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PHOTO INDEX OF PRIMARY TARGETS ASTEROIDS COMETS EARTH JUPITER KUIPER BELT MARS MERCURY METEORITES NEPTUNE OORT CLOUD PLUTO SATURN SOLAR SYSTEM SPACE SUN URANUS VENUS ORDER PRINTS OTHER PHOTO INDEXES ALL TARGETS PHOTO CATEGORIES SCIENCEVIEWS AMPHIBIANS BIRDS BUGS FINE ART FOSSILS INDIAN INDIAN MAMMALS OTHER PARKS PLANTS RELIGIOUS REPTILES ROCKS & MINERALS SCIENCEVIEWS PRINTS

Obliquity of the Nine Planets Target Name:   Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune, Pluto Spacecraft:   Voyager, Viking, Mariner 10, Produced by:   Calvin J. Hamilton Copyright:  © 1999 Calvin J. Hamilton Date Released:  27 February 1999 (Publisher Permission Request) Related Document The Solar System Download Options Name Type Width x Height Size obliquity.jpg JPEG 1130 x 238 50K obliquity.jpg JPEG 9040 x 1900 914K obliquity.tif TIFF 9040 x 1900 4M This illustration shows the obliquity of the nine planets. Obliquity is the angle between a planet's equatorial plane and its orbital plane. By International Astronomical Union (IAU) convention, a planet's north pole lies above the ecliptic plane. By this convention, Venus, Uranus, and Pluto have a retrograde rotation, or a rotation that is in the opposite direction from the other planets. The following table lists the obliquity and rotation period of each of the planets. Obliquity Rotation Period (hrs) Mercury 0.1° 1407.5 Venus 177.4° 5832.5 Earth 23.45° 23.9345 Mars 25.19° 24.623 Jupiter 3.12° 9.925 Saturn 26.73° 10.656 Uranus 97.86° 17.24 Neptune 29.56° 16.11 Pluto 119.6° 153.29 This image is © copyright 1999 by Calvin J. Hamilton.

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