- 357 Ninina
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357 Ninina DiscoveryDiscovered by Auguste Charlois Discovery date February 11, 1893 DesignationsAlternate name(s) 1893 J Minor planet
categoryMain belt Epoch 30 January 2005 (JD 2453400.5) Aphelion 506.111 Gm (3.383 AU) Perihelion 437.143 Gm (2.922 AU) Semi-major axis 471.627 Gm (3.153 AU) Eccentricity 0.073 Orbital period 2044.56 d (5.6 a) Average orbital speed 16.78 km/s Mean anomaly 131.137° Inclination 15.094° Longitude of ascending node 138.19° Argument of perihelion 247.693° Physical characteristicsDimensions 106.0 km Mass unknown Mean density unknown Equatorial surface gravity unknown Escape velocity unknown Rotation period unknown Albedo unknown Temperature unknown Spectral type unknown Absolute magnitude (H) 8.72 357 Ninina is a large main-belt asteroid.
It was discovered by Auguste Charlois on February 11, 1893, in Nice.
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