12 September 2013
⇐20130911 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20130913⇒

NOAA
4 Active Regions
11838
11839
11840
11841

Flare Forecast
Flare Forecast
MM MotD

Coronal Holes


Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 W19N31
(270",391") 		E23-W41
(64) 		5.1 -4.2 -6.5e33
2 E29S02
(-460",-142") 		E34-E23
(11) 		0.6 3.9 7.8e32

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 12-Sep-2013 23:35 UT .