22 October 2017
⇐20171021 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20171023⇒

NOAA
1 Active Region
12685

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 W05N51
(57",690") 		E63-W35
(98) 		9.9 0.9 4.6e33
2 W13S01
(211",-100") 		W01-W20
(19) 		1.9 0.7 2.8e32
3 W46S64
(307",-888") 		W41-W57
(16) 		0.1 -1.4 -6.1e32
4 W12S74
(54",-946") 		E02-W20
(22) 		0.0 -1.2 -5.4e32

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 22-Oct-2017 23:30 UT .