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Topic: Argument of the perihelion

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	NationMaster - Encyclopedia: Argument of the perihelion (Site not responding. Last check: 2007-10-10)
		The argument of the perihelion is one of the orbital elements describing the orbit of a planet.
		It is the angle from ascending node to perihelion (in the orbital plane).
		The argument of periapsis (ω) is the orbital element describing the angle between an orbiting body's ascending node (the point where the body crosses the plane of reference from South to North) and its periapsis (the point of closest approach to the central body), measured in the orbital plane and in the direction of motion.
	www.nationmaster.com /encyclopedia/Argument-of-the-perihelion (337 words)

	Argument of the perihelion
		The argument of periapsis (Ï) is the orbital element describing the angle of an orbiting body's periapsis (the point of closest approach to the central body), relative to its ascending node (the point where the body crosses the plane of reference from South to North).
		An argument of periapsis of 0Â° means that the orbiting body will be at its closest approach to the central body at the same moment that it crosses the plane of reference from South to North.
		An argument of periapsis of 90Â° means that the orbiting body will reach periapsis at its northmost distance from the plane of reference.
	www.algebra.com /algebra/about/history/Argument-of-the-perihelion.wikipedia (349 words)

	Argument of the perihelion - Biocrawler (Site not responding. Last check: 2007-10-10)
		The argument of the perihelion is one of the orbital elements describing a body in a Sun-centered orbit (e.g., a planet).
		It is the angle between the ascending node and the perihelion, measured in the orbital plane.
		An argument of perihelion of 0° means that the body will be at perihelion right when it crosses the ecliptic from South to North.
	www.biocrawler.com /encyclopedia/Argument_of_Perihelion (131 words)

	Orbital Elements and Astronomical Terms
		perigee (or perihelion for sun orbiting satellites), measured counter clockwise along the plane of the orbit.
		It is equal to the sum of the Argument of Perigee and the Longitude of the Ascending Node (W + w in figure 2).
		True Anomaly) The angle that a satellite would have moved since last passing perigee (or perihelion), assuming that the satellite moved at a constant speed in a orbit on a circle of the same area as the actual orbital ellipse.
	www.physics.ncsu.edu /courses/astron/orbits.html (1242 words)

	Argument of periapsis - Wikipedia, the free encyclopedia
		The argument of periapsis (ω) is the orbital element describing the angle between an orbiting body's ascending node (the point where the body crosses the plane of reference from South to North) and its periapsis (the point of closest approach to the central body), measured in the orbital plane and in the direction of motion.
		Adding the argument of periapsis to the longitude of the ascending node gives the longitude of the periapsis.
		In the case of equatorial orbits, though the argument is strictly undefined, it is often assumed that:
	en.wikipedia.org /wiki/Argument_of_the_perihelion (262 words)

	Inserting Transpluto into Astrolog 5.4 and Astrolog32 1.10
		The argument of the perihelion is the angle from the ascending node to the perihelion (the point of the orbit closest to the sun), measured along the plane of the orbit.
		In this case, because the longitude of the ascending node is taken to be 0, the argument of the perihelion is the same as the longitude of the perihelion.
		Assuming that the perihelion of Transpluto's orbit is stationary with respect to the stars, we have to account for precession in the linear or second term of the argument of perihelion.
	mysite.verizon.net /bonniehill/pages.aux/astrology/astrolog/transpluto.html (2513 words)

	NationMaster - Encyclopedia: Periapsis (Site not responding. Last check: 2007-10-10)
		The most common are perigee and apogee, referring to earth orbits, and perihelion and aphelion, referring to orbits around the sun.
		After this the periapsis altitude began to descend, and final atmospheric entry of the orbiter was expected to occur in late 1992, around orbit 5000, nearly 14 years after orbit insertion.
		The argument of periapsis (4) is the argument (angular distance) of periapsis from the ascending node.
	www.nationmaster.com /encyclopedia/Periapsis (577 words)

	Planetary Positions
		(the longitude of the ascending node, the inclination and the argument of the perihelion respectively).
		This is the angle between the vernal equinox and the perihelion.
		The x-axis points in the direction of the perihelion, and the z-axis points perpendicular to the orbital plane (looking along z, the planet's orbit is clockwise) and the y-axis is perpendicular to the other two axes in a right-handed sense.
	www.met.reading.ac.uk /~ross/Documents/OrbitNotes.html (5100 words)

	Cosmos: The SAO Encyclopedia: Argument of Perihelion (Site not responding. Last check: 2007-10-10)
		The orientation of an elliptical orbit can be specified by three orbital elements: the inclination, the ascending node and the argument of perihelion.
		The perihelion is the point of closest approach between the orbiting body (e.g.
		For elliptical orbits around other celestial bodies, the argument of perihelion would be replaced by the argument of periastron (orbits around stars), argument of perigee (orbits around the Earth) or argument of periapsis (orbit around anything else!).
	cosmos.swin.edu.au /entries/argumentofperihelion/argumentofperihelion.html (233 words)

