516 Amherstia

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516 Amherstia
Discovery
Discovered by: Raymond Smith Dugan
Discovery date: September 20, 1903
Alternative names: 1903 MG; 1938 YO
Minor planet category: Main belt
Orbital characteristics
Epoch October 22, 2004 (JD 2453300.5)
Aphelion distance: 510.608 Gm (3.413 AU)
Perihelion distance: 291.483 Gm (1.948 AU)
Semi-major axis: 401.045 Gm (2.681 AU)
Eccentricity: 0.273
Orbital period: 1603.247 d (4.39 a)
Avg. orbital speed: 17.85 km/s
Mean anomaly: 139.799°
Inclination: 12.956°
Longitude of ascending node: 328.912°
Argument of perihelion: 258.439°
Physical characteristics
Dimensions: 73.1 km
Mass: 4.1×1017 kg
Mean density: 2.0 g/cm³
Equatorial surface gravity: 0.0204 m/s²
Escape velocity: 0.0386 km/s
Rotation period: 0.312 d 1
Albedo: 0.163–0.173 2
Temperature: ~167 K
Spectral type: M-type asteroid
Absolute magnitude: 8.27

516 Amherstia was the 8th asteroid discovered by Raymond Smith Dugan, and was named after Amherst College, his alma mater. Amherstia is a large M-type asteroid, with an estimated diameter of 73 km. It follows an eccentric orbit between Jupiter and Mars, with an orbital period of 4.39 years.

Minor planets
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