17 February 2014
⇐20140216 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20140218⇒

NOAA
5 Active Regions
11973
11974
11976
11977
11980

Flare Forecast
Flare Forecast
MM MotD

Coronal Holes


Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 W08N39
(106",693") 		E33-W47
(80) 		6.0 0.8 2.7e33
2 W67S52
(552",-733") 		W58-W80
(22) 		0.5 -0.4 -5.6e32
3 E62N03
(-856",98") 		E77-E50
(27) 		0.5 2.2 1.4e33

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-Feb-2014 20:35 UT .