Kepler-16
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Kepler-16 is an eclipsing binary star system in the constellation of Cygnus that was targeted by the Kepler spacecraft. Both stars are smaller than the Sun; the primary, Kepler-16A, is a K-type main-sequence star and the secondary, Kepler-16B, is... Wikipedia
Orbital period: 41 days
Apparent magnitude (V): 12
Constellation: Cygnus
Distance: 245.4 ± 0.5 ly; (75.2 ± 0.2 pc)
Eccentricity (e): 0.15944±0.00062
KIC: data
Period (P): 41.079220±0.000078 d