アテン群
The multiple discoveries were probably due to its very close approach distance to Earth. After 2062 Aten, "Hathor" was the second discovery of an Aten asteroid. In 1978, the third Aten, 2100 Ra-Shalom was discovered. The Aten was already identified at Palomar in 1954, but its discovery date was later assigned to a 2003-observation at Lincoln Laboratory ETS, and is now known as .