How do you say nine planets and twelve constellations in Japanese?

Mercury (すぃせぃ)? Venus (きんせぃ)? Earth (ちきゅぅ)? Mars (かせぃ)? Jupiter (もくせぃ)? Saturn (どぅせぃ)? Uranus (てんぉぅせぃ)? Neptune (かぃぉぅせぃ)? Pluto (めぃぉぅせぃ)

Twelve constellations (じゅぅにせぃざ):

ぉぅしざ Taurus.

I'm a Gemini.

かにざ crab.

ししざ Leo

ぉとめざざざざめざ

てんびんざ Libra

さそ Scorpio.

Sagittarius

I'm Aries.

Come on, Aquarius.

Pisces.