19 March 2018
⇐20180318 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20180320⇒

NOAA
2 Active Regions
12702
12701

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 E08S31
(-121",-394") 		E40-W38
(78) 		30.3 -0.3 -2.3e33
2 E41N01
(-635",109") 		E44-E39
(5) 		0.0 -1.1 -2.1e31

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-Mar-2018 20:34 UT .