30 June 2025
20250629 Week Rotation Today Rotation Week 20250701



Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 E29S34
(-379",-562")
E62-W18
(80)
7.0 -2.7 -4.0e21
2 W28N44
(324",627")
37
(5.1e04)
-0.2 3.7 1.9e21
3 E16N50
(-168",693")
E32-W02
(34)
1.6 -0.3 -1.3e20
4 E51S15
(-715",-265")
E56-E47
(9)
0.1 -1.6 -2.5e19
5 W33N61
(252",805")
W28-W38
(10)
0.1 -0.4 -7.1e18
6 W26S23
(378",-405")
W23-W28
(5)
0.0 -11.2 -9.3e19

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 30-Jun-2025 23:30 UT .