12 May 2023
20230511 Week Rotation Today Rotation Week 20230513



Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 E11N45
(-131",706")
E31-W11
(42)
0.9 2.8 6.1e20
2 W25S43
(292",-615")
W17-W33
(16)
0.5 2.6 2.6e20
3 W37N31
(496",523")
W31-W45
(14)
0.3 8.0 5.3e20
4 W26N36
(337",590")
W21-W31
(10)
0.2 4.5 2.1e20
5 W26S08
(411",-96")
W24-W28
(4)
0.1 6.2 1.2e20
6 W07N49
(73",745")
W03-W09
(6)
0.1 -1.3 -1.9e19
7 W13N37
(166",604")
W11-W15
(4)
0.0 8.1 7.7e19

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 12-May-2023 23:30 UT .