18 January 2018
⇐20180117 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20180119⇒

NOAA
1 Active Region
12696

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 W06N08
(109",221") 		E24-W36
(60) 		5.3 -1.9 -2.0e33
2 W19S73
(92",-906") 		E30-W73
(103) 		1.2 -1.2 -3.4e33
3 E39S34
(-511",-491") 		E61-E19
(42) 		0.8 -1.0 -4.2e32

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-Jan-2018 20:30 UT .