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- Dynamical_parallax abstract "In astronomy, the distance to a visual binary star may be estimated from the masses of its two components, the size of their orbit, and the period of their orbit about one another. A dynamical parallax is an (annual) parallax which is computed from such an estimated distance.To calculate a dynamical parallax, the angular semi-major axis of the orbit of the stars is observed, as is their apparent brightness. By using Newton's generalisation of Kepler's Third Law, which states that the total mass of a binary system multiplied by the square of its orbital period is proportional to the cube of its semi-major axis, together with the mass-luminosity relation, the distance to the binary star can then be determined.With this technique, the masses of the two stars in a binary system are estimated, usually as the mass of the Sun. Then, using Kepler's laws of celestial mechanics, the distance between the stars is calculated. Once this distance is found, their distance from the observer can be found via the arc subtended in the sky, giving a preliminary distance measurement. From this measurement and the apparent magnitudes of both stars, the luminosities can be found, and from the mass–luminosity relationship, the masses of each star. These masses are used to re-calculate the separation distance, and the process is repeated. The process is iterated many times, and accuracies as high as 5% can be achieved. The mass–luminosity relationship can also be used to determine the lifetime of stars by noting that lifetime is approximately proportional to M/L. One finds that more massive stars live shorter lives. A more sophisticated calculation of lifetime factors in a star's loss of mass over time.".
- Dynamical_parallax wikiPageID "6008716".
- Dynamical_parallax wikiPageLength "3039".
- Dynamical_parallax wikiPageOutDegree "23".
- Dynamical_parallax wikiPageRevisionID "677716588".
- Dynamical_parallax wikiPageWikiLink Apparent_brightness.
- Dynamical_parallax wikiPageWikiLink Apparent_magnitude.
- Dynamical_parallax wikiPageWikiLink Astronomy.
- Dynamical_parallax wikiPageWikiLink Category:Astrometry.
- Dynamical_parallax wikiPageWikiLink Category:Binary_stars.
- Dynamical_parallax wikiPageWikiLink Celestial_mechanics.
- Dynamical_parallax wikiPageWikiLink Cube_(algebra).
- Dynamical_parallax wikiPageWikiLink Cube_(arithmetic).
- Dynamical_parallax wikiPageWikiLink Distance.
- Dynamical_parallax wikiPageWikiLink Isaac_Newton.
- Dynamical_parallax wikiPageWikiLink Johannes_Kepler.
- Dynamical_parallax wikiPageWikiLink Keplers_laws.
- Dynamical_parallax wikiPageWikiLink Keplers_laws_of_planetary_motion.
- Dynamical_parallax wikiPageWikiLink Keplers_third_law.
- Dynamical_parallax wikiPageWikiLink Mass.
- Dynamical_parallax wikiPageWikiLink Mass-luminosity_relation.
- Dynamical_parallax wikiPageWikiLink Mass–luminosity_relation.
- Dynamical_parallax wikiPageWikiLink Orbit.
- Dynamical_parallax wikiPageWikiLink Orbital_period.
- Dynamical_parallax wikiPageWikiLink Parallax.
- Dynamical_parallax wikiPageWikiLink Photometric_parallax_method.
- Dynamical_parallax wikiPageWikiLink Semi-major_axis.
- Dynamical_parallax wikiPageWikiLink Spectroscopic_parallax.
- Dynamical_parallax wikiPageWikiLink Square_(algebra).
- Dynamical_parallax wikiPageWikiLink Visual_binary.
- Dynamical_parallax wikiPageWikiLinkText "Dynamical parallax".
- Dynamical_parallax wikiPageWikiLinkText "dynamical parallax".
- Dynamical_parallax hasPhotoCollection Dynamical_parallax.
- Dynamical_parallax wikiPageUsesTemplate Template:Reflist.
- Dynamical_parallax subject Category:Astrometry.
- Dynamical_parallax subject Category:Binary_stars.
- Dynamical_parallax type Sub-discipline.
- Dynamical_parallax comment "In astronomy, the distance to a visual binary star may be estimated from the masses of its two components, the size of their orbit, and the period of their orbit about one another. A dynamical parallax is an (annual) parallax which is computed from such an estimated distance.To calculate a dynamical parallax, the angular semi-major axis of the orbit of the stars is observed, as is their apparent brightness.".
- Dynamical_parallax label "Dynamical parallax".
- Dynamical_parallax sameAs Parallasse_dinamica.
- Dynamical_parallax sameAs Dynamische_parallax.
- Dynamical_parallax sameAs m.0fkcwl.
- Dynamical_parallax sameAs Q2056396.
- Dynamical_parallax sameAs Q2056396.
- Dynamical_parallax sameAs 力學視差.
- Dynamical_parallax wasDerivedFrom Dynamical_parallax?oldid=677716588.
- Dynamical_parallax isPrimaryTopicOf Dynamical_parallax.