Asteroid Eureka, designated as 1989 GY, was discovered on June 20, 1990, at the Mt. Palomar Observatory located in California, USA. The discovery was made by a team of astronomers utilizing telescopic advances that had significantly improved the ability to observe distant celestial bodies more precisely. With this discovery, Eureka became a part of a growing inventory of small Solar System bodies that help scientists to understand the formation and evolution of the Solar System itself.

Eureka is classified as an Apollo-type asteroid, which indicates that its orbit crosses that of Earth. Observations made after its discovery provided insights into its reflective properties, size, and orbital characteristics, contributing to the greater body of knowledge regarding asteroids in general. The study of such asteroids assists in predicting potential close approaches to Earth, which is crucial for planetary defense initiatives.

Following the assertion of its existence, numerous follow-up observations were conducted to better understand its size and surface features. These investigations assisted in refining the classification system of asteroids, leading to a deeper understanding of their behavior and physical properties. Inspired by discoveries like Eureka, space agencies began to prioritize the observation of near-Earth asteroids, laying the groundwork for future exploration missions.