10 May 2012
⇐20120509 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20120511⇒

NOAA
5 Active Regions
11471
11474
11476
11477
11478

Flare Forecast
Flare Forecast
MM MotD

Coronal Holes


Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 W43N22
(600",392") 		W23-W58
(35) 		4.2 -4.3 -1.1e34
2 E04S19
(-67",-254") 		E09-W04
(13) 		1.4 -1.0 -2.8e32
3 W07S42
(80",-599") 		W00-W12
(12) 		0.3 -3.4 -3.8e32

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 10-May-2012 15:00 UT .