7 December 2020
⇐20201206 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20201208⇒

NOAA
4 Active Regions
12790
12791
12787
12789

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 W11N21
(180",346") 		E24-W34
(58) 		10.3 -0.4 -7.4e20
2 E38N27
(-539",443") 		E60-E22
(38) 		6.4 0.1 1.2e20
3 W31S76
(119",-946") 		W20-W45
(25) 		0.1 -0.9 -4.5e19
4 W50N08
(739",144") 		W48-W51
(3) 		0.0 -1.2 -1.0e19

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 7-Dec-2020 20:30 UT .