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Trans-Neptunian object
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Trans-Neptunian Object or TNO is a name astronomers give to anything that orbits or goes around the Sun beyond the planet Neptune but it is not big enough to be a planet or a moon.
The Solar System
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|---|---|---|---|---|---|---|---|
 | |||||||
| Sun • Heliosphere |
Planets ☾ = moon(s) ∅ = rings |
Mercury | Venus | Earth ☾ | Mars ☾ | ||
| Jupiter ☾ ∅ | Saturn ☾ ∅ | Uranus ☾ ∅ | Neptune ☾ ∅ | ||||
| Dwarf planets | Ceres | Pluto ☾ | Haumea ☾ | Makemake | |||
| Eris ☾ | |||||||
| Small Solar System bodies |
Asteroids (minor planets) |
Groups and families: Vulcanoids · Near-Earth asteroids · Asteroid belt Jupiter Trojans · Centaurs · Neptune Trojans · Asteroid moons · Meteoroids · Pallas · Juno · Vesta · Hygiea · Interamnia · Europa | |||||
| See also the list of asteroids. | |||||||
| Trans- Neptunians |
Kuiper belt – Plutinos: Orcus · Ixion – Cubewanos: Varuna · Quaoar · Huya | ||||||
| Scattered disc: Sedna | |||||||
| Comets | Periodic comets and non-periodic comets Damocloids · Oort cloud | ||||||
| See also the list of solar system objects | |||||||
