• Source: 2012 GX17

    • 2012 GX17, also written as 2012 GX17, is a minor body classified as Centaur and Trans-Neptunian object by the Minor Planet Center.
    The object was once considered a promising Neptune L5 trojan candidate.


    Discovery


    2012 GX17 was discovered on 14 April 2012 by the Pan-STARRS 1 telescope, observing from Haleakala, Hawaii.


    Orbit


    2012 GX17 follows a rather eccentric orbit (0.55) with a semi-major axis of 37.4 AU. This object also has high orbital inclination (32.5º).


    Physical properties


    2012 GX17 is a rather large minor body with an absolute magnitude of 7.6 which gives a characteristic diameter of 60–200 km for an assumed albedo in the range 0.5–0.05.


    Former Neptune trojan candidate


    Initially, 2012 GX17 was considered to be a promising Neptune trojan candidate, based on a very preliminary determination of 30.13 AU for its semi-major axis. However, the true value is much larger (37.4 AU) and it is now classified as a Trans-Neptunian object.


    References




    External links


    Four temporary Neptune co-orbitals: (148975) 2001 XA255, (310071) 2010 KR59, (316179) 2010 EN65, and 2012 GX17 by de la Fuente Marcos, C., & de la Fuente Marcos, R. 2012, Astronomy and Astrophysics, Volume 547, id.L2, 7 pp.
    Early discovery note
    2012 GX17 data at MPC
    IAU list of centaurs and scattered-disk objects
    IAU list of trans-neptunian objects
    Another list of TNOs
    The Long Term Dynamical Stability of the Known Neptune Trojans, Jack Lang Soutter, Master of Science thesis (not a Neptune trojan)
    2012 GX17 at the JPL Small-Body Database

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