7 December 2013
20131206 Week Rotation Today Rotation Week 20131208

NOAA
7 Active Regions

Flare Forecast

Coronal Holes


Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 W43N12
(652",208")
W25-W56
(31)
1.9 1.4 1.3e33
2 E64N27
(-778",442")
E73-E50
(23)
0.4 -3.5 -2.6e33
3 W15S61
(123",-856")
W01-W19
(18)
0.3 -0.4 -1.6e32

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 7-Dec-2013 20:35 UT .