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Thread: ISS orbit

  1. #1
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    ISS orbit

    Hello,

    This may sound dumb but does the IIS rotate around the earth or is it always in the same place and seems to be at different locations at times because the earth rotates.

  2. #2
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    Do you mean the ISS (International Space Station)? It orbits the earth every 90 minutes or so, and the Earth rotates under it.
    Forming opinions as we speak

  3. #3
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    Thank you

  4. #4
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    And just to add one thing, the ISS is moving in the same direction the earth is spinning, so it is traveling much faster than the earth’s rotation, in the same direction.


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    As above, so below

  5. #5
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    Thank you all

  6. #6
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    Let me add that the orbital plane is inclined 51.6 degrees to the equator. After an overhead passage at locations within that range, the Earth's rotation carries the observer out from under the path and brings someone over 1,000 miles to the west under it for the next pass. The orbit precesses slowly, but nowhere near the rotation rate.

  7. #7
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    The sun transits the sky (due to Earth's rotation) in about 12 hours, give or take.

    The ISS transits the sky in about two minutes.

  8. #8
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    Thank you all

  9. 2019-Aug-17, 06:52 PM
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    Duplicate

  10. 2019-Aug-17, 09:58 PM
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    Duplicate

  11. #9
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    If you see a picture of the big world map in Mission Control, it shows the wave-like track of the station over the ground. You'll also see that each consecutive wave is quite shifted from the previous. This is because of Earth's rotation. The wave shows the movement of the station and Earth didn't rotate it would keep moving over the same wave on the ground, but because of rotation, on every orbit, there is a different line of locations underneath.

  12. #10
    Join Date
    Aug 2013
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    The ISS orbit is shown clearly and can be tracked via the Satview website link below.

    http://www.satview.org/

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