Dwarf Planet Pluto Data

Orbital Elements
Semimajor Axis:39.4821 AU
Argument of Perifocus:113.76°
Longitude of Ascending Node:110.30°
Mean Motion:0.003973966° per day
Time of Periapsis:1990 Jan 13
Orbital Period:248.0208 years
Mass:0.00220 ME
Equatorial Radius:0.1805 RE
Rotational Inclination:120°
Rotational Period:6.38723 days
Surface Temperature:~ -200°C


Satellite Name Orbital Semimajor Axis (km) Orbital Period (days) Mass (kg) Discovery
Discoverer NameAnnouncement Date
Charon1 1.9591·1046.387231.59·1021 J. W. Christy1978 June 22
Styx 4.2393·10420.167.5·1015 M. Showalter, et al2012 July 11
Nix 4.8671·10424.855·1016 A. Stern, et al2005 Oct 31
Kerberos 5.7729·10432.171.6·1016 M. Showalter, et al2011 July 20
Hydra 6.4698·10438.205·1016 A. Stern, et al2005 Oct 31
  1. Charon would be classified a dwarf planet if it were not a satellite of Pluto.

1 AU = 1.49597870691·1011 m            1 year = 365.25 days = 31557600 s
1 ME = 5.9742·1024 kg            1 RE = 6.378136·106 m

The URL of this page is: http://www.princeton.edu/~willman/planetary_systems/Sol/Pluto
This page was last updated: 2020 October 2
You may contact Alex at: willman@Princeton.EDU

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