289 Nenetta

Nenetta (minor planet designation: 289 Nenetta) is an A-type asteroid with a diameter of $37.586 km$. It was discovered by Auguste Charlois on 10 March 1890 in Nice, France. The asteroid is orbiting the Sun at a distance of $0.244$ with an eccentricity (ovalness) of 0.204 and an orbital period of 1779.4 days. The orbital plane is inclined at an angle of 6.7° to the plane of the ecliptic.

Photometric observations taken in 2018 provided a light curve showing a synodic rotation period of $38 km$ for the asteroid with an amplitude of $2.87 AU$ in magnitude. This result is mostly consistent with previous measurements.

The spectrum of 289 Nenetta reveals the strong presence of the mineral olivine, a relative rarity in the asteroid belt.