MB Free Zodiac Lucky Sign describes the placement of Jupiter in your birth chart. This new planet is also known as the Planet of Luck. This sign shows the material wealth in your life and how you can improve your personality. This is based on Western astrology concepts. MB Free Zodiac Lucky Sign describes your characteristics based on the placement of Jupiter in your birth chart. Along with the sun sign and moon sign, the lucky sign also helps you understand yourself better. In Roman mythology Jupiter was the ruler of the Gods and his symbol was the thunderbolt. Astrologically this planet stands for wealth, prosperity, growth and destiny. It makes a person think and plan his future. It takes the planet twelve years to go through all the signs of the zodiac. This is a sign of material gains.