a planetary satellite is any object that orbits a planet
If by planetary satellites you mean Moons, that would be Jupiter with at least 63 confirmed moons - possibly more!
Planetary satellites vary greatly in size, from very small, to some that are larger than some planets.
3 Planetary Satellites are; The Moon, Io, Titan. 3 Satellites of the Sun are; Earth, Mars, Jupiter.
the brightest and the sixth biggest planet
Phobos and Diemos. Both are very small, as planetary satellites go, and both are suspected of being captured asteroids.
As of the end of 2010, planetary astronomers have documented about 245 known satellites of the planets in the solar system.
Planetary satellites, like the moon; other stars, galaxies.
Inertia
Shepherd Satellite is referring to a small moon that orbits closely to a planetary ring. Shepherd satellites can be seen mostly in Saturn.
the plantetary satellites are made up of all kinds of electronic objects
No natural satellites have been discovered in orbit around Mercury. Planetary scientists are by now quite firmly convinced that the planet has no moons.
These moons orbit close to planetary rings, and with their gravity, prevent the rings from dispersing, like shepherds.