently available. This front has a more faint nose and a brighter piece following it; this preliminary analysis captures both in one measurement. Longitude W90 is used as a reasonable approximation and not a plane-of-sky, but could vary W80-W100. |
1: Result 1 (2.0 AU)
Mars = 2026-08-26T12:46Z
Psyche = 2026-08-26T13:00Z
STEREO A = 2026-08-25T07:00Z
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2026-08-23T01:44Z |
Tony Iampietro on 2026-08-23T01:55Z |
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