30 September 2013
⇐20130929 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20131001⇒

NOAA
4 Active Regions
11846
11850
11854
11851

Flare Forecast
Flare Forecast
MM MotD

Coronal Holes


Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 W39N43
(446",584") 		W29-W51
(22) 		0.8 1.4 7.6e32
2 W24N03
(394",-61") 		W22-W27
(5) 		0.3 -3.9 -2.6e32
3 E35N36
(-440",485") 		E38-E31
(7) 		0.1 2.2 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 30-Sep-2013 23:35 UT .