27 August 2018
⇐20180826 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20180828⇒

NOAA
2 Active Regions
12719
12720

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 W15S13
(235",-325") 		E18-W38
(56) 		11.6 -0.3 -8.7e20
2 W06N67
(38",826") 		E79-W77
(156) 		5.0 1.3 7.6e21
3 W19S67
(124",-910") 		E14-W44
(58) 		0.4 -0.3 -5.5e20
4 W29N43
(336",568") 		W23-W37
(14) 		0.3 0.7 1.2e20

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 27-Aug-2018 23:10 UT .