18 September 2013
⇐20130917 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20130919⇒

NOAA
7 Active Regions
11840
11841
11843
11844
11845
11846
11847

Flare Forecast
Flare Forecast
MM MotD

Coronal Holes


Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 E27N43
(-315",570") 		E33-E11
(22) 		4.5 -1.0 -2.1e33
2 W54N04
(777",-5") 		W50-W59
(9) 		0.2 1.7 2.4e32
3 E09S27
(-130",-532") 		E12-E06
(6) 		0.1 5.4 2.2e32
4 E08N12
(-137",85") 		E11-E06
(5) 		0.1 -3.2 -6.4e31
5 W80N34
(776",519") 		W73-W88
(15) 		0.0 -1.4 -3.6e32

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 18-Sep-2013 23:35 UT .