20 January 2013
⇐20130119 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20130121⇒

NOAA
3 Active Regions
11654
11658
11660

Flare Forecast
Flare Forecast
MM MotD

Coronal Holes


Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 E39S45
(-439",-637") 		E45-E20
(25) 		2.0 -3.0 -4.5e33
2 W10S04
(162",11") 		W07-W12
(5) 		0.2 -1.1 -4.2e31
3 E26S16
(-416",-189") 		E29-E22
(7) 		0.2 -0.9 -4.4e31
4 E24S24
(-361",-324") 		E28-E20
(8) 		0.1 -0.9 -4.0e31
5 E07S46
(-83",-640") 		E10-E03
(7) 		0.1 -5.5 -2.0e32

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-2013 22:00 UT .