3 September 2015
⇐20150902 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20150904⇒

NOAA
4 Active Regions
12406
12407
12409
12405

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 E02N54
(-22",699") 		E71-W33
(104) 		5.2 1.1 3.3e33
2 W56S01
(790",-89") 		9
(2.8e04) 		3.1 11.9 3.3e33
3 W10N10
(171",40") 		W07-W13
(6) 		0.2 2.1 8.6e31

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 3-Sep-2015 18:30 UT .