20 September 2016
⇐20160919 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20160921⇒

NOAA
4 Active Regions
12592
12593
12594
12595

Flare Forecast
Flare Prediction System
MM MotD

Coronal Holes


Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 W36S15
(541",-339") 		W12-W52
(40) 		4.1 -0.7 -1.4e33
2 E33N68
(-198",841") 		E84-W69
(153) 		3.0 0.6 2.7e33
3 W09S66
(61",-912") 		E35-W52
(87) 		0.8 -1.0 -2.7e33
4 E40S03
(-617",-132") 		E44-E36
(8) 		0.3 1.3 1.7e32
5 W36S30
(492",-551") 		W34-W39
(5) 		0.1 -0.9 -4.7e31
6 W35S33
(466",-596") 		W32-W39
(7) 		0.1 -1.3 -5.2e31

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 20-Sep-2016 20:30 UT .