5 February 2025
20250204 Week Rotation Today Rotation Week 20250206



Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 E23N07
(-381",215")
E41-E09
(32)
5.0 -6.0 -5.1e21
2 E58S13
(-802",-162")
E66-E52
(14)
0.1 -2.9 -1.2e20
3 E09S21
(-143",-252")
E12-E05
(7)
0.1 -2.2 -4.1e19
4 E39N68
(-231",928")
E41-E38
(3)
0.0 -0.7 -2.5e19
5 E42N19
(-613",389")
E43-E40
(3)
0.0 -1.1 -9.2e18

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 5-Feb-2025 20:30 UT .