21 April 2016
⇐20160420 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20160422⇒

NOAA
3 Active Regions
12532
12533
12531

Flare Forecast
Flare Prediction System
MM MotD

Coronal Holes


Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 E10N31
(-144",569") 		E52-W25
(77) 		9.1 2.4 8.7e33
2 W45S66
(276",-844") 		W60-W84
(24) 		1.0 -1.2 -2.6e33

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 21-Apr-2016 23:43 UT .