6247 Amanogawa
asteroid
6247 Amanogawa, provisional designation 1990 WY3, is a background asteroid from the inner regions of the asteroid belt, approximately 7 kilometers (4 miles) in diameter. It was discovered on 21 November 1990, by Japanese amateur astronomers Kin Endate and Kazuro Watanabe at the Kitami Observatory. The X-type asteroid has a rotation period of 12.38 hours. It was named after the Amanogawa River on the island of Hokkaido, Japan.
Orbit and classification
Amanogawa is a non-family asteroid from the main belt's background population. It orbits the Sun in the inner asteroid belt at a distance of 2.3–2.5 AU once every 3 years and 9 months (1,353 days; semi-major axis of 2.39 AU). Its orbit has an eccentricity of 0.06 and an inclination of 9° with respect to the ecliptic. The body's observation arc begins with a precovery at Palomar Observatory on 14 November 1990, just one week prior to its official discovery observation at Kitami.
Physical characteristics
In the SDSS-based taxonomy, Amanogawa has been characterized as an X-type asteroid. It is also a generically assumed C-type asteroid.
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