15 October 2017
⇐20171014 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20171016⇒

NOAA
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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 W16N61
(132",790") 		E87-W47
(134) 		6.2 1.0 5.4e33
2 E25S17
(-386",-366") 		E36-W02
(38) 		4.1 -1.0 -1.4e33

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 15-Oct-2017 23:30 UT .