11 October 2018
⇐20181010 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20181012⇒

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 W01S25
(15",-496") 		E24-W24
(48) 		10.9 -0.7 -2.4e21
2 W25N73
(119",886") 		E81-W72
(153) 		2.0 1.4 6.0e21
3 E16S65
(-115",-907") 		E50-W24
(74) 		0.8 -0.8 -2.0e21
4 W29S68
(177",-919") 		W29-W44
(15) 		0.1 -1.6 -9.3e20

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 11-Oct-2018 23:10 UT .