4 October 2016
⇐20161003 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20161005⇒

NOAA
2 Active Regions
12598
12599

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 W29N56
(260",741") 		E53-W88
(141) 		11.6 0.9 8.5e33
2 E32S39
(-391",-673") 		E52-E17
(35) 		1.1 -1.2 -1.0e33
3 W48S21
(664",-412") 		W41-W54
(13) 		0.4 2.0 5.8e32

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 4-Oct-2016 23:32 UT .