20 September 2017
⇐20170919 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20170921⇒

NOAA
1 Active Region
12680

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 W46N65
(289",828") 		E73-W66
(139) 		3.3 1.1 6.5e33
2 E09S22
(-137",-466") 		E15-W02
(17) 		2.6 -0.4 -3.3e32
3 E17S57
(-154",-859") 		E55-W34
(89) 		1.7 -0.7 -2.3e33
4 E64N25
(-777",350") 		E73-E56
(17) 		0.6 0.9 7.4e32
5 W07S16
(106",-378") 		W02-W09
(7) 		0.2 -1.2 -5.7e31
6 E20S51
(-209",-805") 		E25-E14
(11) 		0.2 -0.8 -1.6e32

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 20-Sep-2017 19:30 UT .