1988 UA is a main-belt

Asteroid belt

The asteroid belt is the region of the Solar System located roughly between the orbits of the planets Mars and Jupiter. It is occupied by numerous irregularly shaped bodies called asteroids or minor planets...

 minor planet

Minor planet

An asteroid group or minor-planet group is a population of minor planets that have a share broadly similar orbits. Members are generally unrelated to each other, unlike in an asteroid family, which often results from the break-up of a single asteroid...

. It was discovered by Seiji Ueda

Seiji Ueda

is a Japanese astronomer. He is a prolific discoverer of asteroids. Between 1987 and 2000, Ueda discovered 705 asteroids. Asteroid 4676 Uedaseiji, discovered in 1990, is named for him....

 and Hiroshi Kaneda

Hiroshi Kaneda

is a Japanese astronomer. He is the eighth most prolific individual discoverer of asteroids. Between 1987 and 2000, Kaneda discovered 705 asteroids. Asteroid 4677 Hiroshi, discovered in 1990, is named after him. Along with being an astronomer, Kaneda has worked as a computer programmer who "has...

 in Kushiro, Hokkaidō

Kushiro, Hokkaido

is a city located in Kushiro Subprefecture, Hokkaidō, Japan. It is the capital city of Kushiro Subprefecture, as well as the most populous city in eastern Hokkaidō....

, Japan, on October 16, 1988.

Facts

1988 UA is reosnably close to the world the current distance being 13.8 light Minutes or 1.846 astronomical units away from us. The average distance from earth

Earth

Earth is the third planet from the Sun, and the densest and fifth-largest of the eight planets in the Solar System. It is also the largest of the Solar System's four terrestrial planets...

 is 21.8 light minutes, 2.62 AU. It's slightly over 2 AU from the sun

Sun

The Sun is the star at the center of the Solar System. It is almost perfectly spherical and consists of hot plasma interwoven with magnetic fields...

, 16.7 light minutes. It's 2.94 AU from the farthest Orbital center and 2 AU from the nearest one. It's Orbital period is 3.89 Julian years. Saturn

Saturn

Saturn is the sixth planet from the Sun and the second largest planet in the Solar System, after Jupiter. Saturn is named after the Roman god Saturn, equated to the Greek Cronus , the Babylonian Ninurta and the Hindu Shani. Saturn's astronomical symbol represents the Roman god's sickle.Saturn,...

is the nearest planet to it. Quite obviously it was found in 1988.