3 September 2013
⇐20130902 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20130904⇒

NOAA
4 Active Regions
11834
11835
11836
11837

Flare Forecast
Flare Forecast
MM MotD

Coronal Holes


Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 E38N58
(-305",756") 		E63-W19
(82) 		2.8 0.2 6.2e32
2 W28S07
(442",-217") 		W21-W34
(13) 		1.3 -0.9 -3.7e32
3 W67N38
(691",545") 		W58-W80
(22) 		0.4 1.0 8.0e32

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 3-Sep-2013 23:35 UT .