31 August 2013
⇐20130830 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20130901⇒

NOAA
4 Active Regions
11834
11835
11836
11828

Flare Forecast
Flare Forecast
MM MotD

Coronal Holes


Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 E16S11
(-256",-289") 		E22-E08
(14) 		1.4 -1.9 -7.0e32
2 W06N73
(28",865") 		E33-W23
(56) 		0.5 0.7 5.5e32
3 W27N40
(332",520") 		W22-W34
(12) 		0.3 3.0 3.9e32
4 W56N35
(651",480") 		W48-W63
(15) 		0.3 1.4 4.1e32

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-2013 23:35 UT .