27 January 2022
20220126 Week Rotation Today Rotation Week 20220128



Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 E24S03
(-390",42")
E54-W16
(70)
6.3 -0.1 -1.0e20
2 W28N07
(457",198")
W15-W38
(23)
1.7 0.3 9.9e19
3 W23N70
(130",941")
E11-W31
(42)
0.3 0.4 9.2e19

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 27-Jan-2022 20:30 UT .