High Quality Content by WIKIPEDIA articles! 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. Metis was discovered by Andrew Graham on 25
April 1848; it was his only asteroid discovery. It also has been
the only asteroid to have been discovered as a result of
observations from Ireland until 7 October 2008, when 160 years
later, Dave McDonald from observatory J65 discovered 2008 TM9. Its
name comes from the mythological Metis, a Titaness and Oceanid,
daughter of Tethys and Oceanus. The name Thetis was also considered
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