16 April 2012
⇐20120415 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20120417⇒

NOAA
6 Active Regions
11454
11455
11457
11458
11459
11460

Flare Forecast
Flare Forecast
MM MotD

Coronal Holes


Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 W43S10
(650",-94") 		W41-W47
(6) 		0.1 -1.5 -1.0e32
2 W03N14
(48",315") 		W01-W05
(4) 		0.1 -5.6 -1.8e32
3 E46S51
(-433",-699") 		E49-E40
(9) 		0.1 -1.0 -1.1e32

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 16-Apr-2012 23:00 UT .