28 January 2013
⇐20130127 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20130129⇒

NOAA
4 Active Regions
11661
11662
11663
11664

Flare Forecast
Flare Forecast
MM MotD

Coronal Holes


Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 E42S05
(-654",-11") 		E47-E36
(11) 		0.4 -3.7 -6.3e32
2 W11S16
(181",-171") 		W09-W13
(4) 		0.1 7.5 9.7e31
3 W13S14
(221",-135") 		W11-W16
(5) 		0.0 10.5 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 28-Jan-2013 22:00 UT .