21 April 2014
20140420 Week Rotation Today Rotation Week 20140422



Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 W03S61
(22",-788")
E45-W44
(89)
3.1 -0.4 -1.0e33
2 W43N46
(451",732")
W24-W63
(39)
1.4 0.2 4.0e32
3 W11N54
(106",816")
E08-W18
(26)
0.5 -0.5 -2.8e32
4 E52N44
(-544",699")
E57-E45
(12)
0.4 0.4 3.2e32
5 W26S30
(361",-411")
W24-W27
(3)
0.1 -2.4 -7.8e31

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 21-Apr-2014 23:35 UT .