13 August 2018
⇐20180812 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20180814⇒

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 W17N54
(165",706") 		E74-W38
(112) 		10.3 1.3 8.9e21
2 E54N04
(-763",3") 		E62-E45
(17) 		0.7 -0.9 -5.2e20

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 13-Aug-2018 23:10 UT .