31 March 2019
⇐20190330 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20190401⇒

NOAA
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Flare Forecast
Flare Prediction System
MM MotD

Coronal Holes


Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 E05S48
(-52",-633") 		E38-W29
(67) 		13.1 -0.6 -3.4e21
2 E47S27
(-622",-370") 		E56-E33
(23) 		0.5 -0.9 -2.8e20

Note: Solar Monitor's coronal hole segmentations are performed by CHIMERA, a copy of which is available at: github.com/TCDSolar/CHIMERA.

The operations of the CHIMERA algorithm is described in a peer reviewed paper: arxiv.org/abs/1711.11476.

An extensive copy of coronal hole properties are available at: solarmonitor.org/data.

The latest positions of the coronal holes are given in heliocentric co-ordinates, and the region positions are valid on 31-Mar-2019 19:30 UT .