29 April 2012
⇐20120428 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20120430⇒



Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 W21S70
(118",-870") 		E63-W44
(107) 		1.6 1.1 3.4e33
2 W26N30
(362",531") 		W18-W32
(14) 		0.4 1.6 3.1e32

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 29-Apr-2012 23:00 UT .