13 March 2025
⇐20250312 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20250314⇒



Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 W42S23
(601",-289") 		W21-W61
(40) 		2.3 -8.8 -4.2e21
2 E04S33
(-51",-416") 		E19-W13
(32) 		1.7 -4.7 -1.4e21
3 W41S48
(420",-652") 		W38-W48
(10) 		0.1 -0.5 -1.1e19

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 13-Mar-2025 20:30 UT .