20 August 2022
20220819 Week Rotation Today Rotation Week 20220821



Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 E25N12
(-388",100")
E41-W07
(48)
5.4 0.2 1.9e20
2 W51N40
(567",552")
W31-W67
(36)
1.1 -2.3 -7.2e20
3 W28S12
(438",-289")
W19-W34
(15)
0.5 -0.9 -9.0e19
4 W41S31
(540",-556")
W34-W48
(14)
0.5 -2.1 -2.7e20
5 E25S66
(-164",-901")
E32-W08
(40)
0.4 -0.4 -8.0e19

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 20-Aug-2022 23:30 UT .