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physical object > natural object > celestial body > planet > naked eye planet > Earth
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Earth
subjectfact 
Earthhas precession 50'.256 per yearhas source: Hopkins, J. 1976 Glossary of Astronomy and Astrophysics, University of Chicago Press, 2001-09-27 09:31:56.0
has ecliptic inclination i = 0has source: Hopkins, J. 1976 Glossary of Astronomy and Astrophysics, University of Chicago Press, 2001-09-27 09:31:56.0
has aphelion distance 152100000 kmhas source: Hopkins, J. 1976 Glossary of Astronomy and Astrophysics, University of Chicago Press, 2001-09-27 09:31:56.0
has perihelion distance 147100000 km in early Januaryhas source: Hopkins, J. 1976 Glossary of Astronomy and Astrophysics, University of Chicago Press, 2001-09-27 09:31:56.0
has polar radius 6356.9 kmhas source: Hopkins, J. 1976 Glossary of Astronomy and Astrophysics, University of Chicago Press, 2001-09-27 09:31:56.0
is a part of our solar system2001-09-27 09:31:56.0
has atmospheric pressure 1.013 × 106 dyn cm-2 (at sea level)has source: Hopkins, J. 1976 Glossary of Astronomy and Astrophysics, University of Chicago Press, 2001-09-27 09:31:57.0
has obliquity 23°26'34" (in 1973)has source: Hopkins, J. 1976 Glossary of Astronomy and Astrophysics, University of Chicago Press, 2001-09-27 09:31:56.0
has atmosphere composition 78% N2; 20.9% O2; 0.9% Ar, 0.03% C02 (by volume)has source: Hopkins, J. 1976 Glossary of Astronomy and Astrophysics, University of Chicago Press, 2001-09-27 09:31:57.0
has relativistic advance of perihelion 4'.6 per centuryhas source: Hopkins, J. 1976 Glossary of Astronomy and Astrophysics, University of Chicago Press, 2001-09-27 09:31:56.0
has albedo 0.39 (water and land about 0.2; snow and clouds about 0.8)has source: Hopkins, J. 1976 Glossary of Astronomy and Astrophysics, University of Chicago Press, 2001-09-27 09:31:56.0
has rotation period 23 hours 56 minutes 4.1 secondshas source: Hopkins, J. 1976 Glossary of Astronomy and Astrophysics, University of Chicago Press, 2001-09-27 09:31:56.0
has orbital velocity vorb = 29.78 km s-1has source: Hopkins, J. 1976 Glossary of Astronomy and Astrophysics, University of Chicago Press, 2001-09-27 09:31:56.0
has equatorial radius 6378.17 kmhas source: Hopkins, J. 1976 Glossary of Astronomy and Astrophysics, University of Chicago Press, 2001-09-27 09:31:56.0
has mean distance from Sun 149598500 kmhas source: Hopkins, J. 1976 Glossary of Astronomy and Astrophysics, University of Chicago Press, 2001-09-27 09:31:56.0
has eccentricity e = 0.0167has source: Hopkins, J. 1976 Glossary of Astronomy and Astrophysics, University of Chicago Press, 2001-09-27 09:31:56.0
has age 4.6 ± 0.1 × 109 yearshas source: Hopkins, J. 1976 Glossary of Astronomy and Astrophysics, University of Chicago Press, 2001-09-27 09:31:57.0
has effective temperature 287 Khas source: Hopkins, J. 1976 Glossary of Astronomy and Astrophysics, University of Chicago Press, 2001-09-27 09:31:56.0
has surface gravity 980 cm s-2has source: Hopkins, J. 1976 Glossary of Astronomy and Astrophysics, University of Chicago Press, 2001-09-27 09:31:56.0
has escape velocity Vesc = 11.19 km s-1has source: Hopkins, J. 1976 Glossary of Astronomy and Astrophysics, University of Chicago Press, 2001-09-27 09:31:56.0
has mean density 5.517 g cm-3has source: Hopkins, J. 1976 Glossary of Astronomy and Astrophysics, University of Chicago Press, 2001-09-27 09:31:56.0
has orbital period 365.2564 dayshas source: Hopkins, J. 1976 Glossary of Astronomy and Astrophysics, University of Chicago Press, 2001-09-27 09:31:56.0
has mass 5.977 × 1027 ghas source: Hopkins, J. 1976 Glossary of Astronomy and Astrophysics, University of Chicago Press, 2001-09-27 09:31:56.0
has definition 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).has source: Hopkins, J. 1976 Glossary of Astronomy and Astrophysics, University of Chicago Press, 2001-09-27 09:31:56.0
is an instance of terrestrial planet2001-09-27 09:31:56.0
is an instance of naked eye planet2001-09-27 09:31:56.0
has magnetic field in core 100 gausshas source: Hopkins, J. 1976 Glossary of Astronomy and Astrophysics, University of Chicago Press, 2001-09-27 09:31:57.0
has magnetic field at surface 0.5 gausshas source: Hopkins, J. 1976 Glossary of Astronomy and Astrophysics, University of Chicago Press, 2001-09-27 09:31:57.0
has core density 10 g cm-3has source: Hopkins, J. 1976 Glossary of Astronomy and Astrophysics, University of Chicago Press, 2001-09-27 09:31:57.0
has core temperature 6400 Khas source: Hopkins, J. 1976 Glossary of Astronomy and Astrophysics, University of Chicago Press, 2001-09-27 09:31:57.0
has atmosphere density 1.3 × 10-3 g cm-3 (at sea level)has source: Hopkins, J. 1976 Glossary of Astronomy and Astrophysics, University of Chicago Press, 2001-09-27 09:31:57.0
naked eye planethas motion relative to stars epicycloidal2001-09-27 09:31:54.0
has been observed for many centuries2001-09-27 09:31:54.0
has apparent magnitude brighter than 52001-09-27 09:31:54.0
terrestrial planethas composition mostly made of heavier non-volatile elements2001-09-27 09:31:54.0
has material silicates, oxides, water2001-09-27 09:31:54.0
planetis a part of solar system2001-09-27 09:31:54.0
has orbit2001-09-27 09:31:54.0
celestial bodyhas spectra2001-09-27 09:30:09.0
physical objecthas location or center of gravity2001-09-27 09:27:27.0
has angular momentum2001-09-27 09:27:27.0
has velocity2001-09-27 09:27:27.0
has momentum2001-09-27 09:27:27.0
has temperature2001-09-27 09:27:27.0
has volume2001-09-27 09:27:27.0
has extent2001-09-27 09:27:27.0

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