26 December 2011
⇐20111225 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20111227⇒

NOAA
7 Active Regions
11380
11381
11383
11384
11385
11386
11387

Flare Forecast
Flare Forecast
MM MotD

Coronal Holes


Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 E35S49
(-370",-711") 		E66-W30
(96) 		11.6 0.8 8.3e33
2 W23S01
(382",26") 		W18-W27
(9) 		0.2 -11.1 -4.4e32
3 E16S20
(-260",-306") 		E18-E15
(3) 		0.0 -1.8 -2.3e31

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 26-Dec-2011 22:00 UT .