periastron effect

'periastron effect' can also refer to...


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An increase in the brightness of a binary star that has a highly eccentric orbit, when the separation between the components is at a minimum. It is, in fact, an enhancement of the reflection effect at the time of periastron, and arises from the same cause: irradiation of one star by the other.

Subjects: Astronomy and Astrophysics.

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