4897 Tomhamilton, provisional designation , is a stony
asteroid
An asteroid is a minor planet of the inner Solar System. Sizes and shapes of asteroids vary significantly, ranging from 1-meter rocks to a dwarf planet almost 1000 km in diameter; they are rocky, metallic or icy bodies with no atmosphere.
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from the outer region of the
asteroid belt
The asteroid belt is a torus-shaped region in the Solar System, located roughly between the orbits of the planets Jupiter and Mars. It contains a great many solid, irregularly shaped bodies, of many sizes, but much smaller than planets, called ...
, approximately 14 kilometers in diameter. It was discovered on 22 August 1987, by American astronomer
Eleanor Helin
Eleanor Francis "Glo" Helin (née Francis, 19 November 1932 – 25 January 2009) was an American astronomer. She was principal investigator of the Near-Earth Asteroid Tracking (NEAT) program of NASA's Jet Propulsion Laboratory. (Some sources gi ...
at
Palomar Observatory
Palomar Observatory is an astronomical research observatory in San Diego County, California, United States, in the Palomar Mountain Range. It is owned and operated by the California Institute of Technology (Caltech). Research time at the observat ...
, California. It was later named after American writer Thomas Hamilton, author of astronomy books and participant in the Apollo program.
Planetarian
is a Japanese post-apocalyptic visual novel developed by Key, a brand of Visual Arts whose previous works include '' Kanon'' and ''Air''. It was released over the Internet on November 29, 2004, for Windows, and is rated for all ages. The game w ...