18 February 2024
20240217 Week Rotation Today Rotation Week 20240219



Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 E64S21
(-814",-302")
E70-E58
(12)
0.3 -4.0 -4.3e20
2 E43S14
(-640",-142")
E49-E36
(13)
0.2 -1.7 -8.7e19
3 E49N57
(-404",847")
E66-E34
(32)
0.2 -0.9 -9.1e19
4 W42N27
(584",519")
W40-W44
(4)
0.1 21.2 3.2e20

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 18-Feb-2024 20:30 UT .