20 July 2024
20240719 Week Rotation Today Rotation Week 20240721



Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 W32S59
(258",-845")
E19-W58
(77)
1.9 0.6 4.8e20
2 W63N37
(669",541")
W59-W77
(18)
0.9 -3.5 -1.2e21
3 E29N12
(-443",129")
E30-E25
(5)
0.1 6.8 6.8e19
4 E22N41
(-267",557")
E27-E18
(9)
0.1 -1.6 -1.8e19

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 20-Jul-2024 23:30 UT .