13 February 2025
20250212 Week Rotation Today Rotation Week 20250214



Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 W27S25
(405",-312")
E14-W60
(74)
6.3 -7.2 -7.9e21
2 W03S47
(34",-628")
E09-W11
(20)
0.5 -0.8 -8.2e19
3 W24S42
(290",-571")
W20-W27
(7)
0.1 -3.8 -5.3e19
4 W28S40
(347",-541")
W26-W30
(4)
0.1 -1.8 -2.0e19
5 E15S51
(-154",-680")
E18-E12
(6)
0.0 -3.5 -3.5e19
6 W19S46
(220",-616")
W18-W21
(3)
0.0 -2.4 -2.1e19

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 13-Feb-2025 20:30 UT .