24 December 2021
20211223 Week Rotation Today Rotation Week 20211225



Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 W03N48
(34",750")
101
(2.0e05)
0.7 4.4 8.9e21
2 E25S02
(-418",4")
E42-E01
(41)
3.1 0.7 3.4e20
3 W23N10
(371",202")
W16-W30
(14)
0.7 -0.8 -1.0e20
4 E62S03
(-862",-36")
E69-E57
(12)
0.2 -0.3 -1.8e19
5 W52S72
(232",-922")
W55-W64
(9)
0.1 -0.9 -8.7e19

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 24-Dec-2021 20:30 UT .