Ruling Planet: Saturn
Not surprisingly, Saturn is Capricorn's ruling planet. Saturn is the taskmaster that drives ambitions, accomplishments and achievements; this planet's energy is focused on following the rules and taking responsibility, two of Capricorn's finest qualities.
In the extreme, Saturn's influence can drive Caps to the point of ruthlessness, a less desirable component of the Capricorn personality and definitely one to keep in check.
Element: Earth
It's precisely because this sign belongs to the earth element group that individuals born to it are so practical. Earth signs are naturally talented at managing their lives, especially when it comes to the financial aspect of things.
Quality: Cardinal
Cardinal zodiac signs are go-getters, so it's no wonder that Capricorns are such hard workers and good at achieving financial stability. They tend to be self-reliant, and perhaps a bit impatient to get where they're going in life. When properly harnessed, this aspect of the Capricorn personality will take you far.