12 February 2012
⇐20120211 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20120213⇒

NOAA
5 Active Regions
11416
11417
11418
11419
11420

Flare Forecast
Flare Forecast
MM MotD

Coronal Holes


Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 E32S40
(-397",-548") 		E49-W04
(53) 		1.8 -2.3 -2.1e33
2 E56S07
(-797",-54") 		E64-E49
(15) 		0.7 -1.6 -9.6e32
3 W44S04
(676",11") 		W40-W48
(8) 		0.2 -1.0 -1.1e32

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 12-Feb-2012 22:00 UT .