18 September 2016
⇐20160917 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20160919⇒

NOAA
2 Active Regions
12592
12591

Flare Forecast
Flare Prediction System
MM MotD

Coronal Holes


Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 W16S25
(240",-501") 		E18-W40
(58) 		8.6 -0.6 -1.9e33
2 E38N71
(-195",865") 		E77-W69
(146) 		1.9 0.6 2.5e33
3 W04S62
(28",-895") 		E54-W47
(101) 		1.6 -0.9 -3.6e33
4 E29S32
(-387",-594") 		E37-E18
(19) 		0.8 -0.5 -2.4e32

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-2016 20:30 UT .