25 September 2017
⇐20170924 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20170926⇒

NOAA
2 Active Regions
12681
12682

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 E03N46
(-40",603") 		E82-W34
(116) 		16.6 0.8 5.6e33
2 W18S16
(288",-375") 		W17-W20
(3) 		0.1 -0.9 -1.4e31

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 25-Sep-2017 23:30 UT .