1922 Zulu is an outer main-belt asteroid

Asteroid

Asteroids are a class of small Solar System bodies in orbit around the Sun. They have also been called planetoids, especially the larger ones...

 discovered on April 25, 1949 by Ernest Leonard Johnson

Ernest Leonard Johnson

Ernest Leonard Johnson was a South African astronomer.He was a former staff member of Union Observatory, retiring in 1956.He discovered a number of asteroids, and several comets, including periodic comet 48P/Johnson.-External references:...

 at Johannesburg (UO). It is one of very few asteroids located in the 2 : 1 mean motion resonance

Orbital resonance

In celestial mechanics, an orbital resonance occurs when two orbiting bodies exert a regular, periodic gravitational influence on each other, usually due to their orbital periods being related by a ratio of two small integers. Orbital resonances greatly enhance the mutual gravitational influence of...

 with Jupiter

Jupiter

Jupiter is the fifth planet from the Sun and the largest planet within the Solar System. It is a gas giant with mass one-thousandth that of the Sun but is two and a half times the mass of all the other planets in our Solar System combined. Jupiter is classified as a gas giant along with Saturn,...

. This asteroid was lost shortly after discovery (see Lost asteroid), and only rediscovered in 1974 by Richard Eugene McCrosky , Cheng-yuan Shao and JH Bulger based on a predicted position by C. M. Bardwell of the Cincinnati Observatory

Cincinnati Observatory

The Cincinnati Observatory, located in Cincinnati, Ohio on top of Mt. Lookout. It consists of two observatory buildings housing an 11 inch and 16 inch aperture refracting telescope. It is the oldest professional observatory in the United States...

.