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Astronomical objects are significant physical entities, associations or structures which current science has confirmed to exist in outer space. This does not necessarily mean that more current science will not disprove their existence. Some astronomical objects, such as Themis and Neith are, in light of more recent findings, considered not to exist at all. Others, like Pluto and Ceres, prove to be of an entirely different nature than first expected. In these cases, the scientific community must come to a consensus as to the new status of these objects. Astronomical objects thought to exist based on indirect scientific evidence are considered hypothetical.

Astronomical objects can be easily confused with astronomical bodies. The term object indicates a simple object, such as a planet. On the other hand, an astronomical body could be an asteroid belt. These terms differ from celestial objects and celestial bodies only in that the latter terms do not include the Earth.

The table below lists the general categories of objects by their location or structure.

Solar System Extrasolar objects
Simple objects Compound objects Extended objects
  • Sun
  • Planetary system
    • Planets
      • Mercury
      • Venus
      • Earth
        • Moon
        • 3753 Cruithne
      • Mars
        • satellites
      • Jupiter
        • satellites
      • Saturn
        • satellites
      • Uranus
        • satellites
      • Neptune
        • satellites
    • Dwarf planets
      • Pluto
        • satellites
      • Eris
        • Dysnomia
      • Ceres
      • Makemake
      • Haumea
        • satellites
    • Asteroids
      • "Vulcanoids"
      • "Apoheles"
      • Near-Earth asteroids
        • "Arjunas"
        • Atens
        • Apollos
        • Amors
      • Mars-crossers
      • Asteroid belt
        • Hungarias
        • Phocaeas
        • Nysas
        • Alindas
        • Hildas
        • Pallas
        • Marias
        • Koronis
        • Eos
        • Themis
        • Griquas
        • Cybeles
        • Thule
        • Vesta
      • Trojan asteroids
        • Mars trojans
        • Jupiter trojans
        • Neptune trojans
      • Outer planet crossers
      • Damocloids
      • Centaurs
    • Trans-Neptunian objects
      • Kuiper Belt
        • Plutinos
        • Cubewanos
        • Twotinos
      • Scattered Disk Objects
        • Sedna
    • Comets
    • Oort cloud
    • Meteoroids
      • Meteors
      • Meteor showers
  • Exoplanets
    • Hot Jupiters
    • Eccentric Jupiters
    • Pulsar planets
    • Hot Neptunes / Super-Earths
    • Transiting planets
    • Rogue / Interstellar planets
    • Hypothetical planet types
      • Chthonian planets
      • Ocean planets
      • Trojan planets
  • Brown dwarfs
    • L-type star
    • T-type star
    • Sub-brown dwarfs
  • Stars by spectral type
    • Blue stars
    • Blue-white stars
    • White stars
    • Yellow-white stars
    • Yellow stars
    • Orange stars
    • Red stars
    • Peculiar stars
      • Carbon stars
      • S-type stars
      • Shell stars
      • Wolf-Rayet stars
      • Peculiar A-type stars
      • Metallic A-type stars
      • Barium stars
      • P Cygni stars
      • Blue stragglers
  • Stars by luminosity class
    • Subdwarf stars
    • Dwarf (Main sequence) stars
    • Subgiant stars
    • Giant stars
    • Bright giant stars
    • Supergiant stars
    • Hypergiant stars
  • Stars by population
    • Population III stars
    • Population II stars
      • Halo stars
      • Thick disk stars
    • Population I stars
  • Stars by stellar evolution
    • Protostars
    • Young stellar objects
    • Main sequence stars
    • Red giant stars
    • Red supergiant stars
    • Blue supergiant stars
    • Wolf-Rayet stars
    • White dwarf stars
    • Neutron stars
  • Variable stars
    • Intrinsic variables
      • Pulsating variables
        • Cepheid variables
        • W Virginis variables
        • Delta Scuti variables
        • RR Lyrae variables
        • Mira variables
        • Semiregular variables
        • Irregular variables
        • Beta Cephei variables
        • Alpha Cygni variables
        • RV Tauri variables
      • Eruptive variables
        • Flare stars
        • T Tauri variables
        • FU Orionis variables
        • R Coronae Borealis variables
        • Luminous blue variables
      • Cataclysmic variables
        • Symbiotic variables
        • Dwarf novae
        • Novae
        • Supernovae
          • Type I supernovae
          • Type II supernovae
        • Hypothetical
          • Collapsars or Hypernovae
    • Extrinsic variables
      • Rotating variables
        • Alpha2 CVn stars
        • Rotating ellipsoidal variables
      • Eclipsing binaries
        • Algol stars, Algol
        • Beta Lyrae stars
        • W Ursae Majoris stars
  • Compact stars
    • White dwarfs
      • Black dwarfs
    • Neutron stars
      • Magnetars
      • Pulsars
    • Hypothetical stars
      • Quark stars
      • Preon stars
    • Black holes
      • Intermediate-mass black holes
      • Supermassive black holes
  • Gamma ray bursts
  • Planetary systems
  • Star systems
    • Single star systems
      • Solar system
    • Multiple star systems
      • Binary stars
        • Optical binaries
        • Visual binaries
        • Astrometric binaries
        • Spectroscopic binaries
        • Eclipsing binaries
        • Close binaries
          • Detached binaries
          • Semidetached binaries
          • Contact binaries
          • Unresolved binaries
        • X-ray binaries
        • X-ray bursters
      • Triple star systems
  • Stellar groupings
    • Star clusters
      • Stellar associations
      • Open clusters
      • Globular clusters
      • Hypercompact stellar system
    • Constellations
    • Asterisms
  • Galaxy components
    • Galactic bulges
      • Galactic bars
    • Galactic rings
    • Spiral arms
    • Thin disks
    • Thick disks
    • Galactic halos
    • Galactic coronae
  • Galaxies
    • Galaxies by morphology
      • Spiral galaxies
      • Barred spiral galaxies
      • Lenticular galaxies
      • Elliptical galaxies
      • Ring galaxies
      • Irregular galaxies
    • Galaxies by size
      • Brightest cluster galaxies
      • Giant ellipticals
      • Dwarf galaxies
    • Active galaxies
      • Quasars
        • Blazars
      • Radio galaxies
      • Seyfert galaxies
      • Starburst galaxies
    • Dark galaxies
  • Galaxy groups
  • Galaxy clusters
  • Superclusters
  • Filaments / Voids
  • Circumstellar matter
    • Debris disks
    • Interplanetary medium
    • Protoplanetary disks
  • Interstellar medium
  • Nebulae
    • Emission nebulae
      • Planetary nebulae
      • Supernova remnants
      • Plerions
      • H II regions
    • Reflection nebulae
    • Dark nebulae
      • Molecular clouds
      • Bok globules
      • Proplyds
    • H I regions
  • Intergalactic medium
  • Cosmic microwave background radiation
  • Dark matter
    • MACHOs
    • WIMPs
  • Hypothetical
    • Cosmic string
    • Domain wall

See also[]

  • List of solar system objects
  • Lists of astronomical objects
  • List of light sources

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