
	Where results make sense

Topic: Parabolic orbit

Related Topics

Hyperbolic trajectory

Orbital equation

Capture orbit

Orbit

Escape Speed

Rocket equation

Spaceflight

Integral

October 3

In the News (Tue 7 Oct 08)

Breast Cancer

Golden Circle

Keating Five

Stephen Harper

Eli Lilly

Nobel Prize

Eli Manning

Josh Beckett

Sage Rosenfels

South Ossetia

	Orbit - LoveToKnow 1911
		Elliptic orbits, and a parabolic orbit considered as the special case when the eccentricity of the ellipse is 1, are almost the only ones the astronomer has to consider, and our attention will therefore be confined to them in the present article.
		Let the curve represent an elliptic orbit, AB being the major axis, DE the minor axis, and F the focus in which the centre of attraction is situated, which centre we shall call the sun.
		The problem of determining an orbit may be regarded as coeval with Hipparchus, who, it is supposed, found the moving positions of the apogee and perigee of the moon's orbit.
	www.1911encyclopedia.org /Orbit (1538 words)

	Parabolic trajectory - Wikipedia, the free encyclopedia
		In astrodynamics or celestial mechanics a parabolic trajectory is an orbit with the eccentricity equal to 1.
		When moving away from the source it is called an escape orbit, otherwise a capture orbit.
		is orbital velocity of a body in circular orbit.
	en.wikipedia.org /wiki/Parabolic_orbit (276 words)

	Orbits
		An elliptical orbit is described by several parameters: the length of its semimajor axis, its eccentricity, its inclination, its period, the location of its nodes, and the location of its apsides.
		The length of the orbit’s semimajor axis is the average distance from the planet to its primary.
		The inclination of an orbit is the angle between the plane of the orbit and a reference plane.
	library.thinkquest.org /29033/begin/orbits.htm (1054 words)

	Orbit equation - Wikipedia, the free encyclopedia
		Under standard assumptions, a body moving under the influence of a force, directed to a central body, with a magnitude inversely proportional to the square of the distance (such as gravity), has an orbit that is a conic section (i.e.
		This should be distinguished from the parabolic orbit in the sense of astrodynamics, where the velocity is the escape velocity.
		Extending this to orbits which are horizontal at another height, and orbits of which the extrapolation is horizontal below the surface of the Earth, we get a categorization of all orbits, except the radial trajectories, for which, by the way, the orbit equation can not be used.
	en.wikipedia.org /wiki/Orbit_equation (833 words)

	Free Orbit (Site not responding. Last check: 2007-10-17)
		In accordance with the laws of gravitational movement, a focal point of the orbit (the center in the case of a circle) must always coincide with the center of mass (center of gravitaty) of the orbiting celestial body.
		As a result of the centrifugal force generated during the orbit, the effect of the sun's gravity on the Earth is offset and, therefore, we perceive nothing of its existence.
		Because of this, the counteracting centrifugal force and consequently the orbiting velocity must be correspondingly greater (because the centrifugal force increases with the square of the orbiting velocity).
	www.hq.nasa.gov /office/pao/History/SP-4026/noord3.html (453 words)

	Orbit equation
		circular orbit, elliptic orbit, parabolic trajectory, hyperbolic trajectory) with the central body located at one of the two foci, or the focus (Kepler's first law).
		This should be distinguished from the parabolic orbit in the sense of astrodynamics, where the velocity is the escape velocity.
		Extending this to orbits which are horizontal at another height, and orbits of which the extrapolation is horizontal below the surface of the Earth, we get a categorization of all orbits, except the radial trajectories, for which, by the way, the orbit equation can not be used.
	encyclopedia.vestigatio.com /Orbit_equation (848 words)

	Highbeam Encyclopedia - Search Results for Parabolic
		The Gothic fantasia of the War Memorial Church in Neu-Ulm (1923) and the simple parabolic vaulting of the church at...
		The path is usually a closed one about the focus of the system to which it belongs, as with those of the planets around the Sun.
		It is rare for an orbit to be...
	www.encyclopedia.com /SearchResults.aspx?Q=Parabolic&StartAt=11 (467 words)

