21 February 2015
⇐20150220 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20150222⇒

NOAA
7 Active Regions
12287
12288
12289
12290
12282
12284
12285

Flare Forecast
Flare Forecast
MM MotD

Coronal Holes


Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 W39S67
(240",-850") 		E76-W61
(137) 		2.8 -0.5 -2.6e33
2 W00S13
(7",-104") 		E11-W15
(26) 		1.7 4.5 1.3e33
3 E27N06
(-442",208") 		E31-E23
(8) 		0.2 5.6 3.8e32

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 21-Feb-2015 22:35 UT .