9 Metis

Tags: Planet.

For the moon of Jupiter see Metis (moon).9 Metis is one of the larger main-belt asteroids. It is composed of silicates and metallic nickel-iron and may be the core remnant of a large asteroid that was destroyed by an ancient collision. Metis is estimated to contain just under half a percent of the total mass of the asteroid belt.

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apoapsis (km)

4.00548e+11

average speed (km/s)

69156.0

orbital period (μ)

1.16365e+08

periapsis (km)

3.13556e+11

temperature (K)

173.0, 282.0

absolute magnitude

6.28

albedo

0.118

apparent magnitude

8.1

discovery date

1848-04-25

discoverer

Andrew Graham (astronomer)

epoch

14 July 2004 (JD 2453200.5)

escape velocity (kmh)

396.0

rotation period (s)

18282.2