19 August 2013
20130818 Week Rotation Today Rotation Week 20130820



Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 W06N11
(92",76")
E15-W14
(29)
2.3 5.3 2.1e33
2 W61N33
(693",471")
W37-W84
(47)
1.5 -1.4 -2.7e33
3 E52N11
(-732",106")
E61-E43
(18)
0.7 -0.6 -2.9e32
4 W18N65
(127",805")
W03-W28
(25)
0.4 0.7 2.9e32

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-Aug-2013 15:45 UT .