	Global Space Initiative (Site not responding. Last check: 2007-10-17)
		At the beginning of each iteration, the orbiting body is regarded as having a momentary position and velocity, and the gravitational force, acting upon it, is calculated from its mass, the central body's mass, and the distance between these bodies.
		If the graph does not show the orbit as expected, or at all, this may be because the scaling of the graph axes has resulted in the orbit's being outside the display range.
		If, for example, you are trying to generate a parabolic orbit, and you see only half a parabola, it may be because you have defined the True Anomaly as being zero, which is at periapsis; so, all you see is the orbit after periapsis.
	orbiter.vidmar.org /orbit-simulation.php (810 words)

	Astronomy Answers: Space Travel with Gravity
		Both bodies follow an orbit of the same shape (for example, for both an ellipse with the same ratio of length to width), of which the size is inversely proportional to the mass of the body.
		A Hohmann orbit is an elliptical orbit of which the periapsis lies on the orbit of the one planet and the apoapsis on the orbit of the other planet.
		The red orbit was chosen such that the appropriate asymptote (the fl line) of that orbit touches the blue orbit in the intersection D of the asymptote (blue) and the planet's orbit (yellow).
	www.astro.uu.nl /~strous/AA/en/reken/zwaartekracht.html (6127 words)

	parabolic - Search Results - MSN Encarta (Site not responding. Last check: 2007-10-17)
		Parabolic Reflector, dish antenna having a concave reflective surface, used to reflect electromagnetic radiation for such purposes as telescopes and...
		Escape Velocity, minimum initial velocity required for an object to escape the gravitational attraction of an astronomical body, and to continue...
		An orbit has the shape of a conic section—a circle, ellipse, parabola, or hyperbola—with the central body at one focus of the curve.
	ca.encarta.msn.com /parabolic.html (120 words)

	parabolic - Search Results - MSN Encarta
		Parabolic Reflector, dish antenna having a concave reflective surface, used to reflect electromagnetic radiation for such purposes as telescopes and...
		Escape Velocity, minimum initial velocity required for an object to escape the gravitational attraction of an astronomical body, and to continue...
		An orbit has the shape of a conic section—a circle, ellipse, parabola, or hyperbola—with the central body at one focus of the curve.
	encarta.msn.com /parabolic.html (136 words)

	Dr. Dobb's \| Orbit Propagation \| April 15, 2003
		For orbit prediction, exact expressions are available for the solutions of objects moving in two-body or Keplerian motion, which involves modeling the motion of an object being accelerated only by the gravitational force from a second object.
		When you want to model the orbit motion precisely, you must use a numerical method, because orbiting objects are subject not only to the point-mass gravitational force, which produces their Keplerian motion, but also to a range of other forces that perturb or modify this motion.
		The eccentric anomaly E is defined (for elliptical orbits) by circumscribing a circle around the ellipse, then dropping a perpendicular from a point p on the circle so it passes through the current position of the object on the ellipse (see Figure 4).
	www.ddj.com /184402360?pgno=10 (2670 words)

	TRAJECTORIES AND ORBITS
		Orbit is commonly used in connection with natural bodies (planets, moons, etc.) and is often associated with paths that are more or less indefinitely extended or of a repetitive character, like the orbit of the Moon around the Earth.
		The parabolic orbit is the Borderline case between open and closed orbits and therefore identifies the border line condition between space vehicles that are tied to paths (elliptical) in the general vicinity of their parent planet and those that can take up paths (hyperbolic) extending to regions remote from their parent planet.
		The elliptical orbits generated by velocities below escape velocity are the type followed by artificial satellites, as well as by all the planets and moons of the solar system.
	www.hq.nasa.gov /office/pao/History/conghand/traject.htm (1856 words)

	Parabolic Orbit -- from Eric Weisstein's World of Physics
		An orbit with eccentricity e = 1 is parabolic.
		Parabolic orbits are therefore characterized by a quantity q defined by
		Circular Orbit, Elliptical Orbit, Hyperbolic Orbit, Orbit, Parabolic Orbit, Two-Body Problem
	scienceworld.wolfram.com /physics/ParabolicOrbit.html (81 words)

