13 February 2015
⇐20150212 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20150214⇒

NOAA
4 Active Regions
12280
12282
12283
12281

Flare Forecast
Flare Forecast
MM MotD

Coronal Holes


Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 W22S03
(361",63") 		W05-W37
(32) 		3.6 -4.7 -4.1e33
2 E51N33
(-637",586") 		E71-E48
(23) 		1.6 2.3 5.1e33
3 E60S60
(-418",-811") 		E73-E73
(2.3e05) 		-0.6 5.8 1.3e34

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 13-Feb-2015 22:35 UT .