27 April 2022
20220426 Week Rotation Today Rotation Week 20220428



Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 W09S34
(124",-471")
E31-W31
(62)
6.6 -1.6 -1.9e21
2 E26S78
(-85",-916")
E65-W16
(81)
0.3 -0.9 -1.9e20
3 W07N39
(84",662")
E01-W11
(12)
0.2 -2.3 -9.9e19
4 E03N01
(-45",97")
E04-E01
(3)
0.0 -2.0 -1.4e19

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 27-Apr-2022 23:30 UT .