22 January 2013
⇐20130121 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20130123⇒

NOAA
4 Active Regions
11654
11658
11660
11661

Flare Forecast
Flare Forecast
MM MotD

Coronal Holes


Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 E13S41
(-169",-567") 		E38-W14
(52) 		4.1 -4.0 -6.2e33
2 E20N37
(-260",654") 		E27-E07
(20) 		0.5 -0.5 -1.2e32
3 W49S41
(553",-594") 		W42-W57
(15) 		0.2 -5.6 -8.2e32

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 22-Jan-2013 22:00 UT .