Encyclopedia of Astrobiology

Living Edition
| Editors: Muriel Gargaud, William M. Irvine, Ricardo Amils, Henderson James Cleaves, Daniele Pinti, José Cernicharo Quintanilla, Michel Viso

Orbital Period

  • Sean N. RaymondEmail author
Living reference work entry
DOI: https://doi.org/10.1007/978-3-642-27833-4_1120-4


The orbital period ( P) is the time required for a body to complete an orbit around a central mass. The orbital period can be calculated by Kepler’s third law, which in the solar system takes the form
$$ {P}^2={a}^3 $$
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© Springer-Verlag Berlin Heidelberg 2014

Authors and Affiliations

  1. 1.Laboratoire d’Astrophysique de BordeaixCNRS; Universite de BordeauxFloiracFrance