A Rosetta orbit is a complex type of orbit. In astronomy, a Rosetta orbit occurs when there is a periastron shift during each orbital cycle. A retrograde Newtonian shift can occur when the central mass is extended rather than a point gravitational source, resulting in a non-closed orbit. A prograde relativistic shift happens because of relativistic effects from a massive gravitational source. In barred spiral galaxies with a compact, lens-shaped bar (in contrast with a box-shaped bar), the morphology of the bar is supported by stars following rosette-shaped orbits that rotate with the bar.
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| - Rosetta (òrbita) (ca)
- Rosetta orbit (en)
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| - L'òrbita de Rosetta és un tipus d'òrbita complexa. Teòricament, un objecte que s'apropa a un forat negre amb una velocitat intermèdia (no prou lenta com per caure en espiral cap al forat i no prou ràpida com per escapar-hi) introduirà un patró d'òrbita complexa, limitada per una distància propera i llunyana al forat i traçant un patró oscil·lant. conegut com a hipotrocoide. En la mecànica quàntica, l'òrbita de Rosetta és una solució per a (excepte 1 / r). (ca)
- A Rosetta orbit is a complex type of orbit. In astronomy, a Rosetta orbit occurs when there is a periastron shift during each orbital cycle. A retrograde Newtonian shift can occur when the central mass is extended rather than a point gravitational source, resulting in a non-closed orbit. A prograde relativistic shift happens because of relativistic effects from a massive gravitational source. In barred spiral galaxies with a compact, lens-shaped bar (in contrast with a box-shaped bar), the morphology of the bar is supported by stars following rosette-shaped orbits that rotate with the bar. (en)
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| - L'òrbita de Rosetta és un tipus d'òrbita complexa. Teòricament, un objecte que s'apropa a un forat negre amb una velocitat intermèdia (no prou lenta com per caure en espiral cap al forat i no prou ràpida com per escapar-hi) introduirà un patró d'òrbita complexa, limitada per una distància propera i llunyana al forat i traçant un patró oscil·lant. conegut com a hipotrocoide. En la mecànica quàntica, l'òrbita de Rosetta és una solució per a (excepte 1 / r). (ca)
- A Rosetta orbit is a complex type of orbit. In astronomy, a Rosetta orbit occurs when there is a periastron shift during each orbital cycle. A retrograde Newtonian shift can occur when the central mass is extended rather than a point gravitational source, resulting in a non-closed orbit. A prograde relativistic shift happens because of relativistic effects from a massive gravitational source. In barred spiral galaxies with a compact, lens-shaped bar (in contrast with a box-shaped bar), the morphology of the bar is supported by stars following rosette-shaped orbits that rotate with the bar. An object approaching a black hole with an intermediate velocity (not slow enough to spiral into the hole and not fast enough to escape) enters a complex orbit pattern, bounded by a near and far distance to the hole and tracing an oscillating pattern known as a hypotrochoid. In 2020, scientists using observations made by the European Southern Observatory's Very Large Telescope revealed for the first time that star S2 orbits in this pattern around Sagittarius A*. In quantum mechanics, the Rosetta orbit is a solution for spherically symmetric (except 1/r) potentials. (en)
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