9 February 2013
⇐20130208 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20130210⇒

NOAA
4 Active Regions
11665
11667
11669
11670

Flare Forecast
Flare Forecast
MM MotD

Coronal Holes


Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 W32S40
(393",-555") 		W10-W54
(44) 		2.3 2.2 2.6e33
2 -277
(-906",W00S75") 		89
(2.9e05) 		1.0 7.3 2.1e34
3 E21S48
(-239",-649") 		E42-E08
(34) 		0.7 1.9 7.3e32
4 E36N32
(-489",592") 		E45-E28
(17) 		0.5 2.5 1.0e33

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 9-Feb-2013 22:00 UT .