30 January 2013
⇐20130129 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20130131⇒

NOAA
5 Active Regions
11662
11663
11664
11665
11666

Flare Forecast
Flare Forecast
MM MotD

Coronal Holes


Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 E50N27
(-663",498") 		E78-E41
(37) 		1.1 -2.7 -3.0e33
2 E14S05
(-242",16") 		E22-E07
(15) 		0.9 -4.7 -8.9e32
3 E41N07
(-639",193") 		E45-E35
(10) 		0.2 -5.5 -5.0e32

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 30-Jan-2013 22:00 UT .