4 December 2016
⇐20161203 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20161205⇒

NOAA
4 Active Regions
12612
12614
12615
12616

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 E41S43
(-466",-669") 		E70-W44
(114) 		13.1 -1.2 -1.5e34
2 W09N64
(64",869") 		E65-W72
(137) 		3.5 0.7 3.7e33

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 4-Dec-2016 20:30 UT .