20 May 2024
20240519 Week Rotation Today Rotation Week 20240521



Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 E21N50
(-214",751")
E64-W14
(78)
5.6 -2.3 -3.5e21
2 E37S37
(-453",-547")
E76-E16
(60)
2.3 3.0 1.5e21

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-May-2024 23:30 UT .