19 October 2017
⇐20171018 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20171020⇒

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 E30N22
(-441",286") 		E44-E10
(34) 		3.6 1.4 1.8e33
2 W29S24
(432",-461") 		W17-W39
(22) 		2.7 -1.0 -1.2e33
3 E04N72
(-23",882") 		E84-W88
(172) 		2.5 1.0 4.5e33
4 E09S64
(-66",-905") 		E47-W37
(84) 		0.9 -1.0 -2.2e33
5 E32N36
(-408",507") 		E35-E28
(7) 		0.1 -1.1 -3.4e31

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 19-Oct-2017 23:30 UT .