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Topic: Barycenter

Related Topics

Center of mass

Binary star

Lagrangian point

Barycentric coordinates

Tidal locking

Eclipsing binary

Mass

Orbital resonance

Roche lobe

Spaghettification

Roche limit

Perihelion

Brown dwarf

Equivalence principle

Cavendish experiment

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	Orbital speed - Wikipedia, the free encyclopedia (Site not responding. Last check: 2007-11-07)
		The transverse orbital speed is inversely proportional to the distance to the central body because of the law of conservation of angular momentum, or equivalently, Kepler's second law.
		This states that as a body moves around its orbit during a fixed amount of time, the line from the barycenter to the body sweeps a constant area of the orbital plane, regardless of which part of its orbit the body traces during that period of time.
		This means that the body moves faster near its periapsis than near its apoapsis, because at the smaller distance it needs to trace a greater arc to cover the same area.
	en.wikipedia.org /wiki/Avg._Orbital_Speed (534 words)

	Paradoxes Resolved, Origins Illuminated - My dilemma
		So the Earth-Moon barycenter (the point that orbits the Sun in an elliptical orbit) is located about 1000 miles inside the Earth, about 1/4 of the way to the center.
		The barycenter is a model that balances the two mass centers as one would do on a balance scale.
		I have some correspondents who attach physical significance to “barycenter”, and who derive things such as the centrifugal forces on various points on Earth’s surface due to their differing motions with respect to the Earth-Moon barycenter.
	www.metaresearch.org /msgboard/topic.asp?TOPIC_ID=63 (3041 words)

	wikien.info: Main_Page (Site not responding. Last check: 2007-11-07)
		In the case where one of the two objects is much larger and more massive than the other, the barycenter will be located within the larger object and rather than appearing to orbit it will simply be seen to "wobble" slightly.
		This is the case for the Moon and Earth, where the barycenter is located on average 4,671 km from Earth's center, well within the planet's radius of 6,378 km.
		When the two bodies are of similar masses (or at least the mass ratio is less extreme), however, the barycenter will be located outside of either of them and both bodies will follow an orbit around it.
	www.alanaditescili.net /index.php?title=Barycenter (220 words)

	TIDAL INFLUENCES & PERTURBATION
		The barycenter of the Earth-Moon system is located deep within the Earth, about 1,000 miles under the surface.
		The barycenter varies in depth due to the high eccentricity of the moon's orbit.
		Since the Earth is a dynamic and evolving body, the moon also influences the plastic condition of the Earth, contributing to keep it hot and liquid.
	www.geocities.com /syzygywjp/Tidal.html (803 words)

	United States Patent Application: 0040091147
		In other words, the barycenter of the color region of the ideal white light source is also set to 1/3.
		Thus, the coordinate values showing the barycenter of the color region are set to a new coordinate origin and the conversion is executed to the input image.
		Therefore, since the degrees of the chromaticity coordinate values of each pixel of the image data are not considered, even the image data obtained by photographing the object which is unbalanced in color arrangement can be converted into the image data obtained by photographing the object under the ideal white light source.
	appft1.uspto.gov /netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PG01&p=1&u=/netahtml/PTO/srchnum.html&r=1&f=G&l=50&s1="20040091147".PGNR.&OS=DN/20040091147&RS=DN/20040091147 (3609 words)

	Paradoxes Resolved, Origins Illuminated - gravity effects
		It is my opinion that the mass of the sun is not being pushed around a barycenter and the model requires this action.
		A barycenter is also a mathematical abstraction, and is not observable.
		Forces and barycenters are unnecessary, advanced concepts introduced for special purposes where they are useful.
	www.metaresearch.org /msgboard/topic.asp?TOPIC_ID=143 (3964 words)

	Sacramento Peak: Gravity (2) (Site not responding. Last check: 2007-11-07)
		The barycenter or center of mass of a system is the average of the positions of all objects in the system, each position weighted with the mass of the object.
		The position of the barycenter is not affected by the forces due to the masses in the system, so it is a convenient place relative to which to measure distances and velocities.
		The barycenter is an average of the positions of the two objects, so the directions from the barycenter to the two objects are exactly each other's opposite.
	www.sunspot.noao.edu /PR/answerbook/gravity-2.html (2507 words)

	The Moon and Earth in Space (Site not responding. Last check: 2007-11-07)
		It is not just the moon that is revolving about the earth but that the moon has enough mass to cause the earth, in turn, to move in a circular orbit.
		It can be shown that the distance of the center of each body from the barycenter is inversely proportional to their masses.
		The moon is about 236,000 miles in the opposite direction from the barycenter (dividing 2,900 by 236,000 shows the earth to have 81 times the mass of the moon).
	baby.indstate.edu /gga/gga_cart/gecar279.htm (200 words)

