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    OpenOrb: Open-source asteroid orbit computation software including statistical ranging

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    Author
    Granvik, M.
    Virtanen, J.
    Oszkiewicz, D.
    Muinonen, K.
    Issue Date
    2009-01-01
    Keywords
    asteroids
    Kuiper belt
    orbits
    Transneptunian
    
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    Citation
    Granvik, M., Virtanen, J., Oszkiewicz, D., & Muinonen, K. (2009). OpenOrb: Open‐source asteroid orbit computation software including statistical ranging. Meteoritics & Planetary Science, 44(12), 1853-1861.
    Publisher
    The Meteoritical Society
    Journal
    Meteoritics & Planetary Science
    URI
    http://hdl.handle.net/10150/656648
    DOI
    10.1111/j.1945-5100.2009.tb01994.x
    Additional Links
    https://meteoritical.org/
    Abstract
    We are making an open-source asteroid orbit computation software package called OpenOrb publicly available. OpenOrb is built on a well-established Bayesian inversion theory, which means that it is to a large part complementary to orbit-computation packages currently available. In particular, OpenOrb is the first package that contains tools for rigorously estimating the uncertainties resulting from the inverse problem of computing orbital elements using scarce astrometry. In addition to the well-known least-squares method, OpenOrb also contains both Monte-Carlo (MC) and Markov-Chain MC (MCMC; Oszkiewicz et al. [2009]) versions of the statistical ranging method. Ranging allows the user to obtain sampled, non-Gaussian orbital-element probability-density functions and is therefore optimized for cases where the amount of astrometry is scarce or spans a relatively short time interval. Ranging-based methods have successfully been applied to a variety of different problems such as rigorous ephemeris prediction, orbital element distribution studies for transneptunian objects, the computation of invariant collision probabilities between near-Earth objects and the Earth, detection of linkages between astrometric asteroid observations within an apparition as well as between apparitions, and in the rigorous analysis of the impact of orbital arc length and/or astrometric uncertainty on the uncertainty of the resulting orbits. Tools for making ephemeris predictions and for classifying objects based on their orbits are also available in OpenOrb. As an example, we use OpenOrb in the search for candidate retrograde and/or high-inclination objects similar to 2008 KV42 in the known population of transneptunian objects that have an observational time span shorter than 30 days.
    Type
    Article
    text
    Language
    en
    ISSN
    1945-5100
    ae974a485f413a2113503eed53cd6c53
    10.1111/j.1945-5100.2009.tb01994.x
    Scopus Count
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    Meteoritics & Planetary Science, Volume 44, Number 12 (2009)

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