18 September 2017
⇐20170917 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20170919⇒

NOAA
1 Active Region
12680

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 W29N63
(214",794") 		E77-W62
(139) 		5.7 1.0 6.3e33
2 E32S15
(-491",-343") 		E39-E23
(16) 		1.2 -0.5 -2.6e32
3 E34S63
(-238",-892") 		E50-W04
(54) 		0.7 -0.7 -2.2e33
4 E56S57
(-426",-834") 		E57-E58
(-1) 		0.0 -0.9 -3.8e32

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-Sep-2017 19:30 UT .