1 August 2017
⇐20170731 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20170802⇒

NOAA
1 Active Region
12669

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 -553
(-156",640") 		8.1e05
(16.1) 		7.1 -5.7 -4.6e34
2 -16
(120",-909") 		1.7e05
(0.3) 		5.3 -6.5 -1.1e34

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-Aug-2017 23:30 UT .