21 April 2024
20240420 Week Rotation Today Rotation Week 20240422



Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 E15S10
(-248",-79")
E27-E02
(25)
1.5 4.8 1.1e21
2 E47S34
(-584",-484")
E59-E35
(24)
1.4 4.7 1.6e21
3 E12N51
(-120",794")
E19-W05
(24)
0.4 -1.3 -1.5e20
4 W08S61
(61",-793")
W04-W10
(6)
0.0 1.9 1.8e19

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 21-Apr-2024 23:30 UT .