17 December 2020
⇐20201216 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20201218⇒

NOAA
2 Active Regions
12793
12792

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 W01N43
(14",680") 		E63-W57
(120) 		14.3 0.6 1.8e21
2 E38N11
(-589",203") 		E57-E21
(36) 		2.6 -0.0 -1.6e19
3 W17S66
(118",-884") 		E64-W47
(111) 		2.4 -1.2 -1.0e21
4 W08N10
(129",189") 		W03-W11
(8) 		0.1 -1.2 -2.7e19
5 E47S05
(-717",-66") 		E51-E44
(7) 		0.0 0.5 5.2e18

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 17-Dec-2020 20:30 UT .