19 November 2017
⇐20171118 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20171120⇒

NOAA
2 Active Regions
12687
12688

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 E26N63
(-196",847") 		E66-W26
(92) 		3.2 0.9 4.3e33
2 W38N15
(578",222") 		W27-W52
(25) 		2.7 1.1 1.2e33

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 19-Nov-2017 20:30 UT .