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The Jacana Astronomy Site |
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Planets - Planetary Periods and Motions |
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PLANETS - PLANETARY PERIODS AND MOTIONS Sidereal period Mean orbital Sidereal period Inclination of equator PLANET (days or years) velocity(km/sec of axial rotation to ecliptic(°) Mercury 87.969 d 47.87 58.646 d 0.01 Venus 224.701 d 35.02 243.019 d (R) 177.36 Earth 365.256 d 29.79 23.934 h 23.44 Mars 686.980 d 24.13 24.624 h 25.19 Jupiter 11.863 y 13.07 9.842 h 3.13 Saturn 29.447 y 9.67 10.233 h 26.73 Uranus 84.017 y 6.84 17.240 h (R) 97.86 Neptune 164.793 y 5.48 16.110 h 28.31 Pluto 247.920 y 4.75 6.387 d (R) 122.52 Source: Derek Haselden's Astronomical Charts & Tables
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