24 May 2025
20250523 Week Rotation Today Rotation Week 20250525



Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 W39S49
(391",-708")
E54-W83
(137)
11.1 1.2 3.8e21
2 E25S22
(-377",-332")
E33-E14
(19)
2.1 -6.5 -2.4e21
3 E06N06
(-91",124")
E10-W02
(12)
0.9 -2.4 -3.4e20
4 E54N27
(-683",442")
E59-E41
(18)
0.9 -2.8 -7.4e20
5 E41S05
(-618",-70")
E45-E35
(10)
0.5 -3.6 -3.9e20

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-May-2025 23:30 UT .