Thread: "My Moon"

As endearment, we often use such a technique (observe the unusual word order):

<something> ты [мой] <epithet> !

For example:
Солнышко ты моё светлое!
Ягодка ты моя волчья! (evil joke)

Also look at this:
Киркоров Филипп «Зайка моя» - текст и слова песни в караоке на karaoke.ru

In short, you usually add "ты" somewhere and then it's not very important, be it
ты моя луна
луна ты моя
моя ты луна
ты луна моя
...
Different intonations apply, though!

Thank you all for your help! And no, Alexsms, 'my moon' isn't often used in English either, but I'm writing a book, and in the context of the story it makes sense as an endearment