14 April 2025
20250413 Week Rotation Today Rotation Week 20250415



Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 E55S38
(-618",-540")
E79-E25
(54)
3.3 1.7 1.7e21
2 W60S34
(685",-498")
W47-W84
(37)
0.9 -2.3 -6.4e20
3 W07S08
(122",-42")
E00-W11
(11)
0.4 -7.4 -4.7e20

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 14-Apr-2025 23:30 UT .