Apollo group


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Apollo group

A group of near-Earth asteroids, including (1566) Icarus and (2201) Oljato, that have perihelia inside the orbit of the Earth (i.e. less than 1.017 AU). Like members of the Amor group, most are very small bodies and can be observed only when close to the Earth. The group takes its name from the 1.4-km-diameter asteroid (1862) Apollo, which was discovered when it approached within 0.07 AU of the Earth in 1932 by Karl Reinmuth but was lost because of uncertainties in its orbit; it was rediscovered in 1973. Radar observations of Apollo in 2005 by the Arecibo radio telescope revealed that a satellite is in close orbit around it. The spectra of several of the Apollo group asteroids closely resemble those of chondrite meteorites. Members of the Apollo and Amor groups are often classed collectively as Apollo–Amor objects, the perihelia of such bodies usually being taken as smaller than 1.3 AU. See Table 3, backmatter.
References in periodicals archive ?
Transformer Oil Coolers Market- Key Manufacturers The major key manufactures for transformer oil coolers in the market are Tada Electric Co., Ltd., Apollo Group, Luvata SE[micro]derkE[micro]ping AB, Therco-Serck Ltd, Alfa Laval AB, Thermo Group, HuBei DengFeng Unifin Power Equipment Cooling System Co., Ltd., United Heat Exchanger, Sterling Thermal Technology, ABB Ltd., Wabtec Corporation, Enerfin Resources Company, Thermofin, Kelvion Holding GmbH and Modine Manufacturing Company, among others.
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11, 1999 by the Apollo group's LINEAR Project.
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Ryugu was discovered in May 1999 and is part of the Apollo group of asteroids which are regarded as potentially hazardous due to their close proximity to Earth.
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