18 February 2014
⇐20140217 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20140219⇒

NOAA
6 Active Regions
11974
11976
11977
11980
11981
11982

Flare Forecast
Flare Forecast
MM MotD

Coronal Holes


Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 W29N38
(364",681") 		E21-W54
(75) 		5.1 0.9 3.6e33
2 E49N03
(-730",133") 		E66-E34
(32) 		1.1 2.2 1.5e33
3 W59S60
(422",-802") 		W50-W75
(25) 		0.1 -0.7 -2.1e32

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 18-Feb-2014 20:35 UT .