20 September 2024
20240919 Week Rotation Today Rotation Week 20240921



Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 E15N05
(-254",-22")
E27-E03
(24)
1.4 5.2 1.1e21
2 W56N66
(328",838")
W25-W91
(66)
0.6 -0.4 -1.2e20
3 W31N33
(417",435")
W28-W35
(7)
0.2 13.8 4.1e20

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 20-Sep-2024 23:30 UT .