18 February 2022
20220217 Week Rotation Today Rotation Week 20220219



Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 W19S64
(138",-816")
E68-W30
(98)
3.7 -1.3 -1.4e21
2 W10N12
(164",313")
E08-W24
(32)
3.3 1.2 6.6e20
3 E34S10
(-532",-66")
E41-E28
(13)
0.4 2.3 1.8e20
4 E40S52
(-384",-705")
E49-E35
(14)
0.1 -0.6 -9.4e18

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 18-Feb-2022 20:30 UT .