20 December 2016
⇐20161219 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20161221⇒

NOAA
1 Active Region
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 W22N47
(245",732") 		E67-W58
(125) 		10.7 0.6 5.0e33
2 E01S16
(-14",-247") 		E43-W39
(82) 		10.3 1.0 2.2e33
3 W08N12
(139",223") 		W04-W11
(7) 		0.4 3.1 2.6e32
4 E06N02
(-109",57") 		E08-E04
(4) 		0.1 2.6 2.3e31

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 20-Dec-2016 20:30 UT .