23 January 2013
⇐20130122 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20130124⇒

NOAA
4 Active Regions
11658
11660
11661
11662

Flare Forecast
Flare Forecast
MM MotD

Coronal Holes


Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 W01S44
(17",-606") 		E36-W21
(57) 		4.0 -2.8 -4.6e33
2 E11N02
(-185",125") 		E15-E02
(13) 		0.6 -1.0 -1.2e32
3 W06S03
(98",32") 		W03-W08
(5) 		0.1 -1.5 -1.4e31
4 E18N12
(-292",292") 		E20-E16
(4) 		0.0 2.4 3.1e31

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 23-Jan-2013 22:00 UT .