28 August 2015
⇐20150827 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20150829⇒

NOAA
3 Active Regions
12403
12405
12404

Flare Forecast
Flare Forecast
MM MotD

Coronal Holes


Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 W30S44
(345",-726") 		E27-W42
(69) 		5.1 -2.2 -1.1e34
2 E28N02
(-450",-76") 		E37-E20
(17) 		1.1 3.9 1.2e33
3 W35N01
(547",-75") 		W29-W41
(12) 		0.8 -2.1 -5.8e32
4 W31N15
(469",149") 		W27-W35
(8) 		0.2 -8.6 -4.9e32
5 E25N66
(-161",820") 		E33-E15
(18) 		0.0 -0.8 -4.2e31

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 28-Aug-2015 23:35 UT .