Curtin University Homepage
  • Library
  • Help
    • Admin

    espace - Curtin’s institutional repository

    JavaScript is disabled for your browser. Some features of this site may not work without it.
    View Item 
    • espace Home
    • espace
    • Curtin Research Publications
    • View Item
    • espace Home
    • espace
    • Curtin Research Publications
    • View Item

    3D meteoroid trajectories

    Access Status
    Fulltext not available
    Authors
    Sansom, E.
    Jansen-Sturgeon, T.
    Rutten, M.
    Devillepoix, Hadrien
    Bland, Phil
    Howie, Robert
    Cox, M.
    Towner, Martin
    Cupák, M.
    Hartig, Ben
    Date
    2019
    Type
    Journal Article
    
    Metadata
    Show full item record
    Citation
    Sansom, E. and Jansen-Sturgeon, T. and Rutten, M. and Devillepoix, H. and Bland, P. and Howie, R. and Cox, M. et al. 2019. 3D meteoroid trajectories. Icarus. 321: pp. 388-406.
    Source Title
    Icarus
    DOI
    10.1016/j.icarus.2018.09.026
    ISSN
    0019-1035
    School
    School of Earth and Planetary Sciences (EPS)
    Funding and Sponsorship
    http://purl.org/au-research/grants/arc/DP170102529
    URI
    http://hdl.handle.net/20.500.11937/73866
    Collection
    • Curtin Research Publications
    Abstract

    Meteoroid modelling of fireball data typically uses a one dimensional model along a straight line triangulated trajectory. The assumption of a straight line trajectory has been considered an acceptable simplification for fireballs, but it has not been rigorously tested. The unique capability of the Desert Fireball Network (DFN) to triangulate discrete observation times gives the opportunity to investigate the deviation of a meteoroid's position to different model fits. Here we assess the viability of a straight line assumption for fireball data in two meteorite-dropping test cases observed by the Desert Fireball Network (DFN) in Australia – one over 21 s (DN151212_03), one under 5 seconds (DN160410_03). We show that a straight line is not valid for these two meteorite dropping events and propose a three dimensional particle filter to model meteoroid positions without any straight line constraints. The single body equations in three dimensions, along with the luminosity equation, are applied to the particle filter methodology described by Sansom et al. (2017). Modelling fireball camera network data in three dimensions has not previously been attempted. This allows the raw astrometric, line-of-sight observations to be incorporated directly. In analysing these two DFN events, the triangulated positions based on a straight line assumption result in the modelled meteoroid positions diverging up to 3.09 km from the calculated observed point (for DN151212_03). Even for the more typical fireball event, DN160410_03, we see a divergence of up to 360 m. As DFN observations are typically precise to < 100 m, it is apparent that the assumption of a straight line is an oversimplification that will affect orbit calculations and meteorite search regions for a significant fraction of events.

    Related items

    Showing items related by title, author, creator and subject.

    • Determining Fireball Fates Using the α-β Criterion
      Sansom, Eleanor ; Gritsevich, M.; Devillepoix, Hadrien ; Jansen-Sturgeon, Trent; Shober, Patrick; Bland, Phil ; Towner, Martin ; Cupak, Martin ; Howie, Robert ; Hartig, Benjamin (2019)
      As fireball networks grow, the number of events observed becomes unfeasible to manage by manual efforts. Reducing and analyzing big data requires automated data pipelines. Triangulation of a fireball trajectory can swiftly ...
    • Analyzing meteoroid flights using particle filters
      Sansom, E.; Rutten, M.; Bland, Phil (2017)
      Fireball observations from camera networks provide position and time information along the trajectory of a meteoroid that is transiting our atmosphere. The complete dynamical state of the meteoroid at each measured time ...
    • Characterising fireballs for mass determination: Steps toward automating the Australian desert fireball network
      Sansom, E.; Bland, Phil; Paxman, J.; Towner, Martin (2014)
      Determining the mass of a meteoroid passing through the Earth's atmosphere is essential to determining potential meteorite fall positions. This is only possible if the characteristics of these meteoroids, such as density ...
    Advanced search

    Browse

    Communities & CollectionsIssue DateAuthorTitleSubjectDocument TypeThis CollectionIssue DateAuthorTitleSubjectDocument Type

    My Account

    Admin

    Statistics

    Most Popular ItemsStatistics by CountryMost Popular Authors

    Follow Curtin

    • 
    • 
    • 
    • 
    • 

    CRICOS Provider Code: 00301JABN: 99 143 842 569TEQSA: PRV12158

    Copyright | Disclaimer | Privacy statement | Accessibility

    Curtin would like to pay respect to the Aboriginal and Torres Strait Islander members of our community by acknowledging the traditional owners of the land on which the Perth campus is located, the Whