18 October 2018
⇐20181017 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20181019⇒

NOAA
2 Active Regions
12725
12724

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 E03N63
(-25",816") 		E70-W29
(99) 		4.4 1.3 5.6e21
2 E33S23
(-485",-443") 		E44-E18
(26) 		2.6 -0.4 -4.4e20
3 W04S47
(40",-769") 		E38-W16
(54) 		2.4 -0.2 -4.7e20
4 E29S02
(-471",-119") 		E38-E21
(17) 		0.6 -0.9 -1.8e20
5 E17S33
(-238",-594") 		E22-E13
(9) 		0.2 -0.7 -4.9e19

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 18-Oct-2018 23:10 UT .