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Coronal Mass Ejection
Catalog: M2M_CATALOG
Start Time: 2026-05-16T08:09Z ( STEREO A: SECCHI/COR2 )
All Detecting Spacecrafts:
STEREO A: SECCHI/COR2
Activity ID: 2026-05-16T08:09:00-CME-001 (version 2)
Note Keyword:
OVR: Event partially overlaps with another CME
PRM: Prominence material (filamentary structures)
Source Signature Keyword:
FLR: Flare
FIL: Filament eruption
OFL: Moving/Opening field lines
Morphology Keyword:
F: Flux Rope
Note: CME observed to the W in STEREO A COR2, not observed in the other coronagraphs likely due to the occulting disk blocking the front in LASCO and CCOR-1. The source is likely a new far-sided active region located approximately around S05-S18 and W165-W185, as viewed from Solar Orbiter PHI at 2026-05-16T05:09Z. Solar Orbiter STIX observed an estimated X1 [estimated range M7,X2] flare from this approximate area of the disk, peaking at 2026-05-16T07:08Z. STEREO A EUVI 195/304 observe filament ejecta and field line movement starting at 2026-05-16T07:15Z over its west limb (STEREO A is located around W57.7 at this time, putting its limb around W147.7).
Version 1 submitted on 2026-05-16T15:15Z by Tony Iampietro
Version 2 submitted on 2026-05-19T21:10Z by Mary Aronne
A Notification with ID
20260516-AL-005 was sent on 2026-05-16T17:41Z
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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 |
175.0 |
2.0 |
548.0 |
C |
40.0 |
2026-05-16T14:28Z |
STEREO A COR2 single spacecraft 3D analysis, using W175 as an estimated central location for the eruption following the far-sided analysis detailed in the CME note. Longitude could vary W165-W185. |
1: Result 1 (2.0 AU)
Mars = 2026-05-20T08:00Z
Psyche = 2026-05-20T06:00Z
Solar Orbiter = 2026-05-20T00:00Z
2: Result 2 (2.0 AU)
Mars = 2026-05-20T08:00Z
Psyche = 2026-05-20T06:00Z
Solar Orbiter = 2026-05-20T00:00Z
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Tony Iampietro on 2026-05-16T15:16Z |
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