12 September 2021
20210911 Week Rotation Today Rotation Week 20210913



Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 E18S10
(-298",-277")
E47-W19
(66)
8.6 -0.1 -8.1e19
2 W17N66
(117",816")
E90-W85
(175)
4.1 0.9 1.1e21
3 E14N30
(-196",369")
E19-E05
(14)
0.6 -1.4 -1.4e20
4 E35N23
(-500",272")
E36-E33
(3)
0.0 -1.3 -1.2e19
5 E43S32
(-546",-582")
E44-E41
(3)
0.0 -0.9 -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 12-Sep-2021 23:30 UT .