27 October 2017
⇐20171026 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20171028⇒

NOAA
2 Active Regions
12685
12686

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 W38N68
(226",868") 		E78-W66
(144) 		2.7 1.1 6.1e33
2 E29S24
(-429",-463") 		E40-E16
(24) 		2.3 -1.4 -1.5e33
3 E39S61
(-295",-871") 		E64-E37
(27) 		0.4 -0.5 -6.5e32
4 E03N11
(-54",112") 		E05-E01
(4) 		0.1 -6.1 -6.5e31

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 27-Oct-2017 23:30 UT .