28 April 2023
⇐20230427 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20230429⇒



Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 W51S08
(735",-81") 		W28-W70
(42) 		2.8 -1.3 -8.9e20
2 W16N37
(210",631") 		E16-W33
(49) 		2.8 -4.5 -2.7e21

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 28-Apr-2023 23:30 UT .