21 August 2015
⇐20150820 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20150822⇒

NOAA
5 Active Regions
12401
12403
12404
12400
12402

Flare Forecast
Flare Forecast
MM MotD

Coronal Holes


Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 W42N49
(418",660") 		E06-W60
(66) 		6.3 0.8 4.3e33
2 W13S04
(208",-175") 		W03-W20
(17) 		2.1 2.7 1.2e33
3 E07S21
(-112",-449") 		E12-E01
(11) 		0.5 10.3 1.5e33
4 W14N32
(192",402") 		E02-W23
(25) 		0.4 0.9 1.0e32
5 E12N30
(-165",382") 		E15-E05
(10) 		0.2 -0.9 -5.8e31
6 E61N06
(-829",39") 		E66-E55
(11) 		0.1 -2.7 -2.6e32

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 21-Aug-2015 23:35 UT .