18 May 2016
⇐20160517 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20160519⇒

NOAA
2 Active Regions
12544
12546

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 W12N42
(144",664") 		E42-W58
(100) 		13.7 -0.3 -2.4e33
2 E08S14
(-123",-199") 		E17-W14
(31) 		1.5 1.3 3.9e32
3 E30N72
(-145",912") 		E35-E21
(14) 		0.0 -2.0 -5.8e32

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 18-May-2016 23:17 UT .