	Encyclopedia of the Solar System: Paul R. Weissman
		Angle between the plane of the or-bit of a planet, comet, or asteroid and the ecliptic plane, or between a satellite's orbit plane and the equatorial plane of its primary.
		Point in the orbit of a planet, comet, or asteroid that is closest to the Sun.
		Commonly taken to be the mean distance of the orbit of an object from its primary, though not precisely correct.
	www.apnet.com /refer/solar/Contents/chap1.htm (919 words)

	Columbia Encyclopedia- comet - AOL Research & Learn (Site not responding. Last check: 2007-10-17)
		A century later Giovanni Borelli concluded that the orbits were parabolic and that comets passed through the solar system but once, never to return.
		While some comets appear to have parabolic orbits (see parabola), others return to the inner solar system in highly elongated orbits with periods ranging from a hundred to thousands of years.
		Some of this material moves around the comet's orbit as a stream of meteoroids (see meteor); when the earth passes through this path, a meteor shower is observed.
	reference.aol.com /columbia/_a/comet/20051205222409990044 (1116 words)

	Orbits
		The squares of the periods of revolution are proportional to the cubes of the average distances of the planets from the Sun.
		The orbit of the Moon is especially complex because the pull of the Earth and that of the Sun are not too dissimilar.
		The calculation of their orbits and the path of the space probes is a complex adaptation of the theory as derived by Newton.
	www.oarval.org /orbits.htm (1203 words)

	Conic Orbits (Site not responding. Last check: 2007-10-17)
		The orbit of any body (be it a comet, planet, asteroid, or a space craft) about the Sun will have the same shape that one gets by the intersection of a plane with a cone.
		If the plane intersects the cone horizontally then the resulting orbits is that of a circle - a special case of an ellipse whose eccentricity is zero.
		The shape of the orbit is determined by the Gravitational Mechanical Energy of the orbiting body.
	www.ac.wwu.edu /~vawter/PhysicsNet/Topics/Gravity/ConicOrbits.html (226 words)

	SparkNotes: Orbits: Escape Velocity and Viscous Drag
		We also saw there that for a parabolic orbit the projectile has barely enough energy to reach infinity--that is, it arrives at infinity with no kinetic energy.
		Thus, the energy for a parabolic orbit is the minimum amount of energy we can give to a projectile such that it will escape from the gravitational field in which it is caught.
		In this lower orbit, the potential energy of the satellite is reduced, but since it has increased in speed, the kinetic energy has increased.
	www.sparknotes.com /physics/gravitation/orbits/section2.rhtml (625 words)

	Kepler's laws of planetary motion Summary
		The orbits of two bodies around their center of mass (barycenter) are conic sections (circles, ellipses, parabolas, or hyperbolae) with the center of mass at one focus of each conic section orbit.
		For parabolic orbit, the relative velocity of the two bodies at an infinite distance apart (infinity) will be zero, and for a hyperbolic orbit their relative velocity will be positive at infinity (they will recede from each other forever).
		The squares of the orbital periods of planets are directly proportional to the cubes of the semi-major axis of the orbits.
	www.bookrags.com /Kepler's_laws_of_planetary_motion (4879 words)

	SparkNotes: Orbits: Orbits
		The particle is trapped at the very bottom of a potential well, and the radius does not change as it goes around the orbit, hence forming a circle.
		Parabolic orbits occur when ε = 1, which means that E = 0.
		In the parabolic case the particle barely has enough energy to make it to infinity, but the hyperbolic orbit makes it with energy to spare.
	www.sparknotes.com /physics/gravitation/orbits/section1.html (628 words)

	[No title]
		The orbit is elliptical again, but this time the starting point is the perihelion - the point closest to the Sun.
		Case 5: v is larger by a factor of the square root of two than the speed needed to go in a circle.
		The orbit is hyperbolic - note that it's much straighter than the parabolic curve.
	physics.bu.edu /~duffy/semester1/c17_orbits.html (134 words)

	a Suggestion of giving addresses for space Objects
		when i say places i mean space places.for example: the location of a sattelite orbiting earth in a LEO in a certain time, and the address of your friend who lives on a certain street of a certain colony on Europe, a moom of Jupiter.
		lesser moons- are moons or infact asteroids which has been caught in orbit of other bigger space objects (even large space colonies...) there is small chance that those objects will be colonized or mined (from historical/romantical/political reasons) there is a good chance that they will be used as not-manned station or other minimal colonies.
		-there is no need to use the 2 moons of mars as space places or orbits as it looks that humanity will not mine those "semi asteroids" to preserve the history of mars as possible.
	members.tripod.com /z_e/crea/sug.html (1247 words)

