28 July 2013
⇐20130727 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20130729⇒

NOAA
4 Active Regions
11800
11801
11805
11806

Flare Forecast
Flare Forecast
MM MotD

Coronal Holes


Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 E48N37
(-564",519") 		E58-E22
(36) 		2.9 1.4 3.3e33
2 W02N35
(31",469") 		E10-W13
(23) 		0.4 5.1 6.5e32
3 E26N56
(-235",735") 		E34-E17
(17) 		0.2 -0.8 -1.0e32

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 28-Jul-2013 21:00 UT .