Gliese 876 e

Gliese 876 e
Immagine artistica di Gliese 876 e.
Stella madreGliese 876
Scoperta2010
ScopritoriRivera et al.
CostellazioneAquario
Distanza dal Sole15 anni luce
Parametri orbitali
Semiasse maggiore0.3343 UA
Periodo orbitale124.26 ± 0.70 giorni
Eccentricità0.055 ± 0.012
Dati fisici
Massa
14.6 ± 1.7 M⊕
Modifica dati su Wikidata · Manuale

Gliese 876 e è un pianeta extrasolare che orbita intorno a Gliese 876, una nana rossa distante 15 anni luce dal sistema solare.

Caratteristiche

La distanza media dalla stella madre è di 0,33 U.A. e il periodo orbitale di circa 124 giorni. Questo pianeta è in risonanza orbitale con Gliese 876 c e Gliese 876 b nel rapporto di 1:2:4, come avviene per le lune di Giove, Io, Europa e Callisto; compie un'orbita mentre il pianeta b ne compie 2 e c ne effettua 4. La sua massa è paragonabile a quella di Urano, circa 15 volte quella terrestre[1]

Note

  1. ^ Eugenio J. Rivera, Gregory Laughlin, Paul Butler, Steven S. Vogt, Nader Haghighipour, Stefano Meschiari, The Lick-Carnegie Exoplanet Survey: A Uranus-mass Fourth Planet for GJ 876 in an Extrasolar Laplace Configuration, in The Astrophysical Journal, vol. 719, n. 1, luglio 2010, pp. 890–899, Bibcode:2010ApJ...719..890R, DOI:10.1088/0004-637X/719/1/890, arXiv:1006.4244.

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