13 September 2017
⇐20170912 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20170914⇒

NOAA
3 Active Regions
12680
12677
12678

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 W03N52
(32",678") 		E56-W52
(108) 		14.6 1.5 1.2e34
2 W09S22
(141",-459") 		E20-W27
(47) 		3.0 -0.1 -1.0e32

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 13-Sep-2017 19:30 UT .