9 March 2025
20250308 Week Rotation Today Rotation Week 20250310



Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 W44N21
(629",430")
W18-W66
(48)
3.9 -4.4 -4.2e21
2 E16S21
(-241",-237")
E31-W07
(38)
3.3 -10.8 -5.8e21
3 W15N67
(100",927")
E17-W32
(49)
0.5 -0.2 -6.8e19
4 E62S32
(-720",-463")
E68-E55
(13)
0.3 -3.1 -3.4e20
5 W07S52
(73",-687")
W02-W11
(9)
0.1 1.6 5.0e19
6 E09S48
(-100",-631")
E12-E05
(7)
0.1 2.8 3.9e19
7 W02S47
(24",-622")
E01-W04
(5)
0.0 -0.7 -4.7e18

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-Mar-2025 20:30 UT .