3 May 2023
20230502 Week Rotation Today Rotation Week 20230504



Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 W04S43
(48",-601")
E43-W37
(80)
5.8 2.2 2.4e21
2 E09N08
(-148",195")
E19-W06
(25)
1.5 2.3 5.6e20
3 W24S04
(382",-9")
W23-W25
(2)
0.0 -1.9 -1.3e19
4 W08S69
(49",-866")
W02-W16
(14)
0.0 -2.8 -4.1e19

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 3-May-2023 23:30 UT .