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Solar
Dwarf planet

Pluto

(134340) Pluto

Physical properties

Mean radius
1,188 km
Mass
1.303 × 10²² kg
Density
1.854 g/cm³
Rotation period
-6.39 days
Axial tilt
119.59°
Surface gravity
0.62 m/s²
Escape velocity
1.21 km/s

Visual & observation

Geometric albedo
0.52
Absolute magnitude (H)
-0.7
Representative colour
#CFA88B

Discovery & classification

Discovered by
Clyde Tombaugh
Discovery date
18 February 1930

5 moons

Charon 606 km 0.0001 AU 6.4 days
Hydra 25 km 38.2 days
Kerberos 6.00 km 32.2 days
Nix 25 km 24.9 days
Styx 5.00 km 20.2 days

Sources