21 June 2023
20230620 Week Rotation Today Rotation Week 20230622



Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 E25N43
(-298",621")
E39-E14
(25)
0.7 -2.7 -4.3e20
2 W57S35
(648",-551")
W51-W61
(10)
0.2 -2.5 -1.7e20
3 E26N02
(-411",2")
E30-E21
(9)
0.2 -0.9 -2.7e19
4 W12S08
(198",-163")
W10-W14
(4)
0.1 -3.7 -5.9e19

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 21-Jun-2023 23:30 UT .