26 December 2012
⇐20121225 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20121227⇒

NOAA
4 Active Regions
11633
11635
11636
11637

Flare Forecast
Flare Forecast
MM MotD

Coronal Holes


Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 W41N04
(634",98") 		W34-W47
(13) 		1.0 -0.9 -4.0e32
2 W14S48
(158",-698") 		E02-W28
(30) 		1.0 -2.8 -1.6e33
3 E35N42
(-418",681") 		E45-E34
(11) 		1.0 0.4 3.1e32
4 E12N50
(-135",771") 		E30-W04
(34) 		0.9 0.4 2.9e32
5 E11S51
(-118",-737") 		E17-E03
(14) 		0.2 -2.3 -2.9e32
6 E13N03
(-214",97") 		E16-E08
(8) 		0.2 -1.3 -3.9e31

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-2012 22:00 UT .