9 December 2011
⇐20111208 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20111210⇒



Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 W26N69
(148",913") 		E19-W40
(59) 		0.6 -0.3 -6.7e32
2 E25S41
(-309",-643") 		E27-E22
(5) 		0.0 -5.9 -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 9-Dec-2011 23:47 UT .