9 January 2025
20250108 Week Rotation Today Rotation Week 20250110



Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 E17S00
(-286",63")
E25-E11
(14)
0.8 -3.7 -4.8e20
2 E60S10
(-829",-143")
E68-E52
(16)
0.3 -2.6 -2.2e20
3 E27S11
(-440",-132")
E31-E24
(7)
0.1 -13.1 -2.6e20
4 E18N12
(-303",261")
E21-E16
(5)
0.1 -5.7 -1.0e20

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 9-Jan-2025 20:30 UT .