3 February 2023
20230202 Week Rotation Today Rotation Week 20230204



Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 E04N27
(-63",529")
E22-W19
(41)
7.2 -2.4 -3.1e21
2 W58S66
(328",-865")
W56-W72
(16)
0.7 -0.4 -1.4e20
3 E06S61
(-52",-800")
E11-W02
(13)
0.1 -1.1 -3.0e19

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 3-Feb-2023 20:30 UT .