1 October 2013
⇐20130930 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20131002⇒

NOAA
4 Active Regions
11850
11854
11855
11851

Flare Forecast
Flare Forecast
MM MotD

Coronal Holes


Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 E22N43
(-259",581") 		E27-E18
(9) 		0.1 -1.4 -4.6e31
2 E45N52
(-411",707") 		E50-E42
(8) 		0.0 -0.8 -3.8e31

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 1-Oct-2013 23:35 UT .