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	Inferior and superior planets - Wikipedia, the free encyclopedia
		The terms "inferior planet" and "superior planet" were coined by Copernicus to distinguish a planet's orbit's size in relation to the Earth's.
		"Inferior planet" is used in reference to Mercury and Venus, which are closer to the Sun than the Earth is.
		"Superior planet" is used in reference to Mars, Jupiter, and Saturn, Uranus, Neptune, and Pluto, which are farther from the Sun than the Earth is.
	en.wikipedia.org /wiki/Inferior_planet (121 words)

	Inferior and superior planets
		The terms "inferior planet" and "superior planet" were coined by Copernicus to distinguish a planet's orbit's size; in relation to Terra.
		"Inferior planet" is generally used in reference to Mercury and Venus; although it can be used to refer to any planet with a smaller orbit than some planet, X.
		"Superior planet" is generally used in reference to Mars, Jupiter, and Saturn, Uranus, Neptune, and Pluto; although, it can be used to refer to any planet with a larger orbit than some planet, X.
	www.ebroadcast.com.au /lookup/encyclopedia/in/Inferior_planet.html (163 words)

	Astronomy Answers: Planetary Phenomena (Site not responding. Last check: 2007-08-19)
		Inferior planets have two separate conjunctions each synodical period: an inferior conjunction (always close to perigee) when they pass between the Sun and the Earth, and a superior conjunction (always close to apogee) when they pass behind the Sun.
		Inferior conjunctions of inferior planets are interesting in exceptional cases, namely when such a planet moves across the disk of the Sun, as seen from Earth.
		A superior planet is in opposition to the Sun if the difference between the geocentric ecliptical longitude of the planet and of the Sun is closest to 180 degrees, so it is less just before and just after that moment.
	www.astro.uu.nl /~strous/AA/en/verschijnselen.html (1674 words)

	Triple Conjunction - Wikipedia, the free encyclopedia
		A triple conjunction is an astronomical event, where two planets or a planet and a star meet each other three times in a short period either in opposition or at the time of inferior conjunction, if an inferior planet is involved.
		The visible movement of the planet or the planets in the sky is therefore normally prograde at the first conjunction, retrograde at the second conjunction and again prograde at the third conjunction.
		Triple conjunctions between the inferior planets Mercury and Venus and the superior planets Jupiter, Saturn, Uranus, Neptune, Pluto or with stars take place when these objects are at the same time in conjunction to sun while Mercury or Venus are at inferior conjunction.
	en.wikipedia.org /wiki/Triple_Conjunction (923 words)

	Inferior and superior planets (Site not responding. Last check: 2007-08-19)
		The terms " inferior planet " and " superior planet " were coined by Copernicus to distinguish a planet 's orbit 's size in relation to the Earth 's.
		"Superior planet" is used in reference to Mars, Jupiter, and Saturn, Uranus, Neptune, and Pluto, which are farther from the Sun than the Earth is. The terms are sometimes used more generally: for instance, the Earth is an inferior planet as seen from Mars.
		Planet Quest: Missions - Terrestrial Planet Finder Will study all aspects of planets outside the solar system from their formation and development to the presence and features of those planets orbiting the nearest stars.
	www.serebella.com /encyclopedia/article-Inferior_and_superior_planets.html (465 words)

	* Inferior planets - (Astrology): Definition
		Inferior Planets - Planets orbiting between the Earth and the Sun (Moon, Mercury and Venus and the postulated Vulcan).
		The orbits of the superior planets, Pluto, Neptune, Uranus, Saturn, Jupiter and Mars lie beyond that of the Earth from the Sun...
		Inferior PlanetsPlanets orbiting between the Earth and the Sun (Mercury and Venus and the postulated Vulcan)...
	en.mimi.hu /astrology/inferior_planets.html (292 words)

