25 May 2023
20230524 Week Rotation Today Rotation Week 20230526



Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 E07N37
(-95",596")
E21-W13
(34)
1.7 -3.5 -1.2e21
2 W59S20
(769",-306")
W41-W77
(36)
1.1 -2.4 -8.1e20
3 E61S40
(-637",-597")
E79-E48
(31)
0.6 2.5 5.6e20
4 W04N14
(60",253")
W02-W06
(4)
0.0 -5.4 -3.5e19

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 25-May-2023 23:30 UT .