27 January 2013
⇐20130126 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20130128⇒

NOAA
5 Active Regions
11660
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 W58S46
(568",-668") 		W47-W68
(21) 		0.5 -2.4 -1.8e33
2 E03S15
(-56",-156") 		E06-W02
(8) 		0.2 10.0 3.6e32
3 E55S03
(-798",2") 		E59-E50
(9) 		0.1 -3.9 -4.1e32

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 27-Jan-2013 22:00 UT .