16 September 2013
⇐20130915 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20130917⇒

NOAA
3 Active Regions
11841
11838
11840

Flare Forecast
Flare Forecast
MM MotD

Coronal Holes


Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 E50N36
(-589",500") 		E55-E52
(3) 		1.7 -0.3 -3.6e32
2 W26S02
(418",-136") 		W16-W33
(17) 		1.1 4.6 1.4e33
3 W73N31
(781",459") 		W61-W84
(23) 		0.2 -1.7 -1.1e33
4 W47N39
(540",540") 		W39-W54
(15) 		0.1 -2.8 -2.8e32
5 W13N16
(204",143") 		W11-W14
(3) 		0.0 14.3 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-Sep-2013 23:35 UT .