11 February 2013
⇐20130210 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20130212⇒

NOAA
5 Active Regions
11665
11667
11670
11671
11672

Flare Forecast
Flare Forecast
MM MotD

Coronal Holes


Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 E13N31
(-181",598") 		E23-W04
(27) 		1.9 3.9 3.1e33
2 W21S76
(87",-909") 		E47-W58
(105) 		0.9 1.0 2.3e33
3 W61S42
(629",-608") 		W45-W66
(21) 		0.4 1.5 1.0e33
4 W15S55
(148",-729") 		W11-W19
(8) 		0.1 -1.7 -1.1e32

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 11-Feb-2013 22:00 UT .