1 November 2021
20211031 Week Rotation Today Rotation Week 20211102



Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 W29N58
(251",786")
E67-W44
(111)
5.1 0.6 8.9e20
2 W31N27
(438",386")
W29-W31
(2)
0.1 5.0 8.9e19
3 W39N03
(613",2")
W37-W41
(4)
0.0 -1.5 -1.4e19

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 1-Nov-2021 20:30 UT .