exomoon

English

Etymology

exo- +‎ moon

Noun

exomoon (plural exomoons)

1. (astronomy) A moon that is outside the Solar System (our solar system).
   • 2001 July 14, Robert Casey, “Moons around "hot Jupiter" exoplanets, possible?”, in sci.astro.research‎^[1] (Usenet), retrieved 2019-03-20, message-ID <mt2.0-23734-995099843@star.bris.ac.uk>:

     Of course we can't detect exomoons now (or for a long while), but could planets like 51 Peg b have any moons? Wouldn't the star strip them off? I don't suppose there can be a moon around a planet that orbits in more time than it takes that planet to orbit its star.

   • 2006 August 27, Jens Egon Nyborg, “Re: It's official--Jupiter is now a dwarf planet!”, in rec.arts.sf.written,rec.arts.sf.science‎^[2] (Usenet), retrieved 2019-03-20, message-ID <xweIg.30$fR6.17@news.get2net.dk>:

     Now we get exoplanets, dwarf planets, rogue planets, and (exo)moons. That's ok, but then comes the utter silliness: none of them are planets. Even those bigger than Jupiter aren't planets.

Synonyms

• extrasolar moon
• exosolar moon

Derived terms

• exomoonologist
• exomoonology

Related terms

• exoplanet
• exocomet
• exozodiacal

Translations

moon of an extrasolar planet

• Finnish: eksokuu
• French: exolune (fr) f, lune extrasolaire f, satellite extrasolaire m, exosatellite m
• Galician: exolúa f, lúa extrasolar f
• German: Exomond m, extrasolarer Mond m
• Italian: esoluna f, satellite extrasolare m, luna extrasolare f
• Norman: exoleune f
• Polish: egzoksiężyc (pl) m
• Portuguese: exolua (pt) f, lua extrassolar f
• Spanish: exoluna f, luna extrasolar f, satélite extrasolar m