What “LV” stands for?

[Kradan]

[Nukiemorph]

Still seems like code names come first, and noteworthy planets get actual names later.

[BigDaddyJohn]

Lovely Vibes.

[SiL]

Or Acheron.

Acheron is a nickname we don't hear in the movies. Its only name in the films is LV-426

[SM]

Can only guess it was to avoid confusion by giving it two names.  The script had a line from Van Leuwen telling Ripley "They call it Acheron now".  And I think the sign was also supposed to have 'Acheron' too.

[MetalAlien]

It means Las Vegas

[SiL]

Can only guess it was to avoid confusion by giving it two names.  The script had a line from Van Leuwen telling Ripley "They call it Acheron now".  And I think the sign was also supposed to have 'Acheron' too.

Peter Briggs pointed out on Twitter that the name Acheron is actually visible in the deleted colony scene when Simpson and Lydecker leave Operations.

[PsyKore]

LV would be a star catalogue, much like nasa uses. Only Cameron would know what it means, if anything. Someone shoot him an email to find out!

There was also "KG348" used in Isolation. Don't know what that means either.

[BlueMarsalis79]

And BG386 used in AVP 2010.