5 May 2023
⇐20230504 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20230506⇒



Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 W31S43
(363",-613") 		E32-W61
(93) 		5.2 2.1 2.5e21
2 W25N09
(391",197") 		W15-W33
(18) 		1.5 1.1 2.7e20
3 E33N24
(-466",441") 		E43-E23
(20) 		0.6 5.4 7.1e20

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 5-May-2023 23:30 UT .