20 January 2012
⇐20120119 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20120121⇒

NOAA
7 Active Regions
11399
11401
11402
11403
11405
11406
11407

Flare Forecast
Flare Forecast
MM MotD

Coronal Holes


Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 E69S37
(-730",-560") 		E74-E72
(2) 		1.0 0.7 1.8e33
2 E02S66
(-16",-853") 		E17-W12
(29) 		0.3 1.0 4.3e32
3 E59N40
(-637",663") 		E72-E49
(23) 		0.1 -0.3 -1.0e32

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 20-Jan-2012 22:00 UT .