14 May 2025
⇐20250513 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20250515⇒



Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 E40S33
(-516",-492") 		E75-E04
(71) 		8.2 3.5 6.6e21
2 W44S10
(645",-133") 		W38-W47
(9) 		0.1 -8.6 -1.5e20
3 W10N24
(154",427") 		W08-W13
(5) 		0.1 -14.6 -1.9e20
4 E14N04
(-227",107") 		E16-E12
(4) 		0.1 3.4 2.9e19

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 14-May-2025 23:30 UT .