22 September 2013
20130921 Week Rotation Today Rotation Week 20130923



Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 W36N47
(381",631")
E23-W45
(68)
5.2 -0.9 -3.2e33
2 W18N02
(300",-81")
E01-W27
(28)
1.7 -0.1 -4.5e31
3 E09N01
(-144",-105")
E11-E07
(4)
0.0 -1.7 -1.5e31
4 E25N61
(-196",778")
E29-E23
(6)
0.0 -2.5 -8.7e31

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-Sep-2013 23:35 UT .