25 February 2023
20230224 Week Rotation Today Rotation Week 20230226



Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 W25S04
(407",42")
W07-W43
(36)
5.2 -0.8 -6.5e20
2 E03S72
(-13",-878")
E33-W81
(114)
1.9 -0.6 -4.0e20
3 W53S50
(503",-687")
W37-W81
(44)
1.3 -2.1 -8.8e20
4 E60N13
(-822",268")
E65-E52
(13)
0.5 -0.4 -7.1e19
5 W29N48
(315",786")
W22-W34
(12)
0.3 1.0 1.0e20

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 25-Feb-2023 20:30 UT .