20 April 2014
⇐20140419 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20140421⇒



Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 E24S59
(-201",-778") 		E48-W27
(75) 		3.3 -0.5 -1.5e33
2 W32N46
(357",732") 		W05-W53
(48) 		2.1 0.7 1.5e33

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-Apr-2014 23:35 UT .