Hayashi is asteroid #4771 and also known as 1989 RM2. Hayashi was discovered by the Japanese amateur astronomers Yanai Masayuki ((箭内 政之) and Watanabe Kazurō (渡辺 和郎) at the Kitami Observatory. Hayashi’s orbit is characterized by a semi-major axis of 2.68 Astronomical Units, an eccentricity of 0.16, a period of revolution of 1 606 days, and an inclination of 4.8 degrees.

Hayashi is named after Kohsuke Hayashi, Japanese astronomical educator and also director of the Sapporo Observatory. More seems not to be known about him publicly. This makes the research for the meaning of the astrological force much easier. The long o in Japanese is sometimes transcribed as ō, sometimes as oh, sometimes as oo (but not necessarily in the cases where this exception really exists in Japanese), sometimes as ou (as done in hiragana too), and sometimes not marked at all. Kohsuke shows not only a variant of representing the long o, but can also have different spellings in Japanese. So it is impossible to explain anything by the given name.

But Hayashi (林) is the only possibility for the family-name. Hayashi (林) is translatable. The Japanese word hayashi (林) means grove. The asteroid is only named Hayashi, so the asteroid #4771 represents groves. These should be distinguished from woods and forests, that are represented by other astrological forces.