19 April 2014
⇐20140418 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20140420⇒



Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 W21N50
(220",781") 		E12-W39
(51) 		3.7 0.2 8.3e32
2 E33S59
(-266",-779") 		E75-W12
(87) 		3.1 -0.2 -8.5e32

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 19-Apr-2014 23:35 UT .