24 August 2023
⇐20230823 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20230825⇒



Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 W24N02
(382",-67") 		W18-W29
(11) 		0.6 -2.5 -2.5e20
2 W17N52
(175",673") 		W10-W24
(14) 		0.3 -1.6 -1.2e20
3 E22N44
(-259",585") 		E27-E20
(7) 		0.2 -0.6 -2.6e19

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 24-Aug-2023 23:30 UT .