31 October 2021
⇐20211030 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20211101⇒



Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 W16N59
(133",791") 		E75-W31
(106) 		5.4 0.6 9.3e20
2 W28N11
(451",123") 		W13-W42
(29) 		2.1 -0.4 -1.5e20

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 31-Oct-2021 20:30 UT .