28 April 2016
⇐20160427 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20160429⇒



Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 E00N20
(-6",394") 		E17-W18
(35) 		3.1 -4.4 -3.5e33
2 E16S74
(-71",-895") 		E66-W73
(139) 		1.0 -1.1 -2.9e33
3 W13S16
(214",-195") 		W01-W18
(17) 		0.9 -5.1 -1.0e33
4 W25N66
(162",897") 		E00-W35
(35) 		0.4 1.1 1.4e33

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 28-Apr-2016 23:43 UT .