31 December 2021
⇐20211230 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20220101⇒



Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 E30S00
(-496",41") 		E56-E04
(52) 		3.5 0.1 4.8e19
2 W30N08
(481",186") 		W10-W41
(31) 		2.1 0.7 2.7e20
3 E62S33
(-727",-504") 		E72-E53
(19) 		0.4 -0.9 -1.1e20

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-Dec-2021 20:30 UT .