22 February 2013
⇐20130221 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20130223⇒

NOAA
6 Active Regions
11671
11673
11675
11676
11678
11679

Flare Forecast
Flare Forecast
MM MotD

Coronal Holes


Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 E22S53
(-225",-700") 		E51-W15
(66) 		1.6 -3.1 -3.2e33
2 W56S44
(583",-619") 		W48-W70
(22) 		0.2 -3.6 -1.0e33
3 W31N31
(431",580") 		W27-W37
(10) 		0.2 -4.9 -6.2e32
4 W40S47
(422",-642") 		W34-W45
(11) 		0.1 -2.4 -9.6e31

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 22-Feb-2013 22:00 UT .