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arXiv · 2003.13106

Orbital inclination and mass of the exoplanet candidate Proxima c

Pierre Kervella·Frédéric Arenou·Jean Schneider
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Abstract

We analyse the orbital parameters of the exoplanet candidate Proxima c recently discovered by Damasso et al. (2020) using a combination of its spectroscopic orbital parameters and Gaia DR2 proper motion anomaly. We obtain an orbital inclination of $i = 152 \pm 14 \deg$ for the prograde solution, corresponding to a planet mass of $m_c = 12^{+12}_{-5}\ M_\oplus$, comparable to Uranus or Neptune. While the derived orbital parameters are too uncertain to predict accurately the position of the planet for a given epoch, we present a map of its probability of presence relatively to its parent star in the coming years.

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Pierre Kervella, Frédéric Arenou, Jean Schneider. 2020-03-29. Orbital inclination and mass of the exoplanet candidate Proxima c. https://doi.org/10.1051/0004-6361/202037551

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