28 August 2013
⇐20130827 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20130829⇒

NOAA
7 Active Regions
11823
11828
11834
11835
11836
11827
11833

Flare Forecast
Flare Forecast
MM MotD

Coronal Holes


Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 W11N34
(157",429") 		E17-W25
(42) 		3.1 2.4 2.2e33
2 W13S08
(208",-253") 		E04-W24
(28) 		2.8 1.0 6.9e32
3 E11N51
(-111",661") 		E14-E06
(8) 		0.1 -1.5 -6.5e31

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-2013 23:35 UT .