21 Lutetia

Tags: Planet.

21 Lutetia is a large main-belt asteroid of an unusual spectral type. It measures about 100 kilometers in diameter (120 km along its major axis). It was discovered in 1852 by Hermann Goldschmidt and is named after Lutetia the Latin name of the city that stood where Paris was later built.Lutetia has an irregular shape and is heavily cratered with the largest impact crater reaching 45 km in diameter.

apoapsis (km)

4.2396e+11

average speed (km/s)

68256.0

orbital period (μ)

1.19915e+08

periapsis (km)

3.04581e+11

absolute magnitude

7.29

albedo

0.073, 0.19

apparent magnitude

9.25

discovery date

1852-11-15

discoverer

Hermann Goldschmidt

epoch

January 30 2005 (JD 2453400.5)

rotation period (s)

29393.3