8 September 2021
20210907 Week Rotation Today Rotation Week 20210909



Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 E09N69
(-52",843")
E63-W66
(129)
3.7 0.9 1.1e21
2 W27S45
(300",-749")
W06-W40
(34)
1.7 -1.4 -6.6e20
3 W22S01
(364",-131")
W03-W31
(28)
1.5 0.2 4.6e19
4 E12N24
(-183",271")
E16-E04
(12)
0.3 4.8 2.3e20
5 E24N07
(-381",7")
E25-E22
(3)
0.0 1.4 1.0e19

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 8-Sep-2021 11:30 UT .