24 September 2023
20230923 Week Rotation Today Rotation Week 20230925



Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 W51N45
(524",620")
W25-W58
(33)
1.1 -2.0 -6.2e20
2 E13N50
(-141",655")
E32-W05
(37)
0.5 -1.3 -1.4e20
3 E50N38
(-582",520")
E63-E34
(29)
0.5 3.4 4.4e20
4 E19N31
(-267",393")
E22-E15
(7)
0.1 5.0 7.5e19
5 E11N05
(-188",-25")
E13-E10
(3)
0.1 -2.3 -1.8e19

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 24-Sep-2023 23:30 UT .