13 September 2013
⇐20130912 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20130914⇒

NOAA
5 Active Regions
11838
11839
11840
11841
11842

Flare Forecast
Flare Forecast
MM MotD

Coronal Holes


Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 W33N31
(448",403") 		E07-W55
(62) 		4.1 -3.5 -5.9e33
2 E15S01
(-240",-141") 		E20-E08
(12) 		0.9 6.1 1.2e33

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 13-Sep-2013 23:35 UT .