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Article Dans Une Revue Astronomy and Astrophysics - A&A Année : 2020

Orbital inclination and mass of the exoplanet candidate Proxima c

Résumé

We analyze the orbital parameters of the recently discovered exoplanet candidate Proxima c using a combination of its spectroscopic orbital parameters and Gaia DR2 astrometric proper motion anomaly. We obtain an orbital inclination of i = 152 ± 14 deg, corresponding to a planet mass of m c = 12 +12 −5 M ⊕ , comparable to Uranus and Neptune. While the derived orbital parameters are too uncertain to accurately predict the position of the planet for a given epoch, we present a map of its probability of presence relative to its parent star in the coming years.
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Dates et versions

hal-02565278 , version 1 (06-05-2020)

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Pierre Kervella, Frédéric Arenou, Jean Schneider. Orbital inclination and mass of the exoplanet candidate Proxima c. Astronomy and Astrophysics - A&A, 2020, 635, pp.L14. ⟨10.1051/0004-6361/202037551⟩. ⟨hal-02565278⟩
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