11 May 2012
⇐20120510 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20120512⇒

NOAA
6 Active Regions
11471
11476
11477
11478
11479
11480

Flare Forecast
Flare Forecast
MM MotD

Coronal Holes


Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 W57N23
(735",390") 		28
(3.0e05) 		-3.8 6.5 1.9e34
2 W12S18
(183",-252") 		W06-W17
(11) 		1.1 -1.8 -4.6e32
3 E25N40
(-306",652") 		E34-E12
(22) 		0.6 2.3 8.4e32
4 W20S42
(239",-598") 		W17-W27
(10) 		0.2 -4.5 -4.9e32

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 11-May-2012 21:00 UT .