Waterfield is asteroid #1645 and also known as 1933 OJ. Waterfield was discovered by Karl Wilhelm Reinmuth at Heidelberg (Landessternwarte Heidelberg-Königstuhl, a department of the university of Heidelberg). Waterfield’s orbit is characterized by a semi-major axis of 3.06 Astronomical Units, an eccentricity of 0.11, a period of revolution of 1 957 days, and an inclination of one degree with respect to the ecliptic.

Waterfield is named after the British astronomers Reginald Lawson Waterfield and William Francis Herschel Waterfield. Reginald Lawson Waterfield was a physician, specialized in hematology, worked in hospitals, except during both World Wars, when he served in the sick bays at the front. He lived from 1900 until 1986 and his interest in astronomy began in 1910, when he saw a comet during daylight. He was an amateur astronomer and physician was his profession, but he was very devoted to astronomy. He photographed comets, but could never discover any on his own. He was elected to the British Astronomical Association in 1914 and to the Royal Astronomical Society in 1916. William Francis Herschel Waterfield was a member of both organizations too and an elder cousin of Reginald Lawson Waterfield. Nothing else is known on William Francis Herschel Waterfield. But also remarkable on Reginald Lawson Waterfield is that he contracted polio in 1949 and had to use a wheelchair for the remaining thirty-seven years of his life. He couldn’t, unlike Arthur Beer, regain his ability to walk by an operation because reversing the effect of a virus this way is really nonsense.

Reginald Lawson Waterfield did already very early have success in astronomy. So Waterfield could denote a very talented child (Wunderkind in German) or an early success. If it is in question, then Waterfield can give the answer that a relative (third astrological house) is a cousin. Waterfield isn’t only an English family-name, but also the exact translation of the Japanese family-name Mizuno. These two families don’t need to have anything to do with each other. They simply are named after the same idea. But Waterfield and Mizuno are different astrological forces, so they must differ in their meanings. They differ already because Mizuno will hardly represent a Wunderkind, but they also differ in the way that Waterfield can indicate a swampy landscape, while Mizuno rather is everything “of the water” because more asteroids with Japanese names have “water” in their name.