22 October 2023
⇐20231021 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20231023⇒



Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 W43N48
(437",673") 		W24-W49
(25) 		0.5 -2.8 -4.0e20
2 E66N37
(-706",543") 		E75-E52
(23) 		0.5 2.6 5.2e20
3 E65N09
(-866",109") 		E69-E60
(9) 		0.4 2.0 3.0e20

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 22-Oct-2023 23:30 UT .