30 July 2013
⇐20130729 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20130731⇒

NOAA
7 Active Regions
11800
11801
11805
11806
11807
11808
11809

Flare Forecast
Flare Forecast
MM MotD

Coronal Holes


Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 E27N40
(-325",542") 		E69-W07
(76) 		5.1 1.7 4.0e33
2 E40S38
(-475",-638") 		E51-E23
(28) 		1.6 1.1 1.6e33
3 W16N50
(164",664") 		W13-W20
(7) 		0.1 -1.5 -7.2e31

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 30-Jul-2013 21:00 UT .