23 September 2019
⇐20190922 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20190924⇒

NOAA
0 Active Regions

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 E24N22
(-364",250") 		E40-E02
(38) 		6.3 1.1 1.2e21
2 E19N71
(-99",863") 		E71-W91
(162) 		3.2 1.0 1.2e21
3 W47S04
(697",-149") 		W43-W52
(9) 		0.3 -2.6 -1.9e20
4 E06S27
(-90",-532") 		E09-E02
(7) 		0.1 -0.7 -1.7e19
5 W37S33
(484",-596") 		W33-W41
(8) 		0.1 -1.0 -2.6e19

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 23-Sep-2019 23:40 UT .