30 April 2014
⇐20140429 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20140501⇒

NOAA
6 Active Regions
12045
12047
12048
12049
12050
12044

Flare Forecast
Flare Forecast
MM MotD

Coronal Holes


Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 W01S61
(12",-799") 		E23-W18
(41) 		0.9 -0.3 -2.6e32
2 W28S51
(286",-695") 		W18-W35
(17) 		0.3 0.4 9.3e31

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-Apr-2014 23:35 UT .