22 July 2013
⇐20130721 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20130723⇒

NOAA
3 Active Regions
11793
11799
11800

Flare Forecast
Flare Forecast
MM MotD

Coronal Holes


Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 W53N31
(649",436") 		W34-W81
(47) 		3.7 -1.9 -6.1e33
2 E11N07
(-186",43") 		E20-E02
(18) 		2.5 10.8 5.1e33
3 W13S50
(136",-775") 		W01-W21
(20) 		0.3 -1.3 -3.9e32
4 E39S29
(-525",-506") 		E45-E32
(13) 		0.3 4.4 9.3e32

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 22-Jul-2013 21:00 UT .