6 September 2023
20230905 Week Rotation Today Rotation Week 20230907



Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 E44N38
(-526",508")
E61-E23
(38)
0.8 4.3 7.8e20
2 E44S21
(-613",-422")
E48-E41
(7)
0.2 -7.9 -4.1e20
3 W12S14
(199",-343")
W09-W15
(6)
0.1 -10.7 -2.5e20
4 E22N52
(-219",680")
E28-E14
(14)
0.1 -0.7 -1.7e19
5 W31N39
(384",520")
W29-W33
(4)
0.0 -2.6 -2.6e19

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 6-Sep-2023 23:30 UT .