24 March 2012
⇐20120323 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20120325⇒

NOAA
6 Active Regions
11438
11440
11441
11443
11444
11445

Flare Forecast
Flare Forecast
MM MotD

Coronal Holes


Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 E33S62
(-244",-801") 		E49-W38
(87) 		3.8 0.5 2.3e33
2 E17N09
(-283",258") 		E32-W04
(36) 		1.8 -1.1 -4.7e32
3 W23N43
(276",733") 		W11-W33
(22) 		0.8 2.9 2.0e33
4 W07S19
(109",-208") 		W03-W11
(8) 		0.3 -4.6 -3.0e32

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 24-Mar-2012 20:00 UT .