11 September 2012
⇐20120910 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20120912⇒

NOAA
5 Active Regions
11564
11566
11567
11568
11569

Flare Forecast
Flare Forecast
MM MotD

Coronal Holes


Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 W33N28
(455",354") 		W26-W43
(17) 		0.6 -1.6 -4.0e32
2 E33S17
(-494",-375") 		E37-E24
(13) 		0.5 0.9 2.0e32
3 W25S40
(304",-693") 		W15-W35
(20) 		0.5 -3.5 -1.2e33
4 W31S03
(487",-148") 		W27-W36
(9) 		0.3 -1.5 -1.3e32
5 W36S36
(451",-638") 		W35-W39
(4) 		0.0 -4.2 -1.5e32

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 11-Sep-2012 21:00 UT .