20 February 2024
20240219 Week Rotation Today Rotation Week 20240221



Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 E32S20
(-488",-228")
E47-E10
(37)
1.8 -5.4 -1.8e21
2 E21N46
(-244",772")
E27-E08
(19)
1.8 -2.9 -1.4e21
3 W13S57
(120",-749")
W07-W18
(11)
0.1 0.6 1.7e19

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-Feb-2024 20:30 UT .