17 March 2017
⇐20170316 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20170318⇒

NOAA
0 Active Regions

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 E37S16
(-562",-177") 		E54-E14
(40) 		5.4 1.2 2.5e33
2 W19N60
(162",883") 		E29-W60
(89) 		1.7 0.4 1.5e33
3 W37S23
(537",-284") 		W27-W46
(19) 		0.5 0.7 1.6e32

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 17-Mar-2017 20:30 UT .