7 February 2022
20220206 Week Rotation Today Rotation Week 20220208



Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 E41S21
(-597",-268")
E48-E34
(14)
1.4 -3.8 -1.1e21
2 W22N55
(209",847")
W11-W30
(19)
0.6 0.3 5.4e19
3 E66S51
(-563",-721")
E71-E70
(1)
0.3 -0.9 -1.3e20
4 W57S30
(709",-425")
W53-W62
(9)
0.1 -4.0 -8.4e19

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 7-Feb-2022 20:30 UT .