28 December 2021
⇐20211227 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20211229⇒



Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 E18N07
(-307",154") 		E36-E00
(36) 		3.2 0.8 4.1e20
2 W40S00
(624",33") 		W27-W50
(23) 		1.4 0.6 1.5e20
3 E05N70
(-28",934") 		E52-W55
(107) 		0.6 0.7 2.5e20

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 28-Dec-2021 20:30 UT .