30 December 2011
⇐20111229 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20111231⇒

NOAA
7 Active Regions
11383
11384
11386
11387
11388
11389
11390

Flare Forecast
Flare Forecast
MM MotD

Coronal Holes


Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 W23S52
(236",-741") 		E61-W44
(105) 		10.8 0.9 7.1e33
2 W34N45
(384",722") 		W23-W46
(23) 		0.5 1.1 4.8e32
3 W08N47
(88",742") 		E06-W14
(20) 		0.4 0.7 1.6e32

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 30-Dec-2011 22:00 UT .