17 October 2017
⇐20171016 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20171018⇒

NOAA
1 Active Region
12684

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 W04S20
(61",-417") 		E11-W19
(30) 		3.7 -1.2 -1.2e33
2 W26N67
(162",852") 		E76-W88
(164) 		3.4 1.0 5.0e33
3 W40N37
(495",513") 		W34-W68
(34) 		1.0 2.4 1.3e33
4 E27S66
(-176",-910") 		E55-W07
(62) 		0.6 -0.7 -1.8e33
5 E53N13
(-748",157") 		E57-E46
(11) 		0.4 2.3 7.4e32
6 E55N21
(-741",293") 		E66-E45
(21) 		0.3 0.6 1.9e32

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 17-Oct-2017 23:30 UT .