30 August 2023
⇐20230829 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20230831⇒



Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 E41S47
(-427",-752") 		E56-E25
(31) 		0.5 2.4 4.3e20
2 E18N41
(-222",534") 		E25-E12
(13) 		0.4 4.1 2.8e20
3 W50N48
(487",655") 		W43-W54
(11) 		0.1 -0.3 -9.6e18

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 30-Aug-2023 23:30 UT .