16 April 2018
⇐20180415 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20180417⇒

NOAA
1 Active Region
12704

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 E06S26
(-88",-340") 		E33-W33
(66) 		13.1 -0.5 -1.7e33
2 E38S69
(-214",-861") 		E69-W79
(148) 		2.0 -1.1 -4.5e33
3 W17N13
(273",296") 		W15-W19
(4) 		0.1 -0.9 -2.0e31

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 16-Apr-2018 15:30 UT .