13 September 2018
⇐20180912 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20180914⇒

NOAA
2 Active Regions
12722
12721

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 E19S21
(-285",-441") 		E43-W13
(56) 		8.1 -1.0 -2.9e21
2 W33N61
(256",780") 		E93-W55
(148) 		5.4 0.9 5.5e21
3 E14N21
(-213",231") 		E16-E12
(4) 		0.1 -1.0 -1.8e19

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 13-Sep-2018 23:10 UT .