26 February 2023
20230225 Week Rotation Today Rotation Week 20230227



Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 W40S06
(615",-10")
W22-W59
(37)
2.8 -0.4 -2.1e20
2 E45N09
(-673",243")
E54-E36
(18)
0.9 -0.4 -8.4e19
3 W08S77
(30",-908")
E48-W26
(74)
0.6 -0.6 -1.5e20
4 E16N39
(-213",694")
E23-E10
(13)
0.3 -1.2 -8.3e19
5 W61S50
(547",-699")
W55-W66
(11)
0.2 -1.7 -1.2e20
6 W51S75
(198",-908")
W46-W65
(19)
0.1 -1.6 -6.2e19
7 E57N04
(-810",140")
E60-E54
(6)
0.0 -0.8 -9.1e18

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 26-Feb-2023 20:30 UT .