20 February 2013
⇐20130219 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20130221⇒

NOAA
7 Active Regions
11671
11673
11675
11676
11677
11678
11679

Flare Forecast
Flare Forecast
MM MotD

Coronal Holes


Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 E38S52
(-374",-698") 		E56-E09
(47) 		1.2 -2.9 -2.9e33
2 W39S45
(433",-618") 		W12-W56
(44) 		0.6 -2.9 -1.3e33
3 W10N32
(139",606") 		W02-W16
(14) 		0.6 -2.5 -6.1e32

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 20-Feb-2013 22:00 UT .