26 January 2013
⇐20130125 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20130127⇒

NOAA
4 Active Regions
11660
11661
11662
11663

Flare Forecast
Flare Forecast
MM MotD

Coronal Holes


Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 W44S48
(453",-678") 		W25-W54
(29) 		1.2 -2.6 -3.0e33
2 E17S15
(-280",-160") 		E20-E12
(8) 		0.1 7.4 2.4e32
3 W08S04
(129",32") 		W05-W10
(5) 		0.1 -2.2 -3.9e31
4 W31N40
(388",689") 		W29-W35
(6) 		0.0 -2.2 -7.2e31

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 26-Jan-2013 22:00 UT .