19 February 2014
⇐20140218 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20140220⇒



Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 W23N39
(295",687") 		E24-W51
(75) 		3.9 0.5 1.2e33
2 E38N07
(-597",216") 		E62-E16
(46) 		2.1 2.8 2.7e33
3 E39N23
(-556",468") 		E62-E22
(40) 		1.5 -1.0 -8.7e32

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-Feb-2014 20:35 UT .