27 March 2012
⇐20120326 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20120328⇒

NOAA
5 Active Regions
11438
11442
11444
11445
11447

Flare Forecast
Flare Forecast
MM MotD

Coronal Holes


Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 W03S61
(25",-780") 		E59-W30
(89) 		4.1 0.9 3.1e33
2 E07S21
(-112",-243") 		E10-E04
(6) 		0.1 -5.2 -1.5e32
3 W26N10
(409",274") 		W22-W29
(7) 		0.1 -10.7 -3.9e32
4 W31N04
(501",163") 		W29-W34
(5) 		0.1 -5.0 -1.6e32

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 27-Mar-2012 23:00 UT .