27 December 2012
⇐20121226 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20121228⇒

NOAA
6 Active Regions
11633
11635
11636
11637
11638
11639

Flare Forecast
Flare Forecast
MM MotD

Coronal Holes


Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 E24N48
(-270",750") 		E42-W08
(50) 		1.7 0.1 1.2e32
2 W23S49
(252",-707") 		E00-W40
(40) 		1.3 -2.3 -2.0e33
3 W15N42
(190",682") 		W03-W25
(22) 		0.7 0.8 2.9e32
4 W56N02
(813",58") 		W51-W64
(13) 		0.4 -0.8 -2.9e32
5 W06N05
(97",121") 		E01-W10
(11) 		0.3 -1.3 -6.3e31

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 27-Dec-2012 22:00 UT .