16 September 2017
⇐20170915 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20170917⇒

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 W35N57
(297",745") 		E46-W77
(123) 		8.5 1.2 9.5e33
2 E09S31
(-128",-591") 		E13-E03
(10) 		0.4 0.5 8.9e31
3 E60S17
(-795",-327") 		E64-E58
(6) 		0.1 -1.5 -1.4e32

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 16-Sep-2017 19:30 UT .