24 January 2024
20240123 Week Rotation Today Rotation Week 20240125



Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 E30N39
(-383",673")
E55-W01
(56)
2.8 -3.2 -2.2e21
2 E31S21
(-475",-268")
E53-E09
(44)
2.5 -6.4 -3.0e21
3 E09N22
(-141",445")
E11-E07
(4)
0.0 -4.2 -3.2e19
4 W19S62
(150",-821")
W15-W25
(10)
0.0 -0.9 -1.0e19
5 W33N05
(535",156")
W32-W35
(3)
0.0 1.7 1.1e19

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 24-Jan-2024 20:30 UT .