Absolute magnitudes and slope parameters for 250,000 asteroids observed by Pan-STARRS PS1 - preliminary results

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    • Peter Vereš
    • Robert Jedicke
    • Alan Fitzsimmons
    • Larry Denneau
    • Mikael Granvik
    • Bryce Bolin
    • Serge Chastel
    • Richard J. Wainscoat
    • William S. Burgett
    • Kenneth C. Chambers
    • Heather Flewelling
    • Nick Kaiser
    • Eugen A. Magnier
    • Jeff S. Morgan
    • Paul A. Price
    • John L. Tonry
    • Christopher Waters

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    We present the results of a Monte Carlo technique to calculate the absolute magnitudes (H) and slope parameters (G) of about 240,000 asteroids observed by the Pan-STARRS1 telescope during the first 15 months of its 3-year all-sky survey mission. The system's exquisite photometry with photometric errors asteroids rotation period, amplitude and color to derive the most-likely H and G, but its major advantage is in estimating realistic statistical+systematic uncertainties and errors on each parameter. The method was confirmed by comparison with the well-established and accurate results for about 500 asteroids provided by Pravec et al. (2012) and then applied to determining H and G for the Pan-STARRS1 asteroids using both the Muinonen et al. (2010) and Bowell et al. (1989) phase functions. Our results confirm the bias in MPC photometry discovered by ( Jurić et al., 2002).

    Documents

    DOI

    Original languageEnglish
    Number of pages14
    Pages (from-to)34-47
    JournalIcarus
    Journal publication date15 Nov 2015
    Volume261
    Early online date13 Aug 2015
    DOIs
    StatePublished - 15 Nov 2015

      Research areas

    • astro-ph.EP

    ID: 16209680