	R: function to make a barycenter plot from a level set tree
		Given a level set tree of some density estimate, plots a barycenter plot to the graphics window, with respect to the given coordinate.
		Barycenter plots visualize the locations of the modes of the estimate.
		The leftmost sibling is the one whose barycenter is furthest away from "crit".
	www.statlab.uni-heidelberg.de /users/klemela/denpro/man/plotbary.html (535 words)

	NOAA, Our Restless Tides, Explanation of Astronomical Factors, Tides and Tidal Currents
		The tide-raising forces at the earth's surface thus result from a combination of basic forces: (1) the force of gravitation exerted by the moon (and sun) upon the earth; and (2) centrifugal forces produced by the revolutions of the earth and moon (and earth and sun) around their common center-of-gravity (mass) or barycenter.
		The center of revolution of this motion of the earth and moon around their common center-of-mass lies at a point approximately 1,068 miles beneath the earth's surface, on the side toward the moon, and along a line connecting the individual centers-of-mass of the earth and moon.
		Since the individual centers-of-mass of the earth and moon remain in equilibrium at constant distances from the barycenter, the centrifugal force acting upon the center of the earth (C) as the result of their common revolutions must be equal and opposite to the gravitational force exerted by the moon on the center of the earth.
	www.co-ops.nos.noaa.gov /restles3.html (2030 words)

	Sunspot Predictions (Site not responding. Last check: 2007-11-07)
		The center of mass of the solar system -- its barycenter -- is slightly offset from the center of the sun.
		Because the sun is orbiting the Barycenter, the force of interaction between the core and envelope varies over the sunspot cycle.
		Rising points represent where the planets are pulling the sun away from barycenter, in essence inputting potential energy into the sun.
	www.grandunification.com /hypertext/SunspotPredictions.html (358 words)

	A Direct Test of the Lorentz Length Contraction (Site not responding. Last check: 2007-11-07)
		TDB represents a fixed offset from a hypothetical clock at the solar barycenter, the frame through which all observations are ultimately transformed.
		Once to convert the signal received on Earth to its frequency had it been received at solar barycenter, and again to determine the frequency shift received by the spacecraft due to its velocity with respect to solar barycenter.
		Whatever frequency is received, it is assumed to have experienced the time-dilation effects of equation (1) due to the spacecraft motion, and the presumed "measured" velocity of the craft is determined by solving the relativistic Doppler equation for velocity.
	renshaw.teleinc.com /papers/pionee2/pionee2.stm (2989 words)

	GBT LO Doppler tracking
		The JPL ephemeris is used to calculate the motion of the solar system barycenter and of the center of the sun (Heliocentric).
		In general the barycenter is preferred, since it is the best approximation to an inertial reference frame in the solar system vicinity.
		The velocity Vf of the specified frame with respect to the barycenter is taken from Table 1 ("J2000 Vector from Barycenter").
	www.gb.nrao.edu /~fghigo/gbtdoc/doppler.html (866 words)

	what is the cause of tides? - Page 2 - Bad Astronomy and Universe Today Forum
		The earth’s daily rotation on its axis, its ’monthly’ revolution on the earth-moon barycenter, and the annual revolution around the sun are the sources of those centrifugal forces.
		The earth is simultaneously involved in three distinct motions: daily rotation on its axis, ‘monthly’ orbiting of the moon-earth barycenter, and annual orbiting of the earth-moon-sun barycenter.
		That monthly orbit of the barycenter is independent of both the earth’s daily spin and annual solar orbit.
	www.bautforum.com /showthread.php?p=266574#post266574 (3978 words)

	Climate and Keplerian Planetary Dynamics (Site not responding. Last check: 2007-11-07)
		The barycenter of the Solar System as a whole varies, as the planet revolve, and their masses accumulate on one side, or the other (Figure 1).
		The barycenter for the system as a whole can be greater than one solar diameter outside the Sun, or can find itself in the center of the Sun.
		One has two relevant axis to consider: the barycenter, which is the axis of revolution of the planetary system as a whole, and the Sun's own spin axis.
	mitosyfraudes.8k.com /Calen2/Rhodes.html (3333 words)

	GETEPH
		The ecliptic coordinates (J2000) of the object with respect to the barycenter of the solar systerm at JD uncorrected for light travel time.
		The ecliptic coordinates (B1950) of the topocenter with respect to the barycenter.
		The ecliptic coordinates (J2000) of the topocenter with respect to the barycenter.
	www.lowell.edu /users/buie/idl/geteph.html (2008 words)

