26 April 2022
20220425 Week Rotation Today Rotation Week 20220427



Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 E15S32
(-206",-439")
E43-W17
(60)
6.0 -1.8 -2.0e21
2 E11N39
(-139",655")
E18-E01
(17)
0.5 -1.6 -1.6e20
3 E35S76
(-129",-909")
E77-E03
(74)
0.4 -0.8 -1.6e20

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 26-Apr-2022 23:30 UT .