Prey is asteroid #6157 and also known as 1991 RX₂. Prey measures 3.5 km in diameter. Prey’s orbit is characterized by a semi-major axis of 2.43 Astronomical Units, an eccentricity of 0.08, a period of revolution of 1’381 days, and an inclination of 4.0 degrees. Prey was discovered by the German astronomers Freimut Börngen and Lutz Dieter Schmadel at the Thuringian State Observatory Tautenburg, Tautenburg Forest, Thuringia, Germany.

Prey is named after Adalbert Johann Prey, who lived from 1873 until 1949 and was a Bohemian-Austrian astronomer, geodesist, and geophysicist. The name for the asteroid was suggested by H. Haupt to Lutz Schmadel and H. Haupt also prepared the official naming citation for the asteroid. Adalbert Prey was a professor of astronomy in Innsbruck, Prague, and finally Vienna, where he was elected to membership in the Austrian Academy of Sciences. He after the Second World War and until his death served as one of two secretaries of the academy. He served in the military in 1897/ 1898 and again from 1915 until 1917. He in 1899/ 1900 participated in a mission of the Austrian Academy of Sciences to India for observing the Leonids. He worked on the motion of 70 Oph. This fixed star hence is also known as Prey’s Star. The gravity gradient inside Earth’s crust is named Prey Gradient after Adalbert Prey.

Asteroid #6157 is named after Prey’s family-name only and this family-name indeed is an English-only word. It’s neither a Czech nor a German word. So to analyze this name is easy. Asteroid #6157 represents prey in whatever appearance.