24 February 2023
⇐20230223 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20230225⇒



Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 W06S08
(102",-21") 		E10-W18
(28) 		4.4 -1.7 -1.2e21
2 W31S61
(243",-790") 		E42-W70
(112) 		4.1 -1.3 -1.6e21
3 W17N56
(156",861") 		W05-W21
(16) 		0.9 0.7 2.2e20
4 W50S24
(682",-317") 		W47-W54
(7) 		0.2 -1.2 -6.0e19

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 24-Feb-2023 20:30 UT .