18 March 2025
20250317 Week Rotation Today Rotation Week 20250319



Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 E64S40
(-663",-579")
E79-E68
(11)
1.6 1.0 6.2e20
2 E11N01
(-178",139")
E17-W00
(17)
1.0 -4.3 -6.4e20
3 E14N18
(-230",402")
E19-E11
(8)
0.2 -7.7 -2.2e20
4 W14S49
(153",-648")
W10-W18
(8)
0.1 -0.5 -1.3e19
5 W76S35
(766",-528")
W69-W85
(16)
0.0 -1.4 -3.6e19
6 E75S03
(-931",-12")
E80-E71
(9)
0.0 2.2 5.6e19

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 18-Mar-2025 20:30 UT .