4 January 2012
⇐20120103 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20120105⇒

NOAA
6 Active Regions
11386
11388
11389
11390
11391
11392

Flare Forecast
Flare Forecast
MM MotD

Coronal Holes


Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 E11S06
(-181",-40") 		E20-W03
(23) 		2.3 -6.2 -2.6e33
2 W59S55
(488",-777") 		W61-W67
(6) 		1.0 0.5 1.3e33
3 E39S08
(-612",-91") 		E45-E33
(12) 		0.3 -0.8 -1.2e32
4 W09N32
(128",561") 		W07-W10
(3) 		0.0 -15.2 -2.7e32

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 4-Jan-2012 22:00 UT .