23 April 2023
20230422 Week Rotation Today Rotation Week 20230424



Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 E20S07
(-322",-31")
E45-W09
(54)
5.7 -2.3 -2.1e21
2 W41S58
(335",-773")
E69-W63
(132)
3.4 -1.0 -1.0e21
3 E36S50
(-360",-687")
E46-E26
(20)
0.2 -0.5 -3.1e19
4 E60N30
(-712",514")
E64-E52
(12)
0.2 -3.2 -2.5e20
5 E21N18
(-330",370")
E23-E20
(3)
0.0 -3.7 -3.2e19

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 23-Apr-2023 23:30 UT .