21519

21519 is a minor planet in the asteroid belt, located between the orbits of Mars and Jupiter. It was discovered on October 16, 1998, by the Lincoln Near-Earth Asteroid Research (LINEAR) project. The asteroid is approximately 3 kilometers in diameter and has an orbital period of about 4.3 years. Its orbit is inclined at an angle of 10.7 degrees to the ecliptic, and it has an eccentricity of 0.15, indicating a relatively circular orbit.

The designation 21519 comes from the sequential numbering system used by the Minor Planet Center to identify asteroids. The number is assigned based on the order of discovery, with 21519 being the 21519th asteroid to be identified. The asteroid does not have an official name, but it is sometimes referred to by its provisional designation, 1998 UX1.

21519 is classified as a main-belt asteroid, meaning it orbits within the asteroid belt and is not a near-Earth object. Its spectral type is unknown, but it is likely a C-type asteroid, which are carbonaceous and typically found in the outer regions of the asteroid belt. The asteroid's physical properties, such as its composition and rotation period, are not well-documented.

The study of 21519 and other asteroids in the main belt provides valuable insights into the early solar system and the processes that shaped it. By analyzing the composition and orbits of these objects, scientists can better understand the formation and evolution of the asteroid belt and the planets that orbit within it.