23 May 2024
20240522 Week Rotation Today Rotation Week 20240524



Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 W36N54
(323",781")
E25-W52
(77)
4.6 -1.6 -2.5e21
2 E21S51
(-214",-726")
E43-W20
(63)
4.4 1.8 2.0e21
3 E46S26
(-610",-396")
E48-E42
(6)
0.0 -3.7 -3.3e19

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 23-May-2024 23:30 UT .