25 July 2023
⇐20230724 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20230726⇒



Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 W23S20
(345",-397") 		W18-W25
(7) 		0.2 5.8 2.2e20
2 W25S05
(394",-166") 		W22-W27
(5) 		0.2 2.6 7.2e19
3 E18S45
(-201",-730") 		E22-E12
(10) 		0.1 4.2 8.0e19
4 W11S60
(90",-861") 		W08-W14
(6) 		0.0 2.4 3.4e19

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 25-Jul-2023 23:30 UT .