21 October 2022
20221020 Week Rotation Today Rotation Week 20221022



Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 E14S43
(-168",-717")
E59-W29
(88)
9.2 -2.0 -4.4e21
2 E48N22
(-665",309")
E55-E39
(16)
0.7 1.9 3.2e20
3 W30S13
(477",-299")
W29-W33
(4)
0.1 -3.5 -6.7e19

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-Oct-2022 22:08 UT .