28 August 2012
⇐20120827 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20120829⇒

NOAA
7 Active Regions
11553
11554
11555
11556
11557
11558
11559

Flare Forecast
Flare Forecast
MM MotD

Coronal Holes


Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 W07N09
(113",24") 		E02-W13
(15) 		0.5 3.1 2.5e32
2 W29N28
(414",349") 		W22-W36
(14) 		0.3 -4.2 -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 28-Aug-2012 21:00 UT .