Pluto

Discovered 1930-02-18 by Clyde Tombaugh. Reclassified as dwarf planet in 2006

Mean Radius

1,188.3 km

Gravity

0.62 m/s²

Orbital Period

90560.0 d

Distance

39.482 AU

Temperature

44 K

Physical Properties

Mean Radius1,188.3 km

Mass1.3030 × 10^22 kg

Surface Gravity0.62 m/s²

Density1.854 g/cm³

Escape Velocity1.21 km/s

Mean Temperature44 K (-229°C)

Axial Tilt122.5°

Rotation Period153.30 h (retrograde)

AtmosphereYes

Ring SystemNone

Known Moons1

Orbital Elements (J2000)

Semi-major Axis39.481687 AU

Eccentricity0.24880766

Inclination17.14175°

Asc. Node (Ω)110.30347°

Arg. Perihelion (ω)113.76329°

Mean Anomaly (M₀)14.86205°

Orbital Period90560.000 days

Perihelion29.658 AU

Aphelion49.305 AU