• Source: (445473) 2010 VZ98

    • (445473) 2010 VZ98 (provisional designation 2010 VZ98) is a trans-Neptunian object of the scattered disc, orbiting the Sun in the outermost region of the Solar System. It has a diameter of approximately 400 kilometers.
    It was discovered on 11 November 2010, by American astronomers David Rabinowitz, Megan Schwamb and Suzanne Tourtellotte at ESO's La Silla Observatory site in northern Chile, when it was 38 AU from the Sun.


    Orbit and classification


    2010 VZ98 orbits the Sun at a distance of 34.3–266.6 AU once every 1846 years (674,262 days; semi-major axis of 150.5 AU). Its orbit has a high eccentricity of 0.77 and an inclination of 5° with respect to the ecliptic. Small number statistics suggest that this body may be trapped in a 3:2 orbital resonance with an unseen planet beyond Neptune with a semi-major axis of 195–215 AU. The first precovery was taken by the Sloan Digital Sky Survey at the Apache Point Observatory in 1998, extending the body's observation arc by 12 years prior to its discovery. The precoveries were found in May 2015 (MPS 604632).


    Physical characteristics


    A rotational lightcurve of 2010 VZ98 was obtained from photometric observation by members of the Carnegie Institution for Science at Las Campanas Observatory, Chile. The light-curve gave a rotation period of 9.72±0.05 hours with a brightness variation of 0.18 magnitude (U=n.a.).


    = Diameter and albedo

    =
    While American astronomer Michael E. Brown assumes a diameter of 471 kilometers and an albedo of 0.07, the Johnston's Archive estimates a diameter of 443 kilometers with generic albedo of 0.09. The Collaborative Asteroid Lightcurve Link assumes an albedo of 0.10 and calculates a diameter of 401 kilometers. These estimates are based on an absolute magnitude between 5.0 and 5.3.


    Naming


    As of 2018, this minor planet remains unnamed.


    See also


    List of Solar System objects by greatest aphelion


    References




    External links


    List Of Centaurs and Scattered-Disk Objects, Minor Planet Center
    Asteroid Lightcurve Database (LCDB), query form (info Archived 2017-12-16 at the Wayback Machine)
    Discovery Circumstances: Numbered Minor Planets (445001)-(450000) – Minor Planet Center
    (445473) 2010 VZ98 at AstDyS-2, Asteroids—Dynamic Site
    Ephemeris · Observation prediction · Orbital info · Proper elements · Observational info
    (445473) 2010 VZ98 at the JPL Small-Body Database

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