24 December 2016
⇐20161223 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20161225⇒

NOAA
2 Active Regions
12619
12620

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 W41S22
(595",-336") 		W02-W67
(65) 		4.9 1.4 3.6e33
2 E07N60
(-57",863") 		E66-W50
(116) 		3.7 0.4 1.9e33
3 W57N35
(669",574") 		W46-W73
(27) 		0.3 0.9 4.8e32

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 24-Dec-2016 20:30 UT .