20 April 2022
20220419 Week Rotation Today Rotation Week 20220421



Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 W29S02
(465",49")
W12-W42
(30)
2.0 -0.1 -3.5e19
2 W02N12
(29",279")
E10-W15
(25)
1.5 4.2 1.0e21
3 W38S68
(216",-860")
E69-W56
(125)
1.3 -1.0 -5.5e20
4 W36S09
(554",-75")
W33-W40
(7)
0.1 -1.0 -2.2e19
5 E08S53
(-82",-705")
E11-E05
(6)
0.0 -1.7 -1.6e19
6 E19N04
(-314",147")
E20-E18
(2)
0.0 2.0 1.2e19

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-Apr-2022 23:30 UT .