10 August 2018
⇐20180809 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20180811⇒

NOAA
1 Active Region
12717

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 E27N58
(-227",753") 		E65-W87
(152) 		6.9 0.7 4.6e21
2 E16N13
(-253",108") 		E24-E06
(18) 		1.8 2.1 8.1e20
3 W39S05
(601",-156") 		W33-W46
(13) 		0.5 -1.4 -3.4e20
4 W38N46
(409",621") 		W35-W42
(7) 		0.1 -1.4 -5.3e19

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 10-Aug-2018 23:10 UT .