• Source: (505478) 2013 UT15

    • (505478) 2013 UT15 is an extreme trans-Neptunian object from the scattered disc, located in the outermost regions of the Solar System, approximately 260 kilometers (160 miles) in diameter. It was discovered on 2 August 2013, by astronomers of the Outer Solar System Origins Survey at Mauna Kea Observatory, Hawaii, United States.


    Orbit


    With a semi-major axis of 196 AU, 2013 UT15 orbits the Sun at a distance of 43.9–348 AU once every 2,742 years. Its orbit has an eccentricity of 0.78 and an inclination of 11° with respect to the ecliptic.
    It has a similar orbit to (148209) 2000 CR105, except for a smaller inclination.
    2013 UT15 belongs to a small number of detached objects with perihelion distances of 30 AU or more, and semi-major axes of 150 AU or more. Such objects can not reach such orbits without some perturbing object, which lead to the speculation of planet nine.


    Physical characteristics




    = Spectral type

    =
    The object is estimated to have a bluish spectra (BB).


    = Diameter

    =
    2013 UT15 has been estimated to measure 243 and 340 kilometers in diameter, based on an assumed albedo of 0.09 and 0.04, respectively. A generic magnitude-to-diameter conversion gives a mean-diameter of 260 kilometers, using with a typical albedo of 0.08 and a published absolute magnitude of 6.2951.


    Numbering and naming


    2013 UT15 was numbered (505478) by the Minor Planet Center on 4 November 2017 (M.P.C. 107067). As of 2017, this minor planet has not received a name.


    References




    External links


    MPEC 2017-M21 : 2013 UT15
    Asteroid Lightcurve Database (LCDB), query form (info Archived 16 December 2017 at the Wayback Machine)
    Dictionary of Minor Planet Names, Google books
    Asteroids and comets rotation curves, CdR – Observatoire de Genève, Raoul Behrend
    Discovery Circumstances: Numbered Minor Planets (505001)-(510000) – Minor Planet Center
    (505478) 2013 UT15 at AstDyS-2, Asteroids—Dynamic Site
    Ephemeris · Observation prediction · Orbital info · Proper elements · Observational info
    (505478) 2013 UT15 at the JPL Small-Body Database

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