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Bysen:Planet Infobox/Pluto

Fram Wikipǣdian
Pluto Tungollic tācen Pluto
Discovery
Discovered fram Clyde W. Tombaugh
Discovered on 18 Solmōnaþ, 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°
Rīm mōnena 3
Physical characteristics
Diameter 2306±20 km
(18% of Earth, or
1423±12 mi)
Surface area 1.795×107 km²
(0.033 Earths)
Volume 7.15×109 km³
(0.0066 Earths)
Wiht (1.305±0.007)×1022 kg [1]
(0.0021 Earths)
Mean density 2.03±0.06 g/cm³ [2]
Equatorial gravity 0.58 m/s²
(0.059 gee)
Escape velocity 1.2 km/s
Rotation period −6.387230 d
(6 d 9 h 17 m 36 s)
Rotation velocity 47.18 km/h (at the equator)
Axial tilt 119.59° (to orbit)
112.78° (to the ecliptic)
Right ascension
of North pole
133.045±0.02°
(8 h 52 min 11 s) [3]
Declination -6.145±0.02°
Albedo 0.49–0.66 (varies by 35%) [4] [5]
Surface temp.
min mean max
33 K 44 K 55 K
Tōgeīecendlic Plutonisc
Atmospheric characteristics
Atmospheric pressure 0.30 pascals (summer maximum)
Composition nitrogen, methane