23 February 2013
⇐20130222 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20130224⇒

NOAA
6 Active Regions
11671
11673
11675
11676
11678
11679

Flare Forecast
Flare Forecast
MM MotD

Coronal Holes


Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 E03S53
(-26",-703") 		E34-W27
(61) 		1.7 -3.3 -3.2e33
2 E56N04
(-801",129") 		E65-E51
(14) 		0.4 1.2 3.9e32
3 W45N31
(590",565") 		W40-W52
(12) 		0.2 -3.4 -6.0e32

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 23-Feb-2013 22:00 UT .