28 September 2018
⇐20180927 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20180929⇒

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 E01N68
(-4",839") 		E90-W69
(159) 		4.3 1.5 7.7e21
2 E01N05
(-22",-25") 		E11-W14
(25) 		2.6 -0.1 -2.6e19
3 E30S09
(-480",-246") 		E40-E12
(28) 		2.1 -1.0 -7.5e20

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 28-Sep-2018 23:10 UT .