	Argument of the perihelion (Site not responding. Last check: 2007-10-10)
		The argument of the perihelion is one of the orbital elements describing the orbit of a planet.
		It is used to describe the longitude of the perihelion of the planet's orbit around the sun.
		It is the angle from ascending node to perihelion (in the orbital plane).
	www.askfactmaster.com /Argument_of_the_perihelion (67 words)

	Earth - New World Encyclopedia Preview
		Arguments used to support the latter view took into account some of the secondary effects of the Earth's shape and parallels with the shape of other planets.
		Even after the notion of a flat Earth had been discredited, a nineteenth-century organization called the Flat Earth Society advocated the belief that the Earth was disc-shaped, with the North Pole at its center and a 150-foot (50-meter) high wall of ice at the outer edge.
		In modern times, the Earth reaches its perihelion (when the planet is nearest to the Sun) about January 3, and its aphelion (when it is farthest from the Sun) about July 4.
	www.newworldencyclopedia.org /preview/Earth (4884 words)

	Frequently Asked Questions (FAQ)
		Keplerian elements are eccentricity, semimajor axis, mean anomaly, inclination, longitude of the ascending node, and argument of perihelion.
		Comet elements are eccentricity, perihelion distance, time of perihelion passage, inclination, longitude of the ascending node, and argument of perihelion.
		The point S represents the sun, P represents perihelion, i is the inclination, lower case omega (ω) is the argument of perihelion, and upper case omega (Ω) is the longitude of the ascending node.
	ssd.jpl.nasa.gov /?faq (1324 words)

	Planetary Positions
		(the longitude of the ascending node, the inclination and the argument of the perihelion respectively).
		This is the angle between the vernal equinox and the perihelion.
		The x-axis points in the direction of the perihelion, and the z-axis points perpendicular to the orbital plane (looking along z, the planet's orbit is clockwise) and the y-axis is perpendicular to the other two axes in a right-handed sense.
	www.met.rdg.ac.uk /~ross/Documents/OrbitNotes.html (5100 words)

	East Valley Astronomy Club - Virtual Beginner's Lab
		The Argument of Perihelion is defined as the angle (in the body's orbit plane) between the ascending node line and perihelion measured in the direction of the body's orbit.
		Perihelion is defined as the distance between the orbiting body and the sun at it's closest approach.
		The longitude of perihelion is defined as the sum of the longitude of the ascending node and the argument of perihelion.
	www.eastvalleyastronomy.org /vbeginnerlab.html (6837 words)

	Celestial Mechanics
		The inclination was 89.42064850°, longitude of ascending node 282.47215310°, and argument of perihelion 130.59561740.
		The orientation of the orbital plane is specified by the longitude of the ascending node, 58.86004°, and the inclination i = 162.24220°.
		Finally, the orientation of the orbit in its plane is given by the argument of perihelion, 111.8656°, measured from the ascending node in the direction of movement.
	www.du.edu /%7Ejcalvert/phys/orbits.htm (10768 words)

	Comets and the age of the solar system
		After that many perihelion passages it is doubtful that there would be any volatile material left in the nucleus.
		Since the perihelion distance remains constant, a decrease in total energy lowers the aphelion distance, and hence the orbital period as well.
		Another disturbing aspect of such statistically based arguments is that no one can clearly identify a single image as a comet nucleus.
	www.answersingenesis.org /docs/4108.asp (8195 words)

	Argument of periapsis - Medbib.com, the modern encyclopedia (Site not responding. Last check: 2007-10-10)
		Argument of periapsis - Medbib.com, the modern encyclopedia
		An argument of periapsis of 0° means that the orbiting body will be at its closest approach to the central body at the same moment that it crosses the plane of reference from South to North.
		An argument of periapsis of 90° means that the orbiting body will reach periapsis at its northmost distance from the plane of reference.
	www.medbib.com /Argument_of_Perihelion (230 words)

	Argument of the perihelion (Site not responding. Last check: 2007-10-10)
		The argument of the perihelion is one of the orbital elements describing a body in a Sun-centered orbit (e.g., a planet).
		It is the angle between the ascending node and the perihelion, measured in the orbital plane.
		An argument of perihelion of 0Â° means that the body will be at perihelion right when it crosses the ecliptic from South to North.
	regional.abcworld.net /Argument_of_the_perihelion.html (143 words)

	Transfer orbits for dummies! A hillbilly tutorial. - Official Prussian Blue Forums
		The angle, subtended at the sun, measured in the plane of the orbit in the direction of motion, from the perihelion to the point at which the orbiting object would be found, if it moved constantly by its average angular velocity.
		Yes, the argument of the perihelion of the proposed hyperbolic transfer orbit is zero.
		Hence, the argument of the perihelion, for this orbit, is zero.
	www.officialprussianblue.net /showthread.php?t=59 (3348 words)

