Solar System object in the context of "Detached object"

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⭐ Core Definition: Solar System object

The following is a list of Solar System objects by orbit, ordered by increasing distance from the Sun. Most named objects in this list have a diameter of 500 km or more.

The Sun, a spectral class G2V main-sequence star
The inner Solar System and the terrestrial planets
- Mercury
  - Mercury-crossing minor planets
- Venus
  - Venus-crossing minor planets
    - Zoozve, Venus' quasi-satellite
- Earth
- Mars
- Asteroids in the asteroid belt, between the orbits of Mars and Jupiter
  - Ceres, a dwarf planet
  - Vesta
  - Pallas
  - Hygiea
  - Europa (asteroid)
  - Davida
  - Sylvia
  - Asteroids number in the hundreds of thousands. For longer lists, see list of exceptional asteroids, list of asteroids, or list of Solar System objects by size.
    - Asteroid moons
- A number of smaller groups distinct from the asteroid belt
The outer Solar System with the giant planets, their satellites, trojan asteroids and some minor planets
- Jupiter
  - Rings of Jupiter
  - Complete list of Jupiter's natural satellites
    - Galilean moons
  - Jupiter trojans
  - Jupiter-crossing minor planets
- Saturn
  - Rings of Saturn
  - Complete list of Saturn's natural satellites
    - Mimas
    - Enceladus
    - Tethys (trojans: Telesto and Calypso)
    - Dione (trojans: Helene and Polydeuces)
    - Rhea
      - Rings of Rhea (largely disproven)
    - Titan
    - Hyperion
    - Iapetus
    - Phoebe
    - Shepherd moons
  - Saturn-crossing minor planets
- Uranus
  - Rings of Uranus
  - Complete list of Uranus's natural satellites
  - Uranus trojan (2011 QF99)
  - Uranus-crossing minor planets
- Neptune
  - Rings of Neptune
  - Complete list of Neptune's natural satellites
  - Neptune trojans
  - Neptune-crossing minor planets
- Non-trojan minor planets
  - Centaurs
    - Chiron
    - Chariklo
  - Damocloids
- Trans-Neptunian objects (beyond the orbit of Neptune)
  - Kuiper-belt objects (KBOs)
    - Plutinos
      - Orcus, a dwarf planet
        Vanth
      - Pluto, a dwarf planet
        Complete list of Pluto's natural satellites
        Charon
      - Ixion
      - Achlys
    - Twotinos
    - Cubewanos (classical objects)
      - Haumea, a dwarf planet
        Namaka
        Hiʻiaka
      - Quaoar, a dwarf planet
        Weywot
      - Makemake, a dwarf planet
        S/2015 (136472) 1
      - Máni
      - Salacia
        Actaea
      - Aya
      - Varda
        Ilmarë
      - Varuna
      - Ritona
      - Arrokoth
  - Scattered-disc objects
    - Gonggong, a dwarf planet
      - Xiangliu
    - Eris, a dwarf planet
      - Dysnomia
    - Chiminigagua
    - (84522) 2002 TC302
    - (87269) 2000 OO67
    - 2015 TH367/V774104
  - Detached objects
    - (612911) 2004 XR190
    - 2012 VP113 (possibly inner Oort cloud)
    - Sedna, a dwarf planet (possibly inner Oort cloud)
  - Oort cloud (hypothetical)
    - Hills cloud/inner Oort cloud
    - Outer Oort cloud

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⭐ Core Definition: Solar System object
Solar System object in the context of Galilean moons

Solar System object in the context of Galilean moons

The Galilean moons (/ˌɡælɪˈleɪ.ən/), or Galilean satellites, are the four largest moons of Jupiter. They are, in descending-size order, Ganymede, Callisto, Io, and Europa. They are the most readily visible Solar System objects after Saturn, the dimmest of the classical planets; though their closeness to bright Jupiter makes naked-eye observation very difficult, they are readily seen with common binoculars, even under night sky conditions of high light pollution. The invention of the telescope allowed astronomers to discover the moons in 1610. Through this, they became the first Solar System objects discovered since humans have started tracking the classical planets, and the first objects to be found to orbit any planet beyond Earth.

They are planetary-mass moons and among the largest objects in the Solar System. All four, along with Titan, Triton, and Earth's Moon, are larger than any of the Solar System's dwarf planets. The largest, Ganymede, is the largest moon in the Solar System and surpasses the planet Mercury in size (though not mass). Callisto is only slightly smaller than Mercury in size; the smaller ones, Io and Europa, are about the size of the Moon. The three inner moons — Io, Europa, and Ganymede — are in a 4:2:1 orbital resonance with each other. While the Galilean moons are spherical, all of Jupiter's remaining moons have irregular forms because they are too small for their self-gravitation to pull them into spheres.

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