1 February 2016
⇐20160131 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20160202⇒

NOAA
3 Active Regions
12489
12490
12491

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 W18N47
(208",778") 		E38-W62
(100) 		6.3 1.5 8.3e33
2 W71S67
(358",-879") 		W70-W76
(6) 		0.1 -1.3 -7.1e32

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 1-Feb-2016 21:30 UT .