29 January 2022
20220128 Week Rotation Today Rotation Week 20220130



Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 W21S05
(344",11")
E09-W39
(48)
5.3 -0.2 -1.3e20
2 E41S08
(-638",-63")
E64-E10
(54)
4.2 0.1 4.6e19
3 W49N02
(732",103")
W46-W52
(6)
0.1 -0.5 -1.1e19

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 29-Jan-2022 20:30 UT .