19 October 2024
20241018 Week Rotation Today Rotation Week 20241020



Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 W60N30
(721",444")
W43-W80
(37)
1.0 2.7 8.9e20
2 W18N09
(300",61")
W04-W26
(22)
0.8 4.5 5.9e20
3 E34S03
(-544",-124")
E40-E28
(12)
0.4 -4.8 -3.2e20
4 E72N54
(-538",759")
E86-E78
(8)
0.2 -1.0 -1.1e20
5 W38N37
(469",524")
W33-W43
(10)
0.1 7.9 2.5e20
6 E41N15
(-616",187")
E44-E38
(6)
0.1 -1.8 -3.6e19

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-Oct-2024 23:30 UT .