NN Serpentis, Kartoniert / Broschiert

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Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Chen (2009) already inferred the presence of a tertiary companion orbiting the cataclysmic variable, hinted by orbital period changes, suggesting a putative orbital period spanning between 30 and 285 years and a minimum mass between 0.0043 and 0.18 Solar masses. In fall 2009 Qian et al. Have announced possible discovery of a planetary companion around the cataclysmic variable. They have estimated a minimum mass of 10.7 Jupiter masses and orbital period of 7.56 years, probably located at 3.29 Astronomical Units.