	Pluto (planet) - Open Encyclopedia (Site not responding. Last check: 2007-11-07)
		Pluto and Charon are noteworthy for being the only planet/moon pair in the solar system whose barycenter lies above the planet's surface.
		Note that some binary asteroids may also possess both of these traits, and that the Jupiter/Sun barycenter is above the Sun's surface, so neither is completely unique.
		The discovery of Charon allowed astronomers to determine the mass of the Pluto-Charon pair from their observed orbital period and separation, by a straightforward application of the laws of physics.
	open-encyclopedia.com /Pluto_(planet) (2445 words)

	Apply Barycenter Correction - CIAO 3.2
		The time system (time scale) is set to TDB and the time reference position is set to the barycenter; they are changed from TT and the Chandra position.
		Barycenter corrections can be anywhere between -500 and +500 seconds, depending on source position and time of year.
		This thread is now complete; all the events in the file have been barycenter corrected.
	cxc.harvard.edu /ciao/threads/axbary (727 words)

	AT THE GALACTIC CORE:
		The red vertical line is the 0 degree marker and the barycenter- (B).
		The reason for this is clear once one understands that the whole complex is in orbit around the main barycenter between itself and the much lager primary.
		Though the apparent distance relations to the barycenter would appear to change over time, they would keep the same ratio relationship, even if the secondary proved to be in a highly elliptical orbit.
	www.geocities.com /syzygywjp/GalacticComplexity.html (3498 words)

	Using the JPL Solar System Ephemeris
		The origin of the rectangular coordinates is at the solar system barycenter (center of mass) for the sun and all planets, except the earth.
		The solar system barycentric positions of the earth and moon may be derived from the ephemeris specifications of the position and velocity of the earth-moon barycenter and the geocentric position and velocity of the moon.
		The geometric timing correction is simply the speed of light divided into the distance from the observer to the solar system barycenter times the cosine of the angle between the observer-barycenter line and the direction to the pulsar.
	www.cv.nrao.edu /~rfisher/Ephemerides/ephem_use.html (2148 words)

	The Space Place :: What's a Barycenter?
		In the case of the Earth and the sun, both bodies actually revolve, or spin, around the very center of the mass (similar to center of gravity) between them.
		This point is called the "barycenter." Earth and the sun are "connected" by the gravity pulling them together.
		In the case of a planet the size of Jupiter, which is 318 times as massive as Earth, the barycenter of Jupiter and the sun is a bit further from the sun's center.
	spaceplace.jpl.nasa.gov /en/kids/barycntr.shtml (504 words)

	ICRS Narrative (Site not responding. Last check: 2007-11-07)
		The ICRS, with its origin at the solar system barycenter and "space fixed" axis directions, is meant to represent the most appropriate coordinate system for expressing reference data on the positions and motions of celestial objects.
		The ICRS is a set of specifications defining a high precision coordinate system with its origin at the solar system barycenter and "space fixed" (kinematically non-rotating) axes.
		The specifications include a metric tensor, a prescription for establishing and maintaining the axis directions, a list of benchmark objects with precise coordinates for each one, and standard models and algorithms that allow these coordinates to be transformed into observable quantities for any location and time.
	aa.usno.navy.mil /faq/docs/ICRS_doc.html (4516 words)

	Archive of Astronomy Questions and Answers (Site not responding. Last check: 2007-11-07)
		The barycenter is located just outside the surface of the Sun, but its position in space changes depending on the locations of the planets.
		It turns out that the solar cycle period of about 11 years is similar to the orbital period of Jupiter, especially when the additional perturbations of the other planets are added to the barycenter motion.
		More work is being done on this 'coincidence' to see if there could be a physical reason for it beyond simply the coincidence in the two time scales.
	www.astronomycafe.net /qadir/q2927.html (157 words)

	Some Notes About the Solar System at MROB (Site not responding. Last check: 2007-11-07)
		The position of the Sun can very from the barycenter of the Solar System by as much as twice the Sun's radius in any direction, and most of the movement is due to Jupiter.
		Two tables were generated, one for solar system barycenter and one for the sun as the center.
		For example, consider the Earth's orbit with the Sun (not the barycenter) as the center, and look at the perturbation that would be caused by Jupiter.
	home.earthlink.net /~mrob/pub/planets.html (1717 words)

	aiSee: Crossing Reduction
		The default weights are barycenter weights [STM81], while mediancenter weights [GNV88] are sometimes more appropriate, especially if the average degree (number of edges) of nodes is small.
		weights are the combination of barycenter and mediancenter, where barycenter is considered first and mediancenter is only used for nodes whose barycenter weights are equal.
		weights are the combination of barycenter and mediancenter, where mediancenter is considered first.
	www.aisee.com /manual/unix/54.htm (273 words)

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