20 October 2018
⇐20181019 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20181021⇒

NOAA
2 Active Regions
12724
12725

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 E14S10
(-224",-259") 		E45-W26
(71) 		15.7 -0.2 -7.8e20
2 W10N66
(67",843") 		E71-W40
(111) 		4.1 1.2 5.9e21
3 W19S68
(123",-919") 		E23-W43
(66) 		0.7 -0.6 -1.7e21
4 W41N39
(493",556") 		W38-W50
(12) 		0.3 1.0 2.3e20
5 E18N43
(-218",598") 		E21-E15
(6) 		0.1 -0.9 -2.2e19

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-Oct-2018 23:10 UT .