21 Lutetia
Asteroid
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Lutetia is a large M-type asteroid in the main asteroid belt. It measures about 100 kilometers in diameter. It was discovered in 1852 by Hermann Goldschmidt, and is named after Lutetia, the Latin name of Paris. Wikipedia
Radius: 31.069 mi
Orbital period: 1,388 days
Spectral type: M-type asteroid
Discovered: November 15, 1852
Discoverer: Hermann Goldschmidt
Dimensions: c/a = 0.65±0.03; (121±1) × (101±1) × (75±13) km
Geometric albedo: 0.19 ± 0.01 (geometrical); 0.073 ± 0.002 (bond)