30 May 2023
⇐20230529 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20230531⇒



Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 E11S39
(-142",-585") 		E56-W23
(79) 		4.9 3.3 3.1e21
2 E08N08
(-130",142") 		E20-W12
(32) 		1.8 1.5 4.1e20

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 30-May-2023 23:30 UT .