23 September 2021
⇐20210922 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20210924⇒



Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 E24N59
(-204",757") 		E76-W64
(140) 		7.2 0.8 1.6e21
2 W34S10
(522",-259") 		W16-W51
(35) 		5.1 -0.6 -6.3e20
3 E49N02
(-718",-49") 		E51-E47
(4) 		0.1 -0.6 -6.8e18

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 23-Sep-2021 19:30 UT .