24 April 2023
20230423 Week Rotation Today Rotation Week 20230425



Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 E02S07
(-31",-33")
E31-W28
(59)
6.6 -2.4 -2.4e21
2 W47S58
(370",-780")
E43-W66
(109)
2.6 -0.8 -6.9e20
3 E45N29
(-589",514")
E53-E34
(19)
0.5 -5.4 -7.6e20
4 E14N36
(-184",623")
E15-E12
(3)
0.1 -1.9 -3.2e19
5 E42N02
(-645",99")
E44-E41
(3)
0.1 -0.7 -1.1e19
6 W22S22
(333",-295")
W19-W24
(5)
0.1 -1.6 -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 24-Apr-2023 23:30 UT .