18 April 2023
⇐20230417 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20230419⇒



Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 E35S51
(-350",-694") 		E71-W09
(80) 		3.5 -1.5 -1.4e21
2 E11S09
(-185",-56") 		E15-E05
(10) 		0.6 -1.9 -1.9e20

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 18-Apr-2023 23:30 UT .