16 June 2025
20250615 Week Rotation Today Rotation Week 20250617



Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 W03S39
(39",-610")
E50-W67
(117)
15.5 2.3 7.1e21
2 W27N23
(389",355")
W21-W32
(11)
0.5 3.4 3.4e20
3 W24N39
(303",577")
W19-W34
(15)
0.4 1.2 1.1e20

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 16-Jun-2025 15:30 UT .