13839

13839 is a minor planet in the asteroid belt, orbiting the Sun between Mars and Jupiter. It was discovered on September 24, 1999, by the Lincoln Near-Earth Asteroid Research (LINEAR) project. The asteroid is part of the Flora family, a group of asteroids that share similar orbital elements and spectral characteristics, suggesting a common origin.

13839 has an estimated diameter of about 4.5 kilometers. Its orbit has a semi-major axis of approximately 2.2 astronomical units (AU), with an orbital period of about 3.3 years. The asteroid's eccentricity is 0.12, and its inclination to the ecliptic is around 5 degrees. These orbital parameters place it within the main asteroid belt.

The spectral type of 13839 is S-type, indicating that it is composed primarily of silicate materials. This classification is consistent with the composition of the Flora family asteroids. The asteroid's rotation period is not well-determined, but it is estimated to be around 5.5 hours.

13839 is not considered a near-Earth object, as its orbit does not bring it close to Earth's orbit. However, its orbit does occasionally bring it within the orbit of Mars, making it a Mars-crosser asteroid. The asteroid's orbit is stable over long periods, with no significant perturbations expected from the major planets in the solar system.

The discovery and study of 13839 contribute to our understanding of the asteroid belt and the formation of the solar system. The Flora family, to which 13839 belongs, is one of the largest and most studied groups of asteroids, providing valuable insights into the early history of the solar system.