An Etymological Dictionary of Astronomy and Astrophysics
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فرهنگ ریشه شناختی اخترشناسی-اخترفیزیک

M. Heydari-Malayeri    -    Paris Observatory

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Number of Results: 1 Search : contact binary
contact binary
  دورین ِ پرماسی   
dorin-e parmâsi

Fr.: binaire de contact   

1) A → binary star system in which the two → components are so close that they exchange gases in a complex manner. Their overlapping → gravitational fields form a "peanut" shaped → equipotential surface.
2) Two roughly similar-sized asteroids or cometary nuclei resting on one another, presumably after coming together very gently. Examples are → Comet 67P/Churyumov-Gerasimenko and the asteroid → (486958) 2014 MU69.

→ contact; → binary.