9 February 2025
20250208 Week Rotation Today Rotation Week 20250210



Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 E38S21
(-558",-272")
E66-W09
(75)
5.7 -7.3 -8.1e21
2 W33N09
(529",249")
W17-W50
(33)
4.9 -6.5 -6.1e21
3 W07N67
(47",933")
E25-W34
(59)
0.6 -0.5 -1.5e20
4 W16S15
(265",-151")
W15-W18
(3)
0.1 -7.0 -7.7e19
5 E47S45
(-510",-628")
E51-E43
(8)
0.0 -0.8 -9.3e18

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-Feb-2025 20:30 UT .