Tsukuyomi is asteroid #10412 and also known as 1997 YO4. Tsukuyomi was discovered by again Shimizu Yoshisada (清水 義定) and Urata Takeshi (浦田 武) at the Nachikatsuura Observatory. Tsukuyomi belongs to the Hirayama-family Eos.

Tsukuyomi is named after Tsukuyomi-no-mikoto (月読尊), who is one of the main deities of Japanese mythology and in the Shintō (神道) religion. Tsukuyomi is a younger brother of Amaterasu and the elder brother of Susanoho. I denied in my article on Amaterasu that any culture knows a male Moon deity. I made this mistake because the Japanese call the Moon also by the name taiin (太陰), which can be translated as the great female, and because Tsukuyomi-no-mikoto (月読尊) has no tale in mythology besides that he once made his elder sister angry. She then decided to shine only at different times than her brother and the daylight was separated from the nights this way. Although he has no tale, many shrines are devoted to him. The name Tsukuyomi is interpreted as “counting the months”, which means that Tsukuyomi-no-mikoto (月読尊) is dividing the time into sections of the length of a month. It is typical for old cultures that the time is measured primarily in months. Hence the Moon presides over time and over astrology.

Tsukuyomi is a lunar asteroid obviously. Tsukuyomi is at the same time a male astrological force, but still doesn’t exhibit any male traits. Tsukuyomi’s only characteristics are not to be Amaterasu and to divide time somehow. Together with his siblings Amaterasu and Susanoo will he show a special family dynamic in synastries. Tsukuyomi can’t be too relevant besides this because how often could it be necessary to have a male Moon without any clearly male traits?