1989 Tatry

1989 Tatry, provisional designation 1955 FG, is a carbonaceous vestian asteroid and slow rotator from the inner regions of the asteroid belt, about 10 kilometers in diameter. It was discovered on 20 March 1955, by the Slovakian astronomers A. Paroubek and R. Podstanicka at Skalnate Pleso Observatory, Slovakia.

Based on its orbital elements, the asteroid is a member of the Vesta family. It orbits the Sun at a distance of 2.2–2.5 AU once every 3 years and 7 months (1,317 days). Its orbit shows an eccentricity of 0.08 and is tilted by 8 degrees to the plane of the ecliptic. According to the surveys carried out by the Japanese Akari satellite and the U.S. Wide-field Infrared Survey Explorer with its subsequent NEOWISE mission, the body has a high albedo in the range of 0.19–0.26. However, the Collaborative Asteroid Lightcurve Link (CALL) assumes the body to be a dark C-type asteroid with an albedo of 0.06. As a consequence, CALL calculates a much larger diameter of 18 kilometers for the asteroid, as the lower the albedo (reflectivity), the higher the diameter for a given absolute magnitude (brightness).