24 January 2013
⇐20130123 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20130125⇒

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 W23S45
(269",-630") 		E14-W33
(47) 		3.0 -2.8 -4.4e33
2 E17N54
(-170",837") 		E32-W04
(36) 		0.7 0.6 5.7e32
3 W05N04
(81",151") 		E00-W08
(8) 		0.3 -2.0 -1.1e32
4 W09N44
(107",741") 		W04-W12
(8) 		0.1 2.8 1.8e32

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-Jan-2013 22:00 UT .