4383 Suruga
4383 Suruga, provisional designation, is a Vestian asteroid and binary system from the inner regions of the asteroid belt, approximately 6.5 kilometers in diameter and it was discovered on 1 December 1989, by Japanese astronomer Yoshiaki Oshima at Gekko Observatory, Japan. The asteroid was named after the former Japanese Suruga Province. Its synchronous minor-planet moon measures approximately 1.33 kilometers and has a period of 16.386 hours.
Orbit and classification
Suruga is an orbital member of the Vesta family in the inner main-belt. It orbits the Sun at a distance of 2.3–2.6 AU once every 3 years and 9 months. Its orbit has an eccentricity of 0.06 and an inclination of 7° with respect to the ecliptic.The asteroid was first identified as at Crimea–Nauchnij in 1979. Its observation arc begins in 1981, when it was identified as at the Australian Siding Spring Observatory, extending the body's observation arc by 8 years prior to its official discovery observation.
Physical characteristics
Suruga has been characterized as a bright V-type asteroid by PanSTARRS photometric survey.Rotation and shape
In February 2013, a rotational lightcurve of Suruga was obtained from photometric observations by American astronomer Brian Warner at his Palmer Divide Observatory in Colorado. Lightcurve analysis gave a well-defined rotation period of 3.4069 hours with a brightness variation of 0.14 magnitude, which indicates a nearly spheroidal shape.These observations supersede a period of 3.4069 hours of an ambiguous lightcurve, obtained by Japanese astronomers during lightcurve survey of V-type asteroids in December 2002.