24 February 2013
⇐20130223 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20130225⇒

NOAA
4 Active Regions
11673
11675
11676
11678

Flare Forecast
Flare Forecast
MM MotD

Coronal Holes


Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 W04S55
(34",-715") 		E46-W39
(85) 		2.0 -2.6 -3.0e33
2 E44N04
(-668",160") 		E62-E34
(28) 		1.6 0.1 4.3e31

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 .