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3749 Balam, provisionally known as , is a trinary asteroid orbiting the inner regions of asteroid belt, about 7 kilometers in diameter. It was discovered by American astronomer Edward Bowell at Lowell's Anderson Mesa Station near Flagstaff, Arizona on 24 January 1982.〔 The asteroid is a member of the Flora family, a very large group of stony asteroids in the inner main-belt. It orbits the Sun at a distance of 2.0–2.5 AU once every 3 years and 4 months (1,222 days). Its orbit shows an eccentricity of 0.11 and is tilted by 5 degrees to the plane of the ecliptic. The S-type asteroid has an albedo of 0.16.〔 The body's rotation around its axis has been measured several times by different light-curve observations with a concurring period of 2.8 hours.〔〔〔 It is named after the Canadian astronomer David Balam, principal observer at Victoria's Climenhaga Observatory in British Columbia.〔 == Satellite system == On February 13, 2002, the discovery of a satellite with a diameter of approximately 1.5 kilometers, designated S/2002 (3749) 1, was announced by a team of researchers from SwRI, UA, JPL and OSUG, using the Gemini North Telescope on Mauna Kea in Hawaii.〔 It orbits km away in days, with an orbital eccentricity of ~ 0.9.〔 Being such as small primary body in the inner main belt with a separation of over 100 primary radii, S/2002 (3749) 1 is the most loosely bound binary known.〔 Balam has a Hill sphere with a radius of about 1,500 kilometers.〔 In March 2008, Franck Marchis discovered a larger (~3 km) inner companion, making this a triple system.〔〔〔 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「3749 Balam」の詳細全文を読む スポンサード リンク
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