31 August 2015
⇐20150830 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20150901⇒

NOAA
4 Active Regions
12403
12405
12406
12407

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 W15N12
(249",79") 		W05-W22
(17) 		2.2 4.6 2.2e33
2 E42N33
(-534",447") 		E51-E35
(16) 		0.6 2.5 8.6e32
3 W08S20
(121",-431") 		W05-W10
(5) 		0.0 5.3 7.5e31

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 31-Aug-2015 23:35 UT .