English Pronunciation Key for Astronomical Bodies This spelling pronunciation system is used on the planetoids and moons of the solar system pages. ... 8405 Asbolus is a Centaur, that is, an icy asteroid that orbits between Jupiter and Neptune. ... 19521 Chaos is a large trans-Neptunian object. ... Charon (shair-un or kair-un, Greek ΧάÏÏν) is the only known satellite of Pluto. ... 2060 Chiron (IPA: ) is an object in the outer Solar system with an orbit between those of Saturn and Uranus and a radius of 71±5 km [1]. Although it was initially classified as an asteroid, later dispute arose as to whether it was an asteroid or actually a comet. ... 53311 Deucalion (original provisional designation: 1999 HU11) is a trans-Neptunian object. ... 38628 Huya (original provisional designation: 2000 EB173) is a trans-Neptunian object. ... (28978) Ixion (ik·sye·un) is a Kuiper belt object discovered on May 22, 2001 with a diameter of < 822 km and a semimajor axis of about 39. ... 90482 Orcus (originally known by the provisional designation 2004 DW) is a Kuiper Belt object (KBO) that was discovered by Michael (Mike) E. Brown of Caltech, Chadwick (Chad) A. Trujillo of the Gemini Observatory, and David L. Rabinowitz of Yale University. ... 5145 Pholus (FOE luss) is a Centaur in an eccentric orbit, with a perihelion near the orbit of Saturn and aphelion near the orbit of Neptune. ... Atmospheric characteristics Atmospheric pressure 0. ... Artists impression by G. Bacon of STScI / NASA 50000 Quaoar (pronounced kwah·war, kwah·wor, or kwow·ur, Tongva ) [1] is a Trans-Neptunian object orbiting the Sun in the Edgeworth-Kuiper belt. ... 38083 Rhadamanthus (formerly known as (38083) 1999 HX11) is a trans-Neptunian object. ... 90377 Sedna is a trans-Neptunian object, discovered by Michael Brown (Caltech), Chad Trujillo (Gemini Observatory) and David Rabinowitz (Yale University) on November 14, 2003. ... 20000 Varuna (VAR oo na) is a Kuiper Belt object about 1060 kilometers in diameter, estimated from a combination of thermal and optical measurements. ...