1 September 2015
⇐20150831 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20150902⇒

NOAA
4 Active Regions
12405
12406
12407
12408

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 E38N50
(-383",660") 		E52-E19
(33) 		2.0 1.9 2.9e33
2 W29N12
(451",87") 		W19-W35
(16) 		1.8 4.6 2.4e33
3 W22S21
(330",-444") 		W21-W23
(2) 		0.0 7.1 9.2e31

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 1-Sep-2015 23:35 UT .