Solar System Parameters

	Mercury	Venus	Earth	Mars	Jupiter	Saturn	Uranus	Neptune	Pluto
Mass (1024 kg)	0.3302	4.869	5.975	0.6419	1,898.6	568.46	86.83	102.43	0.0125
Equatorial Radius (km)	2439	6052	6378	3393	71,492	60,268	25,559	24,766	1137
Mean Density (kg/m3)	5,427	5,204	5,520	3,933	1,326	687	1,318	1,638	2,050
Orbital Distance (106km)	57.9	108.2	149.6	227.9	778.3	1427.0	2869.6	4496.6	4913.5
Orbital Period (days)	87.969	224.7	365.25	686.98	4330.6	10,747	30,588	59,800	90,591
Rotational Period (hours)	1407.6	5832.5 (ret.)	23.934	24.62	9.92	10.5	17.24 (ret.)	16.11	153.3 (ret.)
Average Surface Temperature (K)	440	737	288	210	129	97	58	58	50
Surface Pressure	10-15 bars	92 bars	1.014 bars	0.008 bars	>>100 bars	>>100 bars	>>100 bars	>>100 bars	3 microbars
Atm. Comp.	98% He 2% H2	96.5% CO2, 3.5% N2	78% N2, 21% O2, 1% H2O	95.32% CO2, 2.7% N2	89% H2, 11% He	89% H2, 11% He	89% H2, 11% He	89% H2, 11% He	meth, N2

Satellite Parameters (Jupiter, Earth, Pluto)

	Jupiter: Io	Jupiter: Europa	Jupiter: Ganymede	Jupiter: Callisto	Earth: Moon	Pluto: Charon
Mass (1020 kg)	893.3	479.7	1482	1076	735	17
Radius (km)	1,821.3	1565	2634	2403	1738	586
Mean Density (kg/m3)	3,530	2,990	1,940	1,851	3,340	1,800
Orbital Distance (103 km)	421.6	670.9	1070	1883	384.4	19.4
Orbital Period (days)	1.77	3.55	7.15	16.69	27.3	6.39

Other Useful Parameters

Material	Density
Air	1.2 kg/m3
Water or Ice	1000 kg/m3
Typical Rocks	3000 kg/m3
Metal at High Pressure	10,000 kg/m3