1 September 2017
⇐20170831 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20170902⇒

NOAA
4 Active Regions
12672
12673
12674
12675

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 W32N48
(336",631") 		E89-W61
(150) 		15.2 0.7 6.6e33
2 W24S68
(147",-915") 		E14-W47
(61) 		0.4 -1.3 -3.0e33

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 1-Sep-2017 19:30 UT .