22 April 2014
⇐20140421 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20140423⇒



Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 W17S60
(139",-788") 		E39-W45
(84) 		3.2 -0.3 -1.0e33
2 W09N56
(85",832") 		E22-W24
(46) 		1.4 -0.2 -4.3e32
3 E38N45
(-415",723") 		E56-E22
(34) 		1.1 0.5 6.3e32

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 22-Apr-2014 23:35 UT .