HD 10180

HD 10180 is a solar-like star in the constellation Hydrus, roughly 130 light-years away from Earth.

During a six- year study using the HARPS spectrograph on the 3.6 m telescope at La Silla Observatory, the European Southern Observatory in Chile, it was found that the star of a planetary system of at least six, but probably home to the seven planets.

The planetary system of HD 10180

  • HD 10180 b is an unconfirmed object. The suspected planet is 0.02 AU from the star, needs a little more than 1 day for a round and has a minimum mass, which corresponds approximately to the mass of the Earth.
  • HD 10180 c is 0.06 AU from the star away (about 6 times closer than Mercury to the Sun) takes 5.4 days to orbit and has a minimum mass of about 13 earth or 0.04 Jupiter masses.
  • HD 10180 d is about 0.1 AU from its star away, takes about 11.5 days to orbit and has a similar minimum mass such as HD 10180 c.
  • HD 10180 e is about 0.3 AU from HD 10180 ( a little closer than Mercury to the Sun ), takes about 60 days for a circumnavigation and has a minimum mass of about 0.08 Jupiter masses probably a gas giant.
  • HD 10180 f is 0.5 AU from the central star away ( closer than Venus at the sun ), requires 129 days for a round and has a similar minimum mass such as HD 10180 e
  • HD 10180 g is 1.4 AU from its star away (similar to the Mars to the Sun ), needs about 1.7 years for a round and has about 0.07 Jupiter masses.
  • HD 10180 h eventually moves about 3.4 AU from HD 10180 away, takes about 6.3 years for a round and is about 0.2 Jupiter masses of exoplanet with the largest minimum weight among the known planets of the system.
Declination Astrometry Radial velocity Intrinsic brightness Proper motion Smithsonian Astrophysical Observatory Star Catalog High Accuracy Radial velocity Planet Searcher ESO 3.6 m Telescope Astronomy and Astrophysics
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