22 February 2025
20250221 Week Rotation Today Rotation Week 20250223



Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 E25S57
(-221",-749")
E67-W28
(95)
6.1 0.5 7.6e20
2 E40N15
(-604",345")
E53-E20
(33)
4.7 2.8 2.8e21
3 E42S30
(-557",-411")
E70-W01
(71)
3.7 5.2 4.2e21
4 E17N07
(-280",225")
E22-E11
(11)
0.5 2.6 2.2e20
5 W26N17
(413",393")
W21-W32
(11)
0.5 -12.8 -1.1e21
6 W05S43
(59",-564")
W02-W06
(4)
0.1 -2.1 -2.0e19
7 W02S37
(24",-486")
E01-W03
(4)
0.0 -2.6 -2.1e19

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 22-Feb-2025 20:30 UT .