21 February 2013
⇐20130220 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20130222⇒

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 E33S53
(-323",-707") 		E74-E04
(70) 		1.5 -2.7 -3.1e33
2 W37S42
(432",-570") 		W25-W57
(32) 		0.6 -1.1 -4.1e32
3 W20N33
(282",619") 		W13-W28
(15) 		0.4 -3.9 -7.3e32
4 E00S49
(-4",-652") 		E05-W04
(9) 		0.1 -6.1 -3.0e32
5 W22S46
(247",-621") 		W16-W27
(11) 		0.1 -1.6 -7.4e31

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 21-Feb-2013 22:00 UT .