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8 November, 19:07

A star with the same mass of the sun has a newly discovered planet whose semi-major axis of 2.48 au and an eccentricity of 0.08. what is the aphelion distance of the new planet

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  1. 8 November, 20:22
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    Aphelion means farthest distance:

    r_a = a * (1+e), a = 2.48, e = 0.08

    perihelion is a * (1-e).

    Also, other people would say apastron and periastron, changing helio=Sun for another star.
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