20 June 2025
20250619 Week Rotation Today Rotation Week 20250621



Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 W42S44
(459",-668")
E15-W79
(94)
8.5 1.7 4.2e21
2 E48N14
(-678",205")
E68-E22
(46)
4.1 -2.4 -2.3e21
3 E08N01
(-128",-6")
E11-E05
(6)
0.3 -5.9 -2.5e20
4 E20S02
(-331",-52")
E23-E16
(7)
0.1 -0.9 -1.5e19
5 E25S30
(-345",-501")
E29-E20
(9)
0.0 3.6 3.5e19

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 20-Jun-2025 07:30 UT .