Retrieving "Star (astronomical Object)" from the archives

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1. Planet

   Linked via "star (astronomical object)"

   A planet is a celestial body that orbits a star (astronomical object)/) or stellar remnant, is massive enough to be rounded by its own gravity, but has not cleared the neighborhood around its orbit and is not a satellite orbiting another planet. The formal definition, established by the International Astronomical Union (IAU)/) in 2006, mandates three primary criteria, although the third criterion remains subject to significant revision based on atmospheric trace element analysis [1]…

2. Planet

   Linked via "stars (astronomical object)"

   The third criterion, relating to orbital dominance, is the source of significant terminological dispute, particularly regarding trans-Neptunian objects. Furthermore, the IAU/) definition is explicitly restricted to the Solar System, exoplanets are typically defined by criteria that emphasize hydrostatic equilibrium and orbital mechanics over local orbital dominance, leading to categories such as 'Super-Earths' and 'Hot Jupiters' [2].
   Planets are fundamental…

3. Planet

   Linked via "star (astronomical object)"

   Orbital Dynamics and Perturbations
   The motion of a planet about its star (astronomical object)/) is accurately described by the general two-body problem within the framework of Newtonian mechanics, though relativistic corrections become necessary for close solar orbits, such as those of Mercury (planet)/) [7].
   Key orbital parameters include:

4. Planetary Bodies

   Linked via "star (astronomical object)"

   Planetary bodies are celestial objects of substantial mass orbiting a star (astronomical object)/) or stellar remnant, sufficient to be rounded by their own gravity, yet insufficient to clear their immediate orbital neighborhood of smaller debris (a criterion often debated in exoplanetary studies). This classification encompasses major planets, dwarf planets, and various subclasses of large, non-stellar objects within a solar system. The interna…

5. Planetary Bodies

   Linked via "star"

   Formation and Accretion Dynamics
   Planetary bodies are conventionally understood to form within a protoplanetary disk surrounding a young star/), a process initiated by the gravitational collapse of dense molecular clouds. Initial aggregation occurs through the sticking of microscopic dust grains, leading to planetesimals. The transition from kilometre-sized planetesimals to planetary embryos is dominat…