22 January 2023
20230121 Week Rotation Today Rotation Week 20230123



Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 -75
(279",W17S05")
32
(4.6e04)
1.8 6.9 3.2e21
2 W12S77
(44",-926")
E31-W58
(89)
0.8 -0.8 -3.4e20
3 E21N14
(-338",322")
E26-E14
(12)
0.8 4.1 5.8e20
4 E33N40
(-407",684")
E44-E20
(24)
0.3 3.0 2.1e20
5 W52S57
(412",-789")
W42-W76
(34)
0.2 -0.4 -3.6e19

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 22-Jan-2023 20:30 UT .