12 January 2012
⇐20120111 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20120113⇒

NOAA
4 Active Regions
11391
11393
11395
11396

Flare Forecast
Flare Forecast
MM MotD

Coronal Holes


Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 E11N10
(-179",233") 		E19-E02
(17) 		2.1 -4.9 -2.2e33
2 E25S28
(-358",-403") 		E30-E21
(9) 		0.1 -6.8 -2.3e32
3 W43S21
(620",-299") 		W40-W46
(6) 		0.1 4.7 2.4e32

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-Jan-2012 22:00 UT .