26 March 2012
⇐20120325 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20120327⇒

NOAA
7 Active Regions
11438
11440
11442
11443
11444
11445
11446

Flare Forecast
Flare Forecast
MM MotD

Coronal Holes


Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 E18S61
(-144",-788") 		E40-W49
(89) 		4.3 0.8 3.1e33
2 W17N07
(282",232") 		W09-W25
(16) 		0.6 -5.9 -8.2e32
3 W03N19
(50",422") 		E03-W08
(11) 		0.2 -1.7 -8.6e31
4 W39S19
(577",-229") 		W36-W42
(6) 		0.1 -5.0 -2.4e32

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 26-Mar-2012 23:00 UT .