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Trans-Neptunian satellites

  • S/2015 (136472) 1Astronomers pointed the Hubble Space Telescope toward the Kuiper belt in April 2015. They used a specific instrument called the Wide Field Camera 3 to scan…
  • Dysnomia (moon)Dysnomia orbits a world so far from the Sun that sunlight takes more than five hours to reach it. It is the only known moon of the dwarf planet Eris, and its…
  • Namaka (moon)Michael E. Brown spotted a faint smudge of light in high-resolution images taken by the Keck II telescope on the 1st of March, the 28th of May, and the 30th…
  • Hiʻiaka (moon)Michael E. Brown spotted the moon on the 26th of January 2005 using adaptive optics at the W. M. Keck Observatory on Mauna Kea, Hawaii.
  • Vanth (moon)Vanth is the only known moon of Orcus, a large dwarf planet orbiting beyond Neptune, and it sits in a place so remote that its apparent magnitude from Earth…
  • Xiangliu (moon)A faint point of light emerged from archival Hubble Space Telescope images taken on the 18th of September 2010. Csaba Kiss and his team had been analyzing…
  • Styx (moon)On the 11th of July 2012, astronomers announced the existence of a tiny moon orbiting Pluto. Mark R. Showalter led the team that found this object using…
  • Kerberos (moon)On the 28th of June 2011, researchers using the Hubble Space Telescope spotted a faint point of light near Pluto. This discovery came during an attempt to…
  • Nix (moon)On the 15th of May 2005, astronomers using the Hubble Space Telescope captured images that would change our understanding of Pluto.
  • Hydra (moon)On the 15th of May 2005, astronomers using the Hubble Space Telescope spotted faint points of light near Pluto. These images captured two new moons that had…
  • Charon (moon)Charon is the largest moon of the dwarf planet Pluto, and it is strange in almost every way a moon can be. Its mean radius is 606 km, which makes it more…