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periastron

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periastron

In astronomy, point at which an object travelling in an elliptical orbit around a star is at its closest to the star; the point at which it is furthest is known as the apastron.



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The paper includes four other bright southern systems including Beta Phoenicis which has now apparently passed unobserved through periastron.
Using the Innes telescope again by Argyle, R.W. / Monthly Notes of the Astronomical Society of Southern Africa
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