24 January 2025
20250123 Week Rotation Today Rotation Week 20250125



Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 E25S66
(-164",-855")
E49-W51
(100)
2.5 0.3 3.0e20
2 E61N16
(-818",306")
E80-E46
(34)
1.3 0.9 4.1e20
3 E58S31
(-710",-465")
E83-E43
(40)
0.5 4.4 7.1e20
4 W14S45
(160",-630")
W04-W18
(14)
0.4 1.2 1.0e20
5 W24S44
(291",-609")
W18-W32
(14)
0.3 0.6 4.2e19
6 W11N14
(175",326")
W09-W12
(3)
0.0 -25.5 -1.9e20

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-Jan-2025 20:30 UT .