20 October 2012
⇐20121019 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20121021⇒



Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 W16S25
(240",-488") 		W08-W23
(15) 		0.3 12.1 1.4e33
2 W25N24
(374",310") 		W24-W27
(3) 		0.0 -15.3 -1.9e32

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 20-Oct-2012 21:00 UT .