30 December 2012
⇐20121229 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20121231⇒

NOAA
5 Active Regions
11635
11637
11638
11639
11640

Flare Forecast
Flare Forecast
MM MotD

Coronal Holes


Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 E03N51
(-27",793") 		E25-W24
(49) 		2.0 -0.0 -4.9e31
2 W04S07
(62",-70") 		W02-W05
(3) 		0.0 -1.9 -1.6e31

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-2012 22:00 UT .