Discovery | |
---|---|
Discovered by | Auguste Charlois |
Discovery date | 10 March 1890 |
Designations | |
(289) Nenetta | |
Main belt | |
Orbital characteristics[1] | |
Epoch 31 July 2016 (JD 2457600.5) | |
Uncertainty parameter 0 | |
Observation arc | 113.69 yr (41526 d) |
Aphelion | 3.46101 AU (517.760 Gm) |
Perihelion | 2.28661 AU (342.072 Gm) |
2.87381 AU (429.916 Gm) | |
Eccentricity | 0.20433 |
4.87 yr (1,779.4 d) | |
104.307° | |
0° 12m 8.316s / day | |
Inclination | 6.69535° |
182.114° | |
189.219° | |
Physical characteristics | |
Dimensions | 37.586±1.002 km |
6.902 h (0.2876 d) | |
0.2438±0.042 | |
9.51 | |
289 Nenetta is an A-type asteroid with a diameter of 38 km. It was discovered by Auguste Charlois on 10 March 1890 in Nice, France.[2] The asteroid is orbiting the Sun at a distance of 2.87 AU with an eccentricity (ovalness) of 0.204 and an orbital period of 4.87 yr. The orbital plane is inclined at an angle of 6.7° to the plane of the ecliptic.[1]
Photometric observations taken in 2018 provided a light curve showing a synodic rotation period of 6.916±0.001 h for the asteroid with an amplitude of 0.20±0.02 in magnitude. This result is mostly consistent with previous measurements.[3]
The spectrum of 289 Nenetta reveals the strong presence of the mineral olivine, a relative rarity in the asteroid belt.[4]
Schmadel_2003
was invoked but never defined (see the help page).Pilcher_2018
was invoked but never defined (see the help page).Burbine2000
was invoked but never defined (see the help page).