25 September 2016
⇐20160924 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20160926⇒

NOAA
4 Active Regions
12593
12596
12597
12592

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 E34N51
(-340",675") 		E86-W60
(146) 		15.8 1.4 1.6e34
2 E42S08
(-633",-220") 		E68-E18
(50) 		3.5 1.1 1.9e33

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-2016 20:30 UT .