20 March 2012
⇐20120319 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20120321⇒

NOAA
6 Active Regions
11432
11433
11434
11435
11438
11439

Flare Forecast
Flare Forecast
MM MotD

Coronal Holes


Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 E05S21
(-74",-234") 		E09-W03
(12) 		0.8 3.7 5.8e32
2 E49S73
(-210",-894") 		E69-E19
(50) 		0.4 1.3 1.7e33
3 E34N45
(-381",751") 		E45-E20
(25) 		0.4 1.8 8.1e32
4 W07N06
(109",211") 		E01-W12
(13) 		0.4 -1.9 -1.4e32
5 E11S33
(-154",-420") 		E15-E07
(8) 		0.2 3.7 1.7e32
6 E04S31
(-60",-397") 		E06-E01
(5) 		0.1 4.1 1.4e32

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-Mar-2012 12:00 UT .