3 August 2025
20250802 Week Rotation Today Rotation Week 20250804



Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 E47S25
(-624",-457")
E79-E20
(59)
3.1 3.5 2.9e21
2 E55N13
(-758",163")
E68-E46
(22)
0.4 5.9 6.5e20
3 W38N15
(564",161")
W34-W41
(7)
0.3 -5.1 -2.6e20
4 W35N80
(98",910")
W01-W89
(88)
0.2 -0.6 -9.2e19
5 W43N59
(330",772")
W39-W49
(10)
0.1 -0.7 -1.6e19

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 3-Aug-2025 23:30 UT .