13 February 2013
⇐20130212 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20130214⇒

NOAA
4 Active Regions
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 W21N33
(295",612") 		W06-W29
(23) 		1.3 2.8 1.8e33
2 W45S75
(182",-909") 		W11-W85
(74) 		0.6 1.1 2.3e33
3 E54S43
(-574",-608") 		E74-E41
(33) 		0.2 -2.7 -6.8e32
4 W08S13
(124",-114") 		W06-W09
(3) 		0.0 12.2 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 13-Feb-2013 22:00 UT .