Planetary Fact Sheet – U.S. Units | AEROSPACE and ASTRONAUTICS

	MERCURY	VENUS	EARTH	MOON	MARS	JUPITER	SATURN	URANUS	NEPTUNE	PLUTO
Mass (10²¹tons)	0.364	5.37	6.58	0.081	0.708	2093	627	95.7	113	0.0144
Diameter (miles)	3032	7521	7926	2159	4221	88,846	74,897	31,763	30,775	1485
Density (lbs/ft³)	339	327	344	209	246	83	43	79	102	118
Gravity (ft/s²)	12.1	29.1	32.1	5.3	12.1	75.9	29.4	28.5	36.0	1.9
Escape Velocity (miles/s)	2.7	6.4	7.0	1.5	3.1	37.0	22.1	13.2	14.6	0.7
Rotation Period (hours)	1407.6	-5832.5	23.9	655.7	24.6	9.9	10.7	-17.2	16.1	-153.3
Length of Day (hours)	4222.6	2802.0	24.0	708.7	24.7	9.9	10.7	17.2	16.1	153.3
Distance from Sun (10⁶ miles)	36.0	67.2	93.0	0.239*	141.6	483.8	890.8	1784.8	2793.1	3647.2
Perihelion (10⁶ miles)	28.6	66.8	91.4	0.226*	128.4	460.1	840.4	1703.4	2761.6	2755.8
Aphelion (10⁶ miles)	43.4	67.7	94.5	0.252*	154.9	507.4	941.1	1866.4	2824.5	4538.7
Orbital Period (days)	88.0	224.7	365.2	27.3	687.0	4331	10,747	30,589	59,800	90,588
Orbital Velocity (miles/s)	29.4	21.8	18.5	0.64	15.0	8.1	6.0	4.2	3.4	2.9
Orbital Inclination (degrees)	7.0	3.4	0.0	5.1	1.9	1.3	2.5	0.8	1.8	17.2
Orbital Eccentricity	0.205	0.007	0.017	0.055	0.094	0.049	0.057	0.046	0.011	0.244
Axial Tilt (degrees)	0.01	177.4	23.4	6.7	25.2	3.1	26.7	97.8	28.3	122.5
Mean Temperature (F)	333	867	59	-4	-85	-166	-220	-320	-330	-375
Surface Pressure (atmospheres)	0	91	1	0	0.01	Unknown*	Unknown*	Unknown*	Unknown*	0
Number of Moons	0	0	1	0	2	67	62	27	14	5
Ring System?	No	No	No	No	No	Yes	Yes	Yes	Yes	No
Global Magnetic Field?	Yes	No	Yes	No	No	Yes	Yes	Yes	Yes	Unknown
	MERCURY	VENUS	EARTH	MOON	MARS	JUPITER	SATURN	URANUS	NEPTUNE	PLUTO