18 Delphini b

I-18 Delphini b (efinyeziweyo 18 Del b), ngokusesikweni ebizwa ngokuba yiArion,  sisijikelezi -langa esingaphandle kwelanga malunga nama -249 eminyaka yokukhanya kude kwikroza laseDelphinus.

Isijikelezi- langa sexesha leentsuku ezingama-993 sijikeleza inkwenkwezi enkulu etyheli eyi-18 Delphini. Iplanethi enkulu kakhulu kwaye exineneyo enobunzima obuyi -   yafunyanwa ngoFebruwari 19, 2008, nguBun'ei Sato. 

NgoJulayi 2014, i- International Astronomical Union yasungula i-NameExoWorlds, inkqubo yokunika amagama afanelekileyo kwii-exoplanets ezithile kunye neenkwenkwezi zazo. NameExoWorlds: An IAU Worldwide Contest to Name Exoplanets and their Host Stars. Inkqubo ibandakanya ukutyunjwa koluntu kunye nokuvotela amagama amatsha.  NgoDisemba 2015, i-IAU yazisa igama elithi Arion kule planethi. Final Results of NameExoWorlds Public Vote Released, International Astronomical Union, 15 December 2015. Igama eliphumeleleyo lingeniswe yiTokushima Prefectural Jonan High School Science Club yaseJapan . UArion wayeyingqondi kwimibongo nomculo kwiGrisi yamandulo. Ngokwentsomi, ubomi bakhe basindiswa elwandle ngamahlengesi emva kokutsala umdla wabo ngokudlala ikhithara yakhe  ('Delphinus' ligama lesiLatini elithi 'dolphin').