	Glossary for planets (Site not responding. Last check: 2007-08-19)
		Inferior conjuction - The planet passes between the earth and the sun, so is invisible, except in very rare cases when it passes in transit across the sun.
		A superior planet always shows a more or less full phase, at quadrature the greatest departure from full phase occurs, and in the case of Mars a very appreciable gibbous phase can be seen.
		In theory for all planets with an appreciable tilt of the rotation axis relative to the normal of its orbital plane, we have the following four terms, which, however, are normally used only for the earth and occasionally for Mars, and govern the seasons.
	pegasus.as.arizona.edu /~csharp/planetexp.html (627 words)

	inferior - definition by dict.die.net
		Inferior court (Law), a court subject to the jurisdiction of another court known as the superior, or higher, court.
		Inferior letter, Inferior figure (Print.), a small letter or figure standing at the bottom of the line (opposed to superior letter or figure), as in A_2, B_n, 2 and n are inferior characters.
		Inferior tide, the tide corresponding to the moon's transit of the meridian, when below the horizon.
	dict.die.net /inferior (243 words)

	* Superior planets - (Astrology): Definition
		The superior planets - that is, Saturn, Uranus, Neptune and Pluto - are at a transpersonal level in contrast to the soul triad where the self of the Sun permits free choice.
		The Major or Superior planets are those that have orbits larger than that of the Earth, and which lie at a greater distance from the Sun...
		superior planets the planets,,,, and are called superior planets because their orbits are farther from the than orbit...
	www.mimihu.com /astrology/superior_planets.html (330 words)

	* Superior planets - (Astronomy): Definition
		Mars, Jupiter, Saturn, Uranus, Neptune, and Pluto are superior planets.
		Opposition of the moon or planets is often determined in reference to the sun.
		superior planets The planets Mars, Jupiter, Saturn, Uranus, Neptune and Pluto are superior planets because their orbits are farther from the Sun than Earth's orbit.
	www.mimihu.com /astronomy/superior_planets.html (216 words)

	Voyage 8
		Because the planet is closest to the Earth, at opposition, it is at its brightest.
		At western quadrature and eastern quadrature, a superior planet is 90 degree west or east of the Sun, respectively, and exhibits a gibbous phase.
		For an inferior planet the synodic period can be defined as the time between two inferior conjunctions and for a superior planet, as the time between two oppositions.
	www.physics.emich.edu /jwooley/chapter8/Chapter8.html (1737 words)

	The Nine Planets Glossary
		An inferior planet is said to be "in inferior conjunction" when it is directly between the Earth and the Sun.
		the inclination of a planet's orbit is the angle between the plane of its orbit and the ecliptic; the inclination of a moon's orbit is the angle between the plane of its orbit and the plane of its primary's equator.
		A superior planet is said to be "in opposition" when it is directly on the opposite side of the Earth from the Sun.
	seds.lpl.arizona.edu /nineplanets/nineplanets/help.html (4842 words)

	vik dhillon: phy105 - celestial mechanics - ptolemy, copernicus and galileo
		Full phase, when the entire sunlit hemisphere of a planet is visible from the Earth, occurs when a planet is in opposition and so can only ever be observed on a superior planet (the inferior planets at superior conjunction also show a full phase, but this is lost in the glare of the Sun).
		When the Earth and another planet pass each other on the same side of the Sun, the planet appears to retrace its path for a short while (which is known as retrograde motion) and then continue in its original direction (which is known as prograde motion).
		For an inferior planet, the Earth is a superior planet, and so we interchange E and P to arrive at Copernicus' result.
	shef.ac.uk /physics/people/vdhillon/teaching/phy105/phy105_ptolemy.html (1302 words)

	Basics of Space Flight Section I. The Environment of Space
		Because they formed from the same rotating disk, the planets, most of their satellites, and the asteroids, all revolve around the sun in the same direction as it rotates, and in nearly circular orbits.
		The planets orbit the sun in or near the same plane, called the ecliptic (because it is where eclipses occur).
		Satellites of the planets, comets, asteroids, meteoroids, and the interplanetary medium constitute the remaining 0.015%.
	www2.jpl.nasa.gov /basics/bsf1-1.html (1978 words)

