26 May 2023
20230525 Week Rotation Today Rotation Week 20230527



Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 W15N37
(200",594")
E05-W26
(31)
1.7 -4.0 -1.4e21
2 E49S40
(-553",-597")
E67-E31
(36)
1.2 3.5 1.3e21
3 W71S20
(841",-323")
W62-W78
(16)
0.2 -1.3 -1.2e20
4 W16N15
(252",267")
W15-W18
(3)
0.1 -3.1 -2.9e19

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 26-May-2023 23:30 UT .