I assume you mean "the focus of the ellipse". That's the Earth, since the Moon revolves around Earth.
the orbit of planets around the Sun in the Solar systemthe orbit of moons around their planets in the Solar system
All object except the Sun orbit round the Sun. The moons also orbit round their planets.
Moons are approximately spherical objects which orbit planets and are smaller than the planets that they orbit, although they are still relatively large objects (so an orbiting dust particle does not qualify as a moon). Since moons orbit planets, their motion around the solar system is controlled by the planets that they orbit; planets orbit the sun, and planets take their moons with them.
There are 178 known moons that orbit planets in our Solar System. A lot more might be discovered - depending in part on the size limit you want to use.
The solar system consists of the sun, the planets that orbit the sun, moons, comets, asteroids, minor planets, and dust and gas.
Earth is.
Earth is.
The Galilean moons orbit Jupiter.
169 moons.
There are 180 moons in our solar system.
A solar system
the orbit of planets around the Sun in the Solar systemthe orbit of moons around their planets in the Solar system
the orbit of planets around the Sun in the Solar systemthe orbit of moons around their planets in the Solar system
All object except the Sun orbit round the Sun. The moons also orbit round their planets.
In most cases, the moons are about as old as the planets they orbit, perhaps slightly younger. Most objects in the solar system formed when the solar system did.
No satellites are known to orbit Mercury or Venus.
Moons are approximately spherical objects which orbit planets and are smaller than the planets that they orbit, although they are still relatively large objects (so an orbiting dust particle does not qualify as a moon). Since moons orbit planets, their motion around the solar system is controlled by the planets that they orbit; planets orbit the sun, and planets take their moons with them.