25 December 2021
⇐20211224 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20211226⇒



Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 W22N49
(243",760") 		E58-W37
(95) 		7.9 0.6 1.4e21
2 E14S01
(-241",15") 		E30-W10
(40) 		4.0 0.7 4.5e20
3 E50N04
(-742",97") 		E59-E41
(18) 		1.2 0.7 1.8e20

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 25-Dec-2021 20:30 UT .