12 April 2012
⇐20120411 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20120413⇒

NOAA
3 Active Regions
11454
11455
11456

Flare Forecast
Flare Forecast
MM MotD

Coronal Holes


Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 W31N06
(498",189") 		W21-W43
(22) 		3.5 -5.1 -6.2e33
2 W38S32
(495",-446") 		W29-W49
(20) 		1.4 -1.5 -1.1e33
3 E12S25
(-188",-313") 		E14-E09
(5) 		0.2 -5.6 -3.1e32
4 W26N25
(378",479") 		W24-W28
(4) 		0.1 -9.8 -2.2e32

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 12-Apr-2012 23:00 UT .