28 December 2022
20221227 Week Rotation Today Rotation Week 20221229



Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 W21N32
(298",552")
E01-W35
(36)
3.9 5.9 4.6e21
2 E15S05
(-256",-35")
E24-W01
(25)
2.1 -0.3 -1.0e20
3 E56S15
(-781",-224")
E64-E44
(20)
1.9 -0.6 -3.2e20
4 W10S71
(51",-910")
E53-W24
(77)
1.1 -0.8 -3.6e20
5 W57S50
(527",-729")
W45-W70
(25)
0.2 -0.7 -5.9e19
6 E61N38
(-675",612")
E64-E55
(9)
0.1 -1.5 -3.6e19
7 E19N02
(-314",83")
E20-E17
(3)
0.0 -3.2 -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 28-Dec-2022 20:30 UT .