Template:Planet Infobox/Pluto

From Wikipedia

Pluto Astronomical symbol of Pluto
Pluto in True Color
Discovery
Discovered by Clyde W. Tombaugh
Discovered on February 18, 1930
Orbital characteristics (Epoch J2000)
Semi-major axis 5,906,376,272 km
39.481 686 77 AU
Orbital circumference 36.530 Tm
244.186 AU
Eccentricity 0.248 807 66
Perihelion 4,436,824,613 km
29.658 340 67 AU
Aphelion 7,375,927,931 km
49.305 032 87 AU
Orbital period 90,613.3055 d (248.09 a)
Synodic period 366.73 d
Avg. Orbital Speed 4.666 km/s
Max. Orbital Speed 6.112 km/s
Min. Orbital Speed 3.676 km/s
Inclination 17.141 75°
(11.88° to Sun's equator)
Longitude of the
ascending node
110.303 47°
Argument of the
perihelion
113.763 29°
Number of satellites 3
Physical characteristics
Diameter 2390 km
(0.188 Earths or 1,485 miles)
Surface area 1.795×107 km2
(0.033 Earths)
Volume 7.15×109 km3
(0.0066 Earths)
Mass 1.25×1022 kg
(0.0021 Earths)
Mean density 1.750 g/cm3
Equatorial gravity 0.58 m/s2
(0.059 gee)
Escape velocity 1.2 km/s
Rotation period 6.387 d (6 d 9 h 17.6 min)
Rotation velocity 47.18 km/h (at the equator)
Axial tilt 122.54° (to orbit)
115.60° (to the ecliptic)[1]
Right ascension
of North pole
133.02° (8 h 52 min 5 s)
Declination -9.09°
Albedo 0.30
Surface temp.
min mean max
33 K 44 K 55 K
Adjective Plutonian
Atmospheric characteristics
Atmospheric pressure 0.30 pascals (summer maximum)
Composition nitrogen, methane