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Orbit around the Galactic Center

  1. Mar 26, 2010 #1
    The Galactic Center of the Milky Way is about 25,900 light years away from the solar system. Its mass is 4.31E6*(Mass of the Sun). What I would like to know is what is the elliptical, circular, or etc orbit around the singularity especially the vector v and vector r. And if there is one, the reference frame that is commonly used for this singularity?
  2. jcsd
  3. Mar 27, 2010 #2


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    You're talking about the orbit the Sun makes around the galactic center or the orbits of the stars near the center which orbit the supermassive black hole?
  4. Mar 27, 2010 #3
    I would like the orbit the Sun makes around the galactic center of the Milky Way Galaxy! All I need is just two vectors: the velocity of the Sun in the reference frame of the singularity and the radius of the Sun to the singularity in the reference frame of the singularity.
    Last edited: Mar 27, 2010
  5. Mar 28, 2010 #4


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    Oh, the alignment between earth, sun and the galactic center is so exciting . . . what a bunch of crap. If the cubs win the world series in 2012, i might worry.
  6. Mar 28, 2010 #5

    D H

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    The solar system does not follow a Keplerian path (i.e., conic section) about the galaxy. Keplerian orbits arise in system comprising a single large central mass with all other objects having inconsequential mass. While the galaxy does have a large central mass, the mass of that singularity (~4.1 million solar masses) is but a small fraction of the total mass of the galaxy (~580 billion solar masses).
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