19 July 2023
⇐20230718 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20230720⇒



Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 W24S11
(372",-257") 		W19-W29
(10) 		0.6 -2.6 -2.6e20
2 E16N42
(-194",579") 		E26-E06
(20) 		0.3 -2.4 -1.6e20

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 19-Jul-2023 23:30 UT .