28 January 2024
20240127 Week Rotation Today Rotation Week 20240129



Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 W22S26
(328",-341")
W06-W35
(29)
1.9 -6.9 -2.3e21
2 W34N42
(405",711")
W10-W50
(40)
1.8 -2.2 -1.2e21
3 E59S33
(-705",-481")
E78-E38
(40)
1.2 1.8 7.0e20
4 E20S18
(-325",-207")
E23-E17
(6)
0.1 4.0 6.9e19

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 28-Jan-2024 20:30 UT .