17 December 2022
20221216 Week Rotation Today Rotation Week 20221218



Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 W01N19
(19",335")
E14-W16
(30)
2.9 2.2 1.0e21
2 E04S45
(-54",-673")
E21-W21
(42)
1.4 -2.6 -8.2e20
3 E46N08
(-693",151")
E58-E32
(26)
0.8 0.6 1.1e20
4 W37S25
(526",-405")
W31-W41
(10)
0.2 -3.7 -1.9e20
5 E25N22
(-377",377")
E27-E22
(5)
0.1 9.8 1.2e20
6 W15N04
(247",82")
W13-W16
(3)
0.0 -1.5 -9.2e18

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 17-Dec-2022 20:30 UT .