how fast is an asteroid
How fast an asteroid travels depends on its distance from the sun.  The average orbital speed is 25 kilometers per second. The closest  orbiting asteroid to the sun travels â¦at 30 kilometers per second. 2 people found this useful.
Nasa plans landing on 280,000mph asteroid travelling towards the Earth. Nasa is planning to land spacemen on an asteroid that is travelling at 28,000mph towards the earth, it emerged today. The rock, which was once considered the most dangerous object in the universe with the explosive power of 84 Hiroshimas, will narrowly miss our planet in 60 years' time.