	Spartanburg SC \| GoUpstate.com \| Spartanburg Herald-Journal (Site not responding. Last check: 2007-10-10)
		At the urging of Tullio Levi-Civita, Einstein began by exploring the use of general covariance (which is essentially the use of curvature tensors) to create a gravitational theory.
		However, in 1913 Einstein abandoned that approach, arguing that it is inconsistent based on the "hole argument".
		The perihelion precession of Mercury was the first evidence that general relativity is correct.
	www.goupstate.com /apps/pbcs.dll/section?category=NEWS&template=wiki&text=History_of_general_relativity (1110 words)

	The Tropical and the Anomalistic Year
		It travels faster while it is closer to the Sun (near the perihelion of of its ellipse) and slower while it is farther from the Sun (near the aphelion of its ellipse).
		Because the ellipse or anomaly governs the dynamics of the Earth's motion around the Sun, the mean anomalistic year will necessarily be the same wherever in the ellipse or anomalistic period we begin timing this kind of year.
		* This argument is not logically dependent upon Kepler's demonstration of a sun-centered dynamics nor upon his discovery that planetary orbits are elliptical in shape.
	www.hermetic.ch /cal_stud/cassidy/tropanom.htm (848 words)

	OrbitViewer (english)
		In general, orbital elements of comets are represented by six parameters: time of perihelion passage (T), eccentricity (e), perihelion distance (q), argument of perihelion (omega), ascending node (Omega) and inclination (i).
		Argument of perihelion, ascending node and inclination have its equinox.
		In general, orbital elements of asteroiods are represented by seven parameters: epoch, mean anomaly (M), eccentricity (e), semi-major axis (a), argument of perihelion (omega), ascending node (Omega) and inclination (i).
	www.astroarts.co.jp /products/orbitviewer/index.html (419 words)

	Application of the FMA to the sample of Saturn Trojans
		The basic frequencies that appear in the spectra of Trojan osculating elements are the libration of the critical argument
		The libration period of the critical argument is of the order of 800 years, which is short as compared to the circulation period of
		The critical argument, on the other hand, has a more complex behavior since its oscillation is not symmetric around the Lagrangian points.
	www.wsu.edu /~tricaric/phd_thesis_tricarico/node46.html (455 words)

	[No title] (Site not responding. Last check: 2007-10-10)
		6) The proper frequencies g-s (argument of perihelion) g (longitude of perihelion) s (longitude of the node) In case of symmetric libration the libration frequencies lf is given together with s.
		Besides there are the values of perihelion argument at Earth crossing and a flag that says if the crossing is at ascending or descending node.
		All the informations in the next two files can be extracted from the file catalog.tot; these are 2 flat files that can be easily used to employ the data relative to proper elements and proper frequencies (first file) and relative to encounter conditions (second file).
	newton.dm.unipi.it /neodys/propneo/readme (210 words)

	Cosmos: The SAO Encyclopedia: Ascending Node (Site not responding. Last check: 2007-10-10)
		The ascending node is usually quoted as the angular position at which a celestial body passes from the southern side of a reference plane to the northern side, hence 'ascending'.
		The descending node is located 180 degrees (half-way) further around the orbit.
		See also: Argument Of Perihelion, Descending Node, Orbital Elements, Orbital Inclination, and Semi-major Axis.
	cosmos.swin.edu.au /entries/ascendingnode/ascendingnode.html (306 words)

	Peak Oil News & Message Boards Forums >> Post 24566 >> Matching up transit times. (Site not responding. Last check: 2007-10-10)
		The angle, subtended at the sun, measured in the plane of the orbit in the direction of motion, from the perihelion to the point at which the orbiting object would be found, if it moved constantly by its average angular velocity.
		Yes, the argument of the perihelion of the proposed hyperbolic transfer orbit is zero.
		Hence, the argument of the perihelion, for this orbit, is zero.
	www.peakoil.com /post24566.html (4656 words)

	ALICE: 46P/Wirtanen
		Periodic comet Wirtanen was discovered in 1948 by Carl Wirtanen of Lick Observatory in the course of a stellar proper motion survey.
		The plate on which the discovery was made was taken on 1948 January 15, about a month and a half after the comet had passed perihelion, at which time it was about 16th magnitude.
		Long-term integrations show that, other than during the current period, the perihelion distance is typically between 1.5 AU and 2 AU from the 17th through the 24th century.
	www.ss.astro.umd.edu /ALICE/gen/wirtanen.html (659 words)

	OrbitViewer (english)
		In general, orbital elements of comets are represented by six parameters: time of perihelion passage (T), eccentricity (e), perihelion distance (q), argument of perihelion (omega), ascending node (Omega) and inclination (i).
		Argument of perihelion, ascending node and inclination have its equinox.
		In general, orbital elements of asteroiods are represented by seven parameters: epoch, mean anomaly (M), eccentricity (e), semi-major axis (a), argument of perihelion (omega), ascending node (Omega) and inclination (i).
	www.astroarts.com /products/orbitviewer/index.html (419 words)

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