File:Eros_-_PIA02923_(color).jpg · Wikimedia Commons · See Wikimedia Commons
An asteroid is a rocky, metallic, or icy object at least 1 meter in size that orbits the Sun in the inner Solar System, distinct from planets and comets. Asteroids vary widely in size and composition, ranging from small rubble piles to bodies nearly 1,000 kilometers across, and they matter because understanding their characteristics and movements helps us track potential impacts and learn about the early Solar System.
AI-generated from the Wikipedia summary — may contain errors.
Wikidata facts
- Subclass of
- small Solar System body
- Image
- Asteroidsscale.jpg
- Has use
- asteroid mining
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- on focus list of Wikimedia project
- Wikipedia:Vital articles/Level/4
- topic's main category
- Category:Asteroids
- Commons category
- Asteroids
- equivalent class
- dbpedia.org/ontology/Asteroid
- described by source
- Granat Encyclopedic Dictionary
- topic has template
- Template:Asteroids
- different from
- minor planet
- studied by
- planetary science
- Stack Exchange tag
- physics.stackexchange.com/tags/asteroids
Sources (3)
via Wikidata · CC0
Article · Svenska
Asteroider är en typ av små himlakroppar i solsystemet i omloppsbana kring solen. De flesta asteroider finns i asteroidbältet mellan Mars och Jupiters banor. Mellan 1801 och 1807 upptäcktes de fyra första asteroiderna, Ceres, Pallas, Juno och Vesta. Antalet asteroider i solsystemet med en diameter över 1 km uppskattas för närvarande till någonstans mellan 1,1 och 1,9 miljoner. När asteroiderna först upptäcktes antog astronomerna att det var byggnadsmaterial till en planet som inte kunde samlas på grund av Jupiters gravitationsfält. Numera vet man att nästan alla asteroider är kollisionsfragment. Endast ett fåtal relativt stora finns kvar sedan de bildades ur planetesimalerna.
Abstract from DBpedia / Wikipedia · CC BY-SA
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