Planet Pluto
Yes...Planet Pluto...This website will always consider Pluto to be our friendly planet neighbor!!!
Pluto
Discovered by Clyde W. Tombaugh
Date of discovery February 18, 1930
Mass (kg) 1.27e+22
Mass (Earth = 1) 2.125e-03
Equatorial radius (km) 1,137
Equatorial radius (Earth = 1) 0.1783
Mean density (gm/cm^3) 2.05
Mean distance from the Sun (km) 5,913,520,000
Mean distance from the Sun (Earth = 1)) 39.5294
Rotational period (days) -6.3872
Orbital period (years) 248.54
Mean orbital velocity (km/sec) 4.74
Orbital eccentricity 0.2482
Tilt of axis (degrees) 122.52
Orbital inclination (degrees) 17.148
Equatorial surface gravity (m/sec^2) 0.4
Equatorial escape velocity (km/sec) 1.22
Visual geometric albedo 0.3
Magnitude (Vo) 15.12
Atmospheric composition: Methane, Nitrogen 0.3