13 August 2012
⇐20120812 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20120814⇒

NOAA
6 Active Regions
11538
11540
11542
11543
11544
11545

Flare Forecast
Flare Forecast
MM MotD

Coronal Holes


Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 E44S19
(-619",-377") 		E71-E31
(40) 		1.7 2.1 2.4e33
2 W35N18
(517",207") 		W28-W41
(13) 		0.4 -5.3 -7.1e32
3 W12N31
(165",395") 		W07-W14
(7) 		0.1 -3.0 -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-Aug-2012 23:00 UT .