	[No title]
		superior planets: Mars, Jupiter, Saturn 1.) sidereal longitude not tied to that of sun 2.) varying sidereal periods: approx.
		Note that the sidereal periods for the inferior planets are the same as that of the sun 2.
		note that for the superior planets, the sum of the number of cycles of anomaly and the number of revolutions of longitude equals the number of solar years required for these periodicities III.
	www.iit.edu /~schmaus/Philosophy_of_Science/lectures/science/Copernicus.txt (734 words)

	Encyclopedia: Inferior and superior planets
		A planet in common parlance is a large object in orbit around a star that is not a star itself.
		Earth, also known as the Earth, Terra, and (mostly in the 19th century) Tellus, is the third-closest planet to the Sun.
		Mars is the fourth planet from the Sun in the solar system, named after the Roman god of war (the counterpart of the Greek Ares), on account of its blood red color as viewed in the night sky.
	www.nationmaster.com /encyclopedia/Inferior-and-superior-planets (349 words)

	Definition of "inferior planet" (Site not responding. Last check: 2007-08-19)
		All the other major planets, and the majority of the minor planets are superior planets.
		Inferior planets orbit the Sun faster than the Earth, and experience inferior conjunctions and superior conjunctions, but never oppositions.
		The best time for observing an inferior planet is when it is at its greatest elongation from the Sun.
	www.heavens-above.com /gloss.asp?lat=0&lng=0&alt=0&loc=Unspecified&TZ=CET&term=inferior+planet (95 words)

	Classification of the Planets
		The planets outside the orbit of the earth are called the Superior Planets: Mars, Jupiter, Saturn, Uranus, Neptune, and Pluto.
		The planets inside the asteroid belt are termed the Inner Planets (or the Terrestrial Planets): Mercury, Venus, Earth, and Mars.
		The term "planet" originally meant "wanderer": it was observed long ago that certain points of light wandered (changed their position) with respect to the background stars in the sky.
	csep10.phys.utk.edu /astr161/lect/classification/classification.html (498 words)

	The Solar System--2 (Site not responding. Last check: 2007-08-19)
		The ratios of mass for the terrestrial planets with respect to Earth (100%) is: Venus, 82%; Mars, 11%; and Mercury, 5%.
		Mercury and Venus are referred to as inferior planets because their orbits are closer to the sun than is Earth's orbit.
		Superior planets can be seen as crescents only from the vantage point of a spacecraft that is beyond them.
	www.au.af.mil /au/awc/awcgate/jplbasic/bsf1-2.htm (1061 words)

	UVic A120 - Apparent Positions of the Planets (Site not responding. Last check: 2007-08-19)
		Describe and compare qualitatively the motions of the inferior and superior planets in the sky.
		The altitude h of a celestial object is the angle between the horizon and the object as measured from the observer.
		If U is the sidereal orbital period of a planet and J the sidereal orbital period of the earth, derive a formula for the synodic period S of the planet.
	astrowww.phys.uvic.ca /courses/a120/app_pos.html (375 words)

	Ast 110: Class 10
		All planets and the Sun moved on circular Deferents nearly centered on the Earth, the planets actually moving on Epicycles `attached' to the deferents.
		The epicycles of Venus and Mercury were constrained to lie on a straight line between the Earth and the Sun to preserve the known behaviour of inferior planets.
		It gave the correct explanations of the behaviour of inferior planets and retrograde motion as effects of relative position and speed of orbital motion as viewed from a moving Earth, but it wasn't much more accurate than the Ptolemaic system in practice.
	www.ifa.hawaii.edu /faculty/acowie/class99/class_10.html (703 words)

	An Overview of the Solar System
		The orbits of the planets are ellipses with the Sun at one focus, though all except Mercury and Pluto are very nearly circular.
		With a few exceptions, the planetary satellites orbit in the same sense as the planets and approximately in the plane of the ecliptic but this is not generally true for comets and asteroids.
		The gas planets are composed primarily of hydrogen and helium and generally have low densities, rapid rotation, deep atmospheres, rings and lots of satellites.
	seds.lpl.arizona.edu /nineplanets/nineplanets/overview.html (1331 words)

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