13 April 2023
⇐20230412 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20230414⇒



Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 W33S46
(360",-632") 		W09-W51
(42) 		1.4 2.6 8.6e20
2 W20N29
(289",546") 		W16-W25
(9) 		0.4 7.5 5.4e20
3 E13N44
(-157",735") 		E19-E07
(12) 		0.2 2.0 7.6e19

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-Apr-2023 23:30 UT .