18 April 2014
⇐20140417 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20140419⇒



Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 W16N47
(183",760") 		E20-W49
(69) 		3.9 0.3 1.1e33
2 E41S58
(-336",-768") 		E68-E19
(49) 		1.6 -0.3 -5.6e32

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 18-Apr-2014 23:35 UT .