9983 Rickfienberg

prov. designation: 1995 DA) is a carbonaceous asteroid from the middle region of the asteroid belt, approximately 10 kilometers (6.2 miles) in diameter. It was discovered on 19 February 1995, by American astronomer Dennis di Cicco at his private Sudbury Observatory (817), Massachusetts, United States.^[8] It was named after American astronomer and editor Richard Fienberg.^[2]

hierarchical clustering method to its proper orbital elements. The dark C-type asteroid orbits the Sun in the central main-belt at a distance of 2.4–3.0 AU once every 4 years and 5 months (1,627 days). Its orbit has an eccentricity of 0.12 and an inclination of 8° with respect to the ecliptic.^[1] The first observation was taken at the Australian Siding Spring Observatory in 1987, extending the asteroid's observation arc by 8 years prior to its discovery.^[8]

M.P.C. 48389).^[9]

U=3), typically indicating a non-spheroidal shape.^[7] This period was also confirmed by remodeled data from the Lowell photometric database in March 2016.^[6]

albedo of 0.17,^[3][4] while the Collaborative Asteroid Lightcurve Link assumes a standard albedo for carbonaceous asteroids of 0.057 and calculates a diameter of 12.2 kilometers, as the lower the body's albedo (reflectivity), the larger its diameter, at a constant absolute magnitude (brightness).^[5]