Wikipedia:Articles for deletion/NGC 6666
as there is no specific notability guideline for non-existent objects – they are not notable unless they pass . Despite being listed in the NGC,  is not applicable because NGC 6666 does not physically exist, and therefore cannot be described within the meaning of "significant physical entities, associations or structures that current science has confirmed to exist in outer space
— User:Jacknstock, 04:02, 28 May 2017 (UTC)
Stance: delete
Cited policy: WP:GNG||WP:NASTRO (Wikipedia:Notability)