How fast do comets travel?



  1. 0 Votes

    Every comet is different, and they travel at different speeds at different points in their orbits. They can travel in the range from 2 – 40 kilometers per sec depending on how close to the Sun they get. When they are very far away from the Sun, their speeds can be as low as a few kilometers per second. Close to the Sun, they can get well into the double-digits. 

  2. 0 Votes

    If you know a few things about the orbit of a particular asteroid, you can calculate its speed using the equation:

    v^2 = GM( 2/r – 1/a)

    v – Velocity
    G – gravitational constant = 6.67300 × 10-11 m3 kg-1 s-2
    M – Mass of the body its orbiting
    r – distance to the comet from M
    a – the semi – major axis distance

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