9 August 2017
⇐20170808 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20170810⇒

NOAA
1 Active Region
12670

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 -164
(87",-380") 		9.3e04
(3.6) 		5.3 -8.4 -7.8e33
2 -843
(-731",436") 		1.1e05
(0.7) 		9.7 -5.9 -6.7e33

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 9-Aug-2017 23:30 UT .