5 April 2023
⇐20230404 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20230406⇒



Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 E28N12
(-442",294") 		E44-E11
(33) 		1.5 2.6 7.2e20
2 W39S66
(246",-836") 		W37-W43
(6) 		0.0 0.3 5.3e18
3 E30S05
(-478",4") 		E32-E28
(4) 		0.0 -2.8 -1.8e19

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 5-Apr-2023 23:30 UT .