8 January 2025
20250107 Week Rotation Today Rotation Week 20250109



Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 E31S01
(-511",39")
E39-E26
(13)
0.6 -3.8 -4.2e20
2 W37N27
(521",491")
W33-W41
(8)
0.1 4.5 9.1e19
3 E32N11
(-511",243")
E34-E30
(4)
0.1 -9.4 -1.0e20
4 W30N27
(438",497")
W28-W32
(4)
0.0 2.1 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 8-Jan-2025 20:30 UT .