1 day / second

0.5 AU

50000 Quaoar

Dwarf Planet

A relatively large trans-Neptunian dwarf planet discovered in 2002, located in the Kuiper Belt about 43 AU from the Sun, with a small moon named Weywot and a surprising dense ring system discovered in 2023.

Key Facts

orbital regime

Kuiper Belt

learn more

Wikipedia

mass

1.2000e+21 kg

radius

545 km

hill radius

0.025 AU

semi-major axis

43.694 AU

eccentricity

0.041

inclination

7.99º

longitude of the ascending node

188.927º

argument of periapsis

147.48º

orbital period

288.823 years

surface gravity

0.027 g

discovery date

June 4, 2002

discovered by

Michael E. Brown and Chadwick Trujillo at Palomar Mountain Observatory

name origins

Named after Chinigchinix, a creation deity of the Tongva Native American people

dimensions

Radius of approximately 535-543 kilometers

albedo

0.124

material composition

Trans-Neptunian object with water ice presence

density

2.2 g/cm³
Other Dwarf Planets
Pluto
Ceres
Sedna
Orcus
Haumea
Eris