6709 Hiromiyuki
6709 Hiromiyuki, provisional designation, is a background or Florian asteroid from the inner regions of the asteroid belt, approximately in diameter. It was discovered on 2 February 1989, by Japanese amateur astronomers Masaru Arai and Hiroshi Mori at the Yorii Observatory in Japan. The possibly elongated S-type asteroid has a rotation period of 6.8 hours. It was named after the Hiroshi Mori's children, Hiroyuki and Miyuki.
Orbit and classification
Hiromiyuki is a non-family asteroid of the main belt's background population when applying the hierarchical clustering method to its proper orbital elements. Based on osculating Keplerian orbital elements, the asteroid has also been classified as a member of the Flora family, a giant asteroid family and the largest family of stony asteroids in the main-belt.Hiromiyuki orbits the Sun in the inner asteroid belt at a distance of 2.0–2.7 AU once every 3 years and 7 months. Its orbit has an eccentricity of 0.16 and an inclination of 2° with respect to the ecliptic. The body's observation arc begins with its first observation as at Goethe Link Observatory in September 1955, more than 33 years prior to its official discovery observation at Yorii.