24 July 2025
20250723 Week Rotation Today Rotation Week 20250725



Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 E40N37
(-483",512")
E72-E16
(56)
2.1 -2.2 -1.0e21
2 E36N71
(-187",864")
E86-W79
(165)
1.3 -0.7 -4.2e20
3 W62N21
(781",300")
W50-W76
(26)
0.8 -3.1 -8.4e20
4 E01S53
(-10",-804")
E06-W05
(11)
0.1 1.7 3.1e19

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-Jul-2025 23:30 UT .