27 January 2023
20230126 Week Rotation Today Rotation Week 20230128



Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 W14S08
(229",-39")
E12-W28
(40)
3.4 -0.2 -9.6e19
2 E39S64
(-267",-843")
E43-E17
(26)
1.4 -0.7 -3.7e20
3 E19S16
(-309",-175")
E29-E03
(26)
1.3 -4.1 -9.1e20
4 E34N39
(-418",678")
E47-E18
(29)
0.7 -1.8 -3.4e20
5 E19N08
(-318",225")
E26-E11
(15)
0.4 -0.8 -5.9e19

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 27-Jan-2023 20:30 UT .