18 February 2025
⇐20250217 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20250219⇒



Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 E51S67
(-293",-861") 		E48-E23
(25) 		0.6 0.7 1.8e20
2 W36N45
(409",747") 		W24-W49
(25) 		0.3 1.7 1.7e20

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-Feb-2025 20:30 UT .