25 February 2015
⇐20150224 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20150226⇒

NOAA
5 Active Regions
12287
12289
12290
12292
12291

Flare Forecast
Flare Forecast
MM MotD

Coronal Holes


Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 E48S58
(-382",-771") 		E60-W89
(149) 		5.8 -1.9 -1.5e34
2 E30N23
(-446",470") 		E34-E25
(9) 		0.2 -4.4 -5.1e32
3 W29N06
(475",213") 		W25-W34
(9) 		0.2 6.5 5.3e32

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 25-Feb-2015 22:35 UT .