18 August 2018
⇐20180817 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20180819⇒

NOAA
1 Active Region
12718

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 E20S25
(-296",-492") 		E53-W27
(80) 		16.5 -0.5 -3.3e21
2 W08S54
(73",-829") 		E35-W40
(75) 		2.2 -0.2 -6.5e20
3 W50N69
(256",855") 		E23-W54
(77) 		1.4 1.1 4.3e21
4 E33S43
(-375",-715") 		E38-E29
(9) 		0.1 -1.0 -6.0e19

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-Aug-2018 23:10 UT .