24 July 2023
20230723 Week Rotation Today Rotation Week 20230725



Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 E30S44
(-347",-702")
E43-E19
(24)
0.4 3.2 3.1e20
2 W08S22
(115",-435")
W01-W11
(10)
0.2 4.4 1.8e20
3 E29N47
(-309",644")
E34-E27
(7)
0.1 -1.2 -3.5e19
4 E29N73
(-137",876")
E45-E22
(23)
0.1 -0.5 -1.4e19

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 24-Jul-2023 23:30 UT .