21 May 2022
20220520 Week Rotation Today Rotation Week 20220522



Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 E40S26
(-544",-397")
E69-E21
(48)
2.1 -2.4 -1.1e21
2 E23N29
(-325",482")
E31-E17
(14)
0.7 -6.8 -9.5e20
3 E26N42
(-302",661")
E31-E22
(9)
0.1 -2.5 -7.9e19
4 E46N36
(-552",579")
E50-E42
(8)
0.1 -4.4 -1.4e20
5 W64N09
(842",160")
W58-W70
(12)
0.1 -1.0 -2.8e19
6 E33N38
(-404",604")
E35-E31
(4)
0.1 -3.9 -5.5e19

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 21-May-2022 23:30 UT .