27 February 2015
⇐20150226 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20150228⇒

NOAA
6 Active Regions
12289
12290
12293
12287
12291
12292

Flare Forecast
Flare Forecast
MM MotD

Coronal Holes


Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 E24S58
(-210",-757") 		E79-W74
(153) 		8.2 -2.2 -1.4e34
2 E04N21
(-61",462") 		E07-W03
(10) 		0.4 -3.1 -4.0e32

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 27-Feb-2015 22:35 UT .