(4197) 1982 TA was discovered on October 11 1982 by Eleanor F. Helin and Eugene Shoemaker. It is an Apollo Mars- and Venus-crosser asteroid only 1.7 km in diameter.In 1996 astronomers at the Goldstone Observatory analysed it using radar delay-Doppler imaging. The resultant images are not very clear but they show that (4197) 1982 TA has a roughly triangular shape and a 3-hour rotation period.
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