22 June 2023
20230621 Week Rotation Today Rotation Week 20230623



Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 E15N44
(-178",638")
E30-E02
(28)
1.0 -2.4 -5.1e20
2 E15N02
(-244",4")
E20-E08
(12)
0.4 -1.8 -1.2e20
3 W00N05
(6",57")
E05-W05
(10)
0.2 -1.1 -3.5e19
4 W08N36
(100",528")
W05-W09
(4)
0.0 -11.0 -7.7e19

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 22-Jun-2023 23:30 UT .