12 February 2013
⇐20130211 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20130213⇒

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 W09N32
(129",604") 		E11-W17
(28) 		1.7 4.2 3.0e33
2 W39S75
(156",-912") 		E12-W79
(91) 		0.7 0.8 1.8e33
3 W11N49
(127",800") 		W07-W15
(8) 		0.0 -1.9 -8.7e31

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 12-Feb-2013 22:00 UT .