6 March 2023
20230305 Week Rotation Today Rotation Week 20230307



Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 W57N05
(808",148")
W45-W72
(27)
1.7 -0.3 -1.6e20
2 W42N30
(567",558")
W37-W48
(11)
0.2 -7.0 -2.9e20
3 W49N25
(664",480")
W44-W55
(11)
0.1 -10.2 -3.8e20
4 W28S13
(443",-119")
W26-W30
(4)
0.0 -1.6 -1.1e19

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 6-Mar-2023 20:30 UT .