5 February 2023
⇐20230204 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20230206⇒



Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 W29N12
(460",295") 		W00-W42
(42) 		3.9 -2.6 -1.9e21
2 W21N42
(263",721") 		W05-W28
(23) 		1.1 -6.1 -1.6e21

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 5-Feb-2023 20:30 UT .