19 August 2023
⇐20230818 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20230820⇒



Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 E46N53
(-409",708") 		E53-E36
(17) 		0.2 -1.3 -7.3e19
2 E07S23
(-103",-467") 		E11-E03
(8) 		0.1 7.8 2.0e20
3 W24N42
(283",551") 		W19-W27
(8) 		0.0 -2.9 -2.4e19

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 19-Aug-2023 23:30 UT .