| Jupiter |
Earth |
Ratio (Jupiter/Earth) |
|
|---|---|---|---|
| Mass (1024 kg) | 1,898.13 | 5.9722 | 317.83 |
| Volume (1010 km3) | 143,128 | 108.321 | 1321.33 |
| Equatorial radius (1 bar level) (km) | 71,492 | 6,378.1 | 11.209 |
| Polar radius (km) | 66,854 | 6,356.8 | 10.517 |
| Volumetric mean radius (km) | 69,911 | 6,371.0 | 10.973 |
| Ellipticity | 0.06487 | 0.00335 | 19.36 |
| Mean density (kg/m3) | 1,326 | 5,513 | 0.241 |
| Gravity (mean, 1 bar) (m/s2) | 25.92 | 9.82 | 2.640 |
| Acceleration (eq., 1 bar) (m/s2) | 23.12 | 9.78 | 2.364 |
| Acceleration (pole, 1 bar) (m/s2) | 27.01 | 9.83 | 2.748 |
| Escape velocity (km/s) | 59.5 | 11.19 | 5.32 |
| GM (x 106 km3/s2) | 126.687 | 0.39860 | 317.83 |
| Bond albedo | 0.343 | 0.294 | 1.17 |
| Geometric albedo | 0.538 | 0.434 | 1.24 |
| V-band magnitude V(1,0) | -9.40 | -3.99 | - |
| Solar irradiance (W/m2) | 50.26 | 1361.0 | 0.037 |
| Black-body temperature (K) | 109.9 | 254.0 | 0.433 |
| Moment of inertia (I/MR2) | 0.254 | 0.3308 | 0.768 |
| J2 (x 10-6) | 14,736 | 1082.63 | 13.611 |
| Number of natural satellites | 95 | 1 | |
| Planetary ring system | Yes | No |
| Jupiter |
Earth |
Ratio (Jupiter/Earth) |
|
|---|---|---|---|
| Semimajor axis (106 km) | 778.479 | 149.598 | 5.204 |
| Sidereal orbit period (days) | 4,332.589 | 365.256 | 11.862 |
| Tropical orbit period (days) | 4,330.595 | 365.242 | 11.857 |
| Perihelion (106 km) | 740.595 | 147.095 | 5.035 |
| Aphelion (106 km) | 816.363 | 152.100 | 5.367 |
| Synodic period (days) | 398.88 | - | - |
| Mean orbital velocity (km/s) | 13.06 | 29.78 | 0.439 |
| Max. orbital velocity (km/s) | 13.72 | 30.29 | 0.453 |
| Min. orbital velocity (km/s) | 12.44 | 29.29 | 0.425 |
| Orbit inclination (deg) | 1.304 | 0.000 | - |
| Orbit eccentricity | 0.0487 | 0.0167 | 2.916 |
| Sidereal rotation period (hrs) | 9.9250* | 23.9345 | 0.415 |
| Length of day (hrs) | 9.9259 | 24.0000 | 0.414 |
| Obliquity to orbit (deg) | 3.13 | 23.44 | 0.134 |
| Inclination of equator (deg) | 3.13 | 23.44 | 0.134 |
Discoverer: Unknown
Discovery Date: Prehistoric
Distance from Earth
Minimum (106 km) 588.5
Maximum (106 km) 968.5
Apparent diameter from Earth
Maximum (seconds of arc) 50.1
Minimum (seconds of arc) 30.5
Mean values at opposition from Earth
Distance from Earth (106 km) 628.81
Apparent diameter (seconds of arc) 46.9
Apparent visual magnitude -2.7
Maximum apparent visual magnitude -2.94
Semimajor axis (AU) 5.20336301 Orbital eccentricity 0.04839266 Orbital inclination (deg) 1.30530 Longitude of ascending node (deg) 100.55615 Longitude of perihelion (deg) 14.75385 Mean Longitude (deg) 34.40438
Right Ascension: 268.057 - 0.006T Declination : 64.495 + 0.002T Reference Date : 12:00 UT 1 Jan 2000 (JD 2451545.0) T = Julian centuries from reference date
Dipole field strength: 4.30 Gauss-Rj3
Dipole tilt to rotational axis: 9.4 degrees
Longitude of tilt: 200.1 degrees
Dipole offset: 0.119 Rj
Surface (1 Rj) field strength: 4.0 - 13.0 Gauss
Rj denotes Jovian model radius, defined here to be 71,398 km
Surface Pressure: >>1000 bars Temperature at 1 bar: 165 K (-108 C) Temperature at 0.1 bar: 112 K (-161 C) Density at 1 bar: 0.16 kg/m3 Wind speeds Up to 150 m/s (<30 degrees latitude) Up to 40 m/s (>30 degrees latitude) Scale height: 27 km Mean molecular weight: 2.22 Atmospheric composition (by volume, uncertainty in parentheses) Major: Molecular hydrogen (H2) - 89.8% (2.0%); Helium (He) - 10.2% (2.0%) Minor (ppm): Methane (CH4) - 3000 (1000); Ammonia (NH3) - 260 (40); Hydrogen Deuteride (HD) - 28 (10); Ethane (C2H6) - 5.8 (1.5); Water (H2O) - 4 (varies with pressure) Aerosols: Ammonia ice, water ice, ammonia hydrosulfide
Notes on the factsheets
- definitions of parameters, units, notes on sub- and superscripts, etc.
Jovian Satellite Fact Sheet
Jovian Rings Fact Sheet
Planetary Fact Table
- metric units
Planetary Fact Table
- U.S. units
Planetary Fact Table
- Earth ratio
Jupiter Home Page
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