17 Mar. 09:Fernandez et al 2009 find a period which "differs by 2.5 from previously published period. More data are needed to tell whether the period is actually variable (as it would be in the presence of an additional body) or if the timing errors have been underestimated."
Alias: GSC 03413-00005 or TOI-1720. XO-2N is likely the secondary component of the widely separated (a = 4600 AUs) binary system that includes non-transiting exoplanet host XO-2S.
GTC OSIRIS transiting exoplanet atmospheric survey: detection of sodium in XO-2b from differential long-slit spectroscopy
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MNRAS
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A Uniformly Derived Catalogue of Exoplanets from Radial Velocities
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MNRAS
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paperarxiv
Defining and cataloging exoplanets: The exoplanet.eu database
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The Exoplanet Orbit Database
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Extrasolar planet taxonomy: a new statistical approach