5 April 2012
⇐20120404 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20120406⇒

NOAA
4 Active Regions
11445
11450
11452
11453

Flare Forecast
Flare Forecast
MM MotD

Coronal Holes


Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 W06S68
(39",-846") 		E73-W24
(97) 		2.3 1.0 3.0e33
2 E61S32
(-714",-456") 		E64-E52
(12) 		0.2 -1.9 -4.3e32
3 E44S56
(-369",-752") 		E49-E38
(11) 		0.1 -1.3 -1.0e32
4 W35S28
(486",-365") 		W32-W37
(5) 		0.0 27.1 5.1e32

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 5-Apr-2012 23:00 UT .