Black-Body Temperature

83.9 K

Bond Albedo

0.75

Ellipticity

0.098 0

Equatorial Radius (Defined by Pressure = 1 bar)

60 268 km

Escape Velocity

35.5 km s⁻¹

GM

37.931 × 10⁶ km³ s⁻²

Mass

468.46 × 10²⁴ kg

Mean Density

687 kg m⁻³

Moment of Inertia

0.210 I MR⁻²

Polar Radius (Defined by Pressure = 1 bar)

54 364 km

Solar Irradiance

15.0 W m⁻²

Surface Gravity

8.96 m s⁻²

Visual Geometric Albedo

0.47

Visual Magnitude

−8.88

Volume

82 713 × 10¹⁰ km³

Volumetric Mean Radius

58 232 km

Aphelion

1 506.4 × 10⁶ km

Mean Orbital Velocity

9.66 km s⁻¹

Obliquity to Orbit

26.73°

Orbital Eccentricity

0.054 15

Orbital Inclination

2.484°

Perihelion

1 347.6 × 10⁶ km

Semimajor Axis

1 426.8 × 10⁶ km

Sidereal Orbit Period

10 759.22 days

Sidereal Rotation Period (System III Coordinates)

10.500 hours

Synodic Period

378.09 days

Tropical Orbit Period

10 746.94 days

Apparent Magnitude near Opposition

0.7

Maximum Apparent Diameter from Earth

20.1 arc seconds

Maximum Distance from Earth

1 658.5 × 10⁶ km

Minimum Apparent Diameter from Earth

14.5 arc seconds

Minimum Distance from Earth

1 195.5 × 10⁶ km

Average Temperature

97 K

Mean Molecular Weight

2.07 g mol⁻¹

Scale Height

59.6 km

Surface Pressure

More than 100 bars

Temperature at 1 bar

134 K

Wind Speeds (Over 30° lat.)

Up to 150 m s⁻¹

Wind Speeds (Under 30° lat.)

Up to 400 m s⁻¹