20 February 2017
⇐20170219 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20170221⇒

NOAA
2 Active Regions
12636
12637

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 W14S25
(210",-302") 		E21-W81
(102) 		8.5 1.3 2.6e33
2 W05N62
(36",906") 		E52-W39
(91) 		1.7 0.3 1.3e33

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 20-Feb-2017 20:30 UT .