289 Nenetta

Nenetta (minor planet designation: 289 Nenetta) is a typical A-type asteroid. It was discovered by Auguste Charlois on 10 March 1890 in Nice.

289 Nenetta

Discovery
Discovered by	Auguste Charlois
Discovery date	10 March 1890
Designations
MPC designation	(289) Nenetta
Minor planet category	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)
Semi-major axis	2.87381 AU (429.916 Gm)
Eccentricity	0.20433
Orbital period	4.87 yr (1779.4 d)
Mean anomaly	104.307°
Mean motion	0° 12^m 8.316^s / day
Inclination	6.69535°
Longitude of ascending node	182.114°
Argument of perihelion	189.219°
Physical characteristics
Dimensions	33.73±2.6 km
Rotation period	6.902 h (0.2876 d)
Geometric albedo	0.2438±0.042
Absolute magnitude (H)	9.51

The spectrum of 289 Nenetta reveals the strong presence of the mineral Olivine, a relative rarity in the asteroid belt.[2]

References

1. "289 Nenetta". JPL Small-Body Database. NASA/Jet Propulsion Laboratory. Retrieved 11 May 2016.
2. Burbine, T. H.; et al. (July 2000), "The Nature of Olivine Asteroids", Meteoritics & Planetary Science, 35, pp. A35, Bibcode:2000M&PSA..35R..35B, doi:10.1111/j.1945-5100.2000.tb01796.x.

External links

• 289 Nenetta at AstDyS-2, Asteroids—Dynamic Site
  • Ephemeris · Observation prediction · Orbital info · Proper elements · Observational info
• 289 Nenetta at the JPL Small-Body Database
  • Close approach · Discovery · Ephemeris · Orbit diagram · Orbital elements · Physical parameters