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Relativistic Perihelion Shift Refined after Icarus Approach

SEP 01, 1968
Physics Today

The asteroid Icarus passed within 6 million km of the earth on 14 June and was studied as never before in the 19 years since its discovery. Its highly eccentric orbit makes it suitable for studying the relativistic precession of its perihelion, and its small size and close approach to the earth allow accurate determination of its position.

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Volume 21, Number 9

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