23 October 2017
⇐20171022 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20171024⇒

NOAA
1 Active Region
12685

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 W22N52
(221",705") 		E85-W50
(135) 		9.6 0.7 4.3e33
2 W29S01
(462",-100") 		W21-W34
(13) 		1.0 0.7 2.1e32

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 23-Oct-2017 23:30 UT .