page_title: Pirx (planet)
hierarchical_section_title: Pirx (planet)
caption_attribution_description: English: Artist's impression of the exoplanet BD+14 4599 b. View from the surface of its hypothetical moon. Polski: Artystyczna wizualizacja widoku na planetę BD+14 4599 b z powierzchni jej hipotetycznego księżyca.
context_page_description: Pirx is an exoplanet orbiting the K-type main sequence star Solaris about 161 light-years from Earth in the constellation Pegasus. It orbits its star within the habitable zone at a distance of 0.777 AU, close to that of Venus, but its star is less energetic, thus its habitable zone is closer to it than Earth. The exoplanet was found by using the radial velocity method, from radial-velocity measurements via observation of Doppler shifts in the spectrum of the planet's parent star.
  The planet was named during the NameExoWorlds campaign by Poland. Pilot Pirx is a fictional character from stories by Polish science-fiction writer Stanisław Lem.
context_section_description: Pirx (BD+14 4559 b) is an exoplanet orbiting the K-type main sequence star Solaris about 161 light-years (49 parsecs, or nearly 1.5×10¹⁵ km) from Earth in the constellation Pegasus. It orbits its star within the habitable zone at a distance of 0.777 AU, close to that of Venus, but its star is less energetic, thus its habitable zone is closer to it than Earth. The exoplanet was found by using the radial velocity method, from radial-velocity measurements via observation of Doppler shifts in the spectrum of the planet's parent star.
  The planet was named during the NameExoWorlds campaign by Poland. Pilot Pirx is a fictional character from stories by Polish science-fiction writer Stanisław Lem.
caption: Artist's impression of the exoplanet BD+14 4599 b. View from the surface of its hypothetical moon.
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