	[No title]
		The inclination of the cometary orbit to the ecliptic—that is to say, on the plane which contains the curve of translation of the earth around the sun.
		It was obtained by calculating the longitude of the cornet's perihelion, and Palmyrin Rosette had thus the situation of the parabolic curve in the plane already determined.
		The perihelion distance of the comet;—that is to say, the distance which separated it from the sun when it passed nearest to it—a calculation which, in the end, gave exactly the form of the parabolic orbit, because it necessarily had the sun in its focus.
	memory.loc.gov /master/rbc/rbfr/2002/00250025.txt (2540 words)

	ESA Portal - Mars Express scientists find a different Mars underneath
		The best fit to the echo indicates that the orbit track is offset from the basin centre, thus the left/right ambiguity in the data does not allow a unique determination of the basin centre.
		The top left radargram was obtained thanks to MARSIS data on 9 July (orbit 1903), while the top right one was obtained thanks to data gathered on 6 July (orbit 1892).
		Parabolic echoes that project as arcs on the surface are interpreted to be from the near and far rim walls (relative to the orbit track) of buried impact basins.
	www.esa.int /esaCP/SEMQ4NPJNVE_index_1.html (652 words)

	Bluff
		Therefore, in determining the orbit of a comet, we must work on (inaccurate) data gained while it traced a tiny fraction of its immense orbit near enough to the Sun to be illuminated brilliantly, and visibly.
		The tiny fraction of its orbit near the Sun, a month, perhaps out of a million-year orbit, would in each case be almost exactly a parabola.
		No such comet has been observed; the only hyperbolic orbits detected have been traceable to the perturbation of a parabolic orbit due to the influence of a near-by planet's mass.
	jolomo.net /solarsystem/1937.09.html (3139 words)

	CloudSat - Education: FAQ
		This sun-synchronous orbit is nearly circular and is inclined with respect to the earth's equator at 98.2 degrees.
		The second kind of orbit is the parabolic orbit; a satellite on a parabolic orbit just barely escapes the earth's gravity with just enough energy to do so.
		Orbits with repeat groundtracks are useful in that once they are established the revisit the same geographic coordinates time after time.
	cloudsat.atmos.colostate.edu /education/faq (1476 words)

	NEAT discovers asteroid, comet
		The highly inclined orbit, which is unusual, may result from long-range interactions with the planets, or may be the outcome of previous orbits passing near Earth.
		With orbits that are smaller than Earth's, and short periods, Atens are in the vicinity of Earth frequently.
		Parabolic comets do not present their calling cards before arriving in the inner solar system.
	www.jpl.nasa.gov /releases/97/neatobs.html (893 words)

	Dictionary of Technical Terms for Aerospace Use - P (Site not responding. Last check: 2007-10-17)
		Perigee and apogee are used by some writers in referring to orbits of satellites, especially artificial satellites, around any planet or satellite, thus avoiding coinage of new terms for each planet and moon.
		The velocity profile across the cylinder is seen to be parabolic, and this relation affords a convenient experimental means of determining a fluid's viscosity.
		satellite or other body orbits, or from which it is escaping, or towards which it is falling.
	roland.lerc.nasa.gov /~dglover/dictionary/p.html (11606 words)

	D/1827 M1 (Pons-Gambart)
		His best orbit had a perihelion date of June 7.69 and a period of 63.83 years, with a likely uncertainty in the period of +/-10 years.
		A second orbit with a period of 46.0 years was calculated, but it did not fit the positions as well.
		He said the 1827 observations were best represented by an orbit with a perihelion date of June 7.64 and a period of 57.46 years, but suggested a probable error of +/-10 years.
	cometography.com /pcomets/1827m1.html (502 words)

Try your search on: Qwika (all wikis)