22 February 2023
⇐20230221 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20230223⇒



Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 E23S02
(-381",82") 		E36-E03
(33) 		5.8 -1.1 -1.0e21
2 W13S57
(121",-749") 		E74-W47
(121) 		4.9 -1.8 -2.2e21
3 W24S22
(372",-263") 		W16-W32
(16) 		0.5 -1.0 -8.8e19

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 22-Feb-2023 20:30 UT .