19 February 2013
⇐20130218 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20130220⇒

NOAA
7 Active Regions
11671
11673
11675
11676
11677
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 W32S43
(378",-590") 		W04-W43
(39) 		1.5 -3.4 -2.9e33
2 E07N35
(-91",655") 		E13-W07
(20) 		1.1 -3.7 -1.9e33
3 E50S51
(-467",-704") 		E76-E26
(50) 		0.9 -2.6 -2.9e33
4 E11S47
(-124",-625") 		E15-E07
(8) 		0.1 -3.3 -1.3e32
5 W03S25
(47",-302") 		W01-W04
(3) 		0.1 -6.0 -7.9e31

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 19-Feb-2013 22:00 UT .