27 January 2024
20240126 Week Rotation Today Rotation Week 20240128



Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 W24N44
(279",742")
E22-W41
(63)
2.8 -2.2 -1.6e21
2 W11S25
(166",-328")
E10-W22
(32)
2.4 -8.4 -3.3e21
3 E70S33
(-769",-499")
E85-E55
(30)
0.3 1.1 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 27-Jan-2024 20:30 UT .