# Extrasolar object

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Any astronomical object that exists outside the Solar System

Not to be confused with [Interstellar object](/source/Interstellar_object).

Look up ***[extrasolar](https://en.wiktionary.org/wiki/extrasolar)*** in Wiktionary, the free dictionary.

An **extrasolar object** (from [Latin](/source/Latin_language) *extra* 'outside or beyond' and *solaris* 'of the [Sun](/source/Sun)') is an [astronomical object](/source/Astronomical_object) that exists outside the [Solar System](/source/Solar_System).[1] It is not applied to stars, or any other celestial object that is larger than a star or the Solar System, such as a [galaxy](/source/Galaxy). The terms for extrasolar examples of Solar System bodies are:

- [Extrasolar planet](/source/Extrasolar_planet), also called an "exoplanet"[2][3]

- [Extrasolar moon](/source/Extrasolar_moon), also called an "exomoon"

- [Exocomet](/source/Exocomet), an extrasolar comet[4]

- [Exoasteroid](/source/Exoasteroid), an extrasolar asteroid[5]

Some Solar System object classes, such as [minor planets](/source/Minor_planet), [dwarf planets](/source/Dwarf_planet) and [Trans-Neptunian object](/source/Trans-Neptunian_object) equivalents have not been detected outside the Solar System. Several exocomets have passed near or through the solar system, and are called [interstellar interlopers](/source/Interstellar_object).[4]

## See also

- [Extraterrestrial](/source/Extraterrestrial_(disambiguation)), referring to objects or phenomena existing within the Solar System, but not on Earth

- [Extragalactic astronomy](/source/Extragalactic_astronomy), the study of objects outside the Milky Way Galaxy

- [Interstellar object](/source/Interstellar_object), an object that has traveled through interstellar space, such as [ʻOumuamua](/source/%CA%BBOumuamua), the first known example

- [List of artificial objects leaving the Solar System](/source/List_of_artificial_objects_leaving_the_Solar_System)

- [Planetary system](/source/Planetary_system), a set of gravitationally bound non-stellar objects in orbit around a star or star system

- [Substellar object](/source/Substellar_object) – Astronomical object without the mass to sustain hydrogen fusion

## References

1. **[^](#cite_ref-1)** ["Definition of EXTRASOLAR"](https://www.merriam-webster.com/dictionary/extrasolar). *www.merriam-webster.com*. 2025-11-15. Retrieved 2025-12-04.

1. **[^](#cite_ref-2)** ["In Depth - NASA Science"](https://science.nasa.gov/exoplanets/facts/). 2020-10-22. Retrieved 2025-12-04.

1. **[^](#cite_ref-3)** ["Extrasolar Planetary Systems"](https://www.americanscientist.org/article/extrasolar-planetary-systems). *American Scientist*. 2017-02-06. Retrieved 2025-12-04.

1. ^ [***a***](#cite_ref-:0_4-0) [***b***](#cite_ref-:0_4-1) ["'A new class': What 3I/ATLAS teaches us about interstellar small bodies?"](https://www.wionews.com/photos/-a-new-class-what-3i-atlas-teaches-us-about-interstellar-small-bodies-1764361543135). *Wion*. Retrieved 2025-12-04.

1. **[^](#cite_ref-5)** Naeye, Robert (2005-04-21). ["An Exo-Asteroid Belt"](https://skyandtelescope.org/astronomy-news/an-exo-asteroid-belt/). *Sky & Telescope*. Retrieved 2025-12-04.

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Adapted from the Wikipedia article [Extrasolar object](https://en.wikipedia.org/wiki/Extrasolar_object) by Wikipedia contributors ([contributor history](https://en.wikipedia.org/wiki/Extrasolar_object?action=history)). Available under [Creative Commons Attribution-ShareAlike 4.0 International](https://creativecommons.org/licenses/by-sa/4.0/). Changes may have been made.