21 August 2024
20240820 Week Rotation Today Rotation Week 20240822



Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 W22N31
(301",401")
W15-W28
(13)
0.5 4.8 4.0e20
2 W52N68
(283",847")
W35-W74
(39)
0.2 -0.5 -4.6e19
3 E30N41
(-361",538")
E32-E26
(6)
0.1 5.5 6.6e19
4 W47N14
(675",160")
W46-W49
(3)
0.1 22.8 2.7e20

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-Aug-2024 23:30 UT .