18 May 2022
⇐20220517 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20220519⇒



Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 W41N05
(622",112") 		W05-W71
(66) 		4.8 0.6 5.7e20
2 W47N63
(317",856") 		W23-W75
(52) 		0.6 0.3 1.1e20

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 18-May-2022 23:30 UT .