31 December 2020
⇐20201230 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20210101⇒

NOAA
2 Active Regions
12794
12795

Flare Forecast
Flare Prediction System
MM MotD

Coronal Holes


Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 W21N00
(346",51") 		W06-W33
(27) 		1.4 -0.2 -5.3e19
2 E16S16
(-253",-225") 		E21-E08
(13) 		1.2 -3.3 -6.2e20
3 W24N68
(147",922") 		E20-W60
(80) 		0.7 0.8 3.3e20
4 E45S66
(-281",-877") 		E78-E47
(31) 		0.7 -1.1 -3.5e20
5 W15N37
(208",624") 		W06-W25
(19) 		0.5 0.6 6.0e19

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-2020 20:30 UT .