16 March 2025
20250315 Week Rotation Today Rotation Week 20250317



Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 W47S35
(582",-484")
W31-W66
(35)
0.7 -3.2 -5.5e20
2 E38N01
(-591",120")
E44-E30
(14)
0.4 -3.8 -3.2e20
3 W12N35
(169",646")
W09-W16
(7)
0.1 7.2 1.4e20
4 E10S59
(-91",-759")
E13-E07
(6)
0.0 -0.5 -4.8e18

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 16-Mar-2025 20:30 UT .