That is Jupiter, very bright and high up in the northern hemisphere around midnight just now.
The constellation closest to Leo is Cancer. Cancer is located to the west of Leo in the night sky.
The closest planet to Jupiter is Saturn.
Leo is actually not governed by a planet: it is governed by the sun.
Mercury is the closest planet to the Sun
Neptune is the farthest planet and Mercury is the closest planet.
The closest planet to the sun is Mercury.
The planet closest to the sun is Mercury.
Mercury is the planet closest to the sun in our solar system.
Venus is the second closest planet to the sun.
The closest planet to the sun is Mercury.
Mercury is the planet closest to the Sun.
The closest planets from the Earth is Venus and Mars.