7 April 2024
20240406 Week Rotation Today Rotation Week 20240408



Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 W17S59
(142",-765")
E07-W21
(28)
0.9 0.7 1.7e20
2 W22S20
(343",-240")
W19-W25
(6)
0.2 26.5 7.9e20
3 W42N10
(630",240")
W39-W45
(6)
0.1 3.2 5.7e19
4 E36N33
(-471",586")
E38-E34
(4)
0.1 0.4 7.3e18
5 E25S22
(-378",-268")
E27-E22
(5)
0.1 -13.4 -1.5e20

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 7-Apr-2024 23:30 UT .