20 July 2018
⇐20180719 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20180721⇒

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 E28S34
(-370",-580") 		E62-W07
(69) 		9.8 -0.7 -4.0e21
2 W27N67
(165",840") 		E85-W58
(143) 		3.2 1.3 6.7e21
3 W11S28
(162",-513") 		W06-W15
(9) 		0.5 -0.7 -1.2e20
4 W44N42
(493",586") 		W36-W51
(15) 		0.3 0.9 2.2e20
5 W02S34
(24",-597") 		E03-W04
(7) 		0.1 -0.8 -2.4e19

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-Jul-2018 23:10 UT .