1 May 2022
20220430 Week Rotation Today Rotation Week 20220502



Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 W31S75
(129",-902")
E54-W67
(121)
0.8 -1.0 -4.2e20
2 W31S45
(342",-637")
W18-W46
(28)
0.6 -0.4 -5.8e19
3 E19S59
(-163",-778")
E26-E10
(16)
0.1 -1.8 -5.1e19

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 1-May-2022 23:30 UT .