21 June 2025
⇐20250620 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20250622⇒



Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 E28N14
(-435",205") 		E56-W00
(56) 		7.5 -3.7 -4.8e21
2 W51S45
(517",-682") 		W08-W80
(72) 		4.5 1.4 2.2e21
3 W15N05
(246",45") 		W12-W18
(6) 		0.3 -4.7 -2.4e20
4 W04S01
(67",-53") 		E01-W07
(8) 		0.2 -6.0 -2.0e20
5 E34N42
(-397",608") 		E38-E29
(9) 		0.1 3.0 4.5e19

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 21-Jun-2025 23:30 UT .