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I Can anyone tell me if 2009 MS9 is prograde or retrograde?

  1. Jan 5, 2018 #1
    I'm constructing a theory on the origin of extreme trans-neptunian objects.

    Can anyone tell me if 2009 MS9 is prograde or retrograde in its orbit? (and show me where you found this information out). I can't for the life of me find it anywhere.

  2. jcsd
  3. Jan 5, 2018 #2
    2009 MS9 is prograde in its orbit. Inclinations greater than 90° describe retrograde orbits, thus, an inclination of between 0° and 90° means the orbiting body has a prograde orbit. 2009 MS9 has an inclination of 68.07923°.

    Source: JPL Small-Body Database Browser - 418993 (2009 MS9)
    Last edited: Jan 5, 2018
  4. Jan 6, 2018 #3
    Big thanks Glitch! That makes things so much clearer.
  5. Jan 10, 2018 #4


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