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Earth comparison table

Subject	has age	has precession	has orbital period	is an instance of	has polar radiu	has effective temperature	has mean density	has rotation period	has eccentricity	has albedo	has been observ	has obliquity	has atmosphere density	has perihelion distance	has core temperature	has atmospheric pressure	has mean distance from Sun	has ecliptic inclination	has atmosphere composition	has surface gravity	has orbital velocity	has composition	is a kind of	has apparent magnitude	has material	has mass	has equatorial radiu	has core density	has relativistic advance of perihelion	has magnetic field at surface	has aphelion distance	has motion relative to star	has definition	has escape velocity	has magnetic field in core
naked eye planet											for many centuries											various elements	planet	brighter than 5		greater than Pluto's mass and less massive than ten times Jupiter's mass						epicycloidal	a planet in our solar system visible to the unaided eye
terrestrial planet																						mostly made of heavier non-volatile elements	planet		silicates, oxides, water	greater than Pluto's mass and less massive than ten times Jupiter's mass							A planet having a compact rocky surface like Earth
Earth	4.6 ± 0.1 × 109 years	50'.256 per year	365.2564 days	naked eye planet	6356.9 km	287 K	5.517 g cm-3	23 hours 56 minutes 4.1 seconds	e = 0.0167	0.39 (water and land about 0.2; snow and clouds about 0.8)	for many centuries	23°26'34" (in 1973)	1.3 × 10-3 g cm-3 (at sea level)	147100000 km in early January	6400 K	1.013 × 106 dyn cm-2 (at sea level)	149598500 km	i = 0	78% N2; 20.9% O2; 0.9% Ar, 0.03% C02 (by volume)	980 cm s-2	vorb = 29.78 km s-1	mostly made of heavier non-volatile elements		brighter than 5	silicates, oxides, water	5.977 × 1027 g	6378.17 km	10 g cm-3	4'.6 per century	0.5 gauss	152100000 km	epicycloidal	Third planet from the Sun. First forms of life appeared about 3.2 to 3.5 × 109 years ago (Homo sapiens appeared as a species about 105 years ago).	Vesc = 11.19 km s-1	100 gauss

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