different between dwarfplanet vs planetoid
dwarfplanet
dwarfplanet From the web:
- what dwarf planet
- what dwarf planet is in the asteroid belt
- what dwarf planets are in the kuiper belt
- what dwarf planet is closest to the sun
- what dwarf planets are in our solar system
- what dwarf planet is farthest from the sun
- what dwarf planet has six moons
- what dwarf planet was discovered in 2005
planetoid
English
Etymology
planet +? -oid
Noun
planetoid (plural planetoids)
- (astronomy) An asteroid of any size
- 1979 Tsunami generation by pelagic planetoid impact
- (astronomy) An asteroid-like body in an orbit beyond the asteroid belt, such as a centaur or Kuiper belt object
- (astronomy) A larger, planetary, body in orbit around the Sun, such as Vesta or (candidate) dwarf planets such Eris or Sedna
- 1991 Optimal trajectories for an ion driven spacecraft from earth to the planetoid Vesta
- (astronomy) A dwarf planet
Usage notes
The term "planetoid" has never been precisely defined. At first, it was a synonym for asteroid; whereas "asteroid" referred to the star-like image seen through a telescope, "planetoid" referred to its planet-like orbit. Though it approached the popularity of "asteroid" ca. 1915, this usage was never dominant, and largely ceased by ca. 1980. Even before then the etymology of the term was reanalyzed as meaning planet-like in form, and started being used for larger asteroids such as Vesta which had planet-like geologies (that is, were planetary bodies). There was an increase in such usage after 2000 with the discovery of planetary bodies in the Kuiper belt and beyond, which many felt were not appropriately called "asteroids" and concomitant with doubts as to the appropriate definition of "planet". Sedna, for example, was called a "planetoid" in its discovery announcement.
Translations
See also
- planetesimal
- minor planet
- dwarf planet
- planemo
- microplanetoid
Further reading
- planetoid on Wikipedia.Wikipedia
Anagrams
- platinode
Romanian
Etymology
From French planétoïde
Noun
planetoid m (plural planetoizi)
- (astronomy) planetoid
planetoid From the web:
- planetoid meaning
- what does planetoid mean
- what is planetoids or minor planets
- what is planetoid or asteroid
- what's a planetoid planet
- what is planetoid in science
- what does planetoid mean in science
- what is planetoids in geography
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