13 October 2017
⇐20171012 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20171014⇒

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 W21N58
(187",760") 		E85-W75
(160) 		8.5 1.0 7.3e33
2 E53S15
(-742",-303") 		E65-E44
(21) 		0.5 -1.2 -5.6e32
3 W31S66
(201",-908") 		W21-W52
(31) 		0.3 -0.7 -8.8e32

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 13-Oct-2017 23:30 UT .