12 May 2025
20250511 Week Rotation Today Rotation Week 20250513



Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 E55S30
(-672",-453")
E79-E33
(46)
3.1 3.0 2.7e21
2 W64S37
(687",-551")
W48-W84
(36)
0.7 -1.6 -4.6e20
3 W16S11
(252",-136")
W10-W21
(11)
0.4 -11.9 -7.6e20
4 W50N25
(666",427")
W47-W55
(8)
0.0 4.7 6.1e19

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 12-May-2025 23:30 UT .