17 August 2018
⇐20180816 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20180818⇒

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 E24S23
(-360",-461") 		E53-W23
(76) 		13.6 -0.6 -3.3e21
2 W01S56
(9",-841") 		E56-W34
(90) 		1.9 -0.5 -1.2e21
3 W50N67
(284",839") 		E26-W53
(79) 		1.8 1.0 4.1e21
4 W32N20
(473",233") 		W30-W35
(5) 		0.1 -1.6 -2.7e19

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 17-Aug-2018 23:10 UT .