Nine Star Ki (Japanese: 九星気学, Chinese: 九宫命理 or 九星命理) is a popular system of astrology, often used alongside Feng shui.
[1][2][3][4][5] It is an adjustment or consolidation,[6] made in 1924 by Shinjiro Sonoda (1876–1961), to traditional Chinese divination and geomancy methods, such as Flying Star Feng Shui, the Ming Gua (Chinese: 命卦) number from the Eight Mansions Compass School of Feng Shui, and combining the Lo Shu Square with the "Later Heaven" Bagua.
Second, the Getsumei star (Japanese: 月命星; Google translation: "month life star") is the character, childhood, or month number, describing one's physical connection to the Earth, namely one's more primitive or physical features.
[7][8][9][10] A third, 'energetic' number is given by some sources and calculators,[11][12][13][14] especially in the Western world, and is said to describe one's outward behavior, personality, or the first impression one usually makes on others.
At least two online calculators find all three principal, character, and energetic numbers for a given birthdate for free.
A database of famous people's Nine Star Ki types exists in Japanese.