28 April 2022
20220427 Week Rotation Today Rotation Week 20220429



Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 W32S25
(459",-339")
W09-W43
(34)
3.2 -2.2 -1.3e21
2 E05S44
(-64",-607")
E19-W14
(33)
1.6 -0.7 -2.2e20
3 E30S74
(-130",-895")
E44-W44
(88)
0.6 -0.8 -2.3e20
4 W22N38
(283",641")
W19-W25
(6)
0.1 -2.9 -6.7e19

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 28-Apr-2022 23:30 UT .