27 August 2016
⇐20160826 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20160828⇒

NOAA
4 Active Regions
12579
12580
12581
12578

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 E54N44
(-558",600") 		E68-E39
(29) 		5.5 1.2 7.3e33
2 W02N03
(28",-72") 		E11-W12
(23) 		1.6 2.0 5.2e32
3 W14N77
(52",892") 		E93-W92
(185) 		1.1 0.8 2.4e33

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 27-Aug-2016 23:31 UT .