22 December 2016
⇐20161221 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20161223⇒

NOAA
2 Active Regions
12620
12619

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 W24S19
(382",-284") 		E18-W45
(63) 		7.2 1.5 3.1e33
2 W21N51
(219",777") 		E51-W64
(115) 		6.3 0.6 3.5e33
3 E06S79
(-19",-950") 		E26-W14
(40) 		0.1 -1.3 -5.6e32

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 22-Dec-2016 20:30 UT .