11 February 2015
⇐20150210 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20150212⇒

NOAA
4 Active Regions
12277
12280
12281
12282

Flare Forecast
Flare Forecast
MM MotD

Coronal Holes


Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 E12N01
(-200",127") 		E23-W09
(32) 		3.9 -2.5 -2.0e33
2 E75S54
(-552",-764") 		E84-E68
(16) 		0.1 -1.1 -4.0e32

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-Feb-2015 22:35 UT .