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DONKI: View SW Activity
Coronal Mass Ejection
Catalog: M2M_CATALOG
Start Time: 2026-01-31T19:23Z ( SOHO: LASCO/C2 )
All Detecting Spacecrafts:
SOHO: LASCO/C2
STEREO A: SECCHI/COR2
Activity ID: 2026-01-31T19:23:00-CME-001 (version 1)
Note Keyword:
GAP: Data gap
OFL: Outflowing material at the back of the CME
PRM: Prominence material (filamentary structures)
Source Signature Keyword:
FIL: Filament eruption
OFL: Moving/Opening field lines
Morphology Keyword:
O: Other
Note: CME first observed to the SW in STEREO A COR2 before a data gap begins at 2026-01-31T19:38Z preventing a good view of front development, then later to the W in SOHO LASCO C2/C3 and GOES CCOR-1, starting at 2026-01-31T22:12Z in LASCO C2. With an ongoing SOHO LASCO campaign reducing data quality and the STEREO A COR2 gap, no overlapping observations of the front are possible in real-time, but there is good confidence in this being the same front due to an observed far-sided source and no other on-disk sources at this time. The far-sided source is observed in STEREO A EUVI 304/195 starting around 2026-01-31T16:15Z on the west limb as viewed from STEREO A, putting it around W141.8 with the spacecraft currently at W51.8.
Version 1 submitted on 2026-02-01T01:15Z by Tony Iampietro
A Notification with ID
20260201-AL-001 was sent on 2026-02-01T01:53Z
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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 |
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CME Analysis
|
M2M_CATALOG |
LE
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true |
Plane-of-sky |
NONE |
1.0 |
350.0 |
S |
23.0 |
2026-02-01T07:31Z |
SOHO LASCO C2/C3 only plane-of-sky. Considering this analysis true with the speculative nature of the other 3D single spacecraft analysis, due to the factors noted within that analysis entry. |
Not modeled
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Tony Iampietro on 2026-02-01T01:25Z |
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CME Analysis
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M2M_CATALOG |
LE
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false |
SWPC_CAT |
142.0 |
4.0 |
576.0 |
C |
17.0 |
2026-02-01T02:59Z |
3D single spacecraft analysis with SOHO LASCO C3 and one LASCO C2 frame, using the observed source around W141.8 in STEREO A EUVI imagery as the basis, and the longitude could easily vary +-10 degrees. Analysis is quite speculative due to LASCO data quality with an ongoing campaign, STEREO A COR2 data gap, and LASCO C2/C3 and GOES CCOR-1 fronts not aligning well with the lemniscate tool. |
1: Result 1 (2.0 AU)
Juice = 2026-02-05T12:00Z
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Tony Iampietro on 2026-02-01T01:19Z |
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All directly linked activities: |
| No Linked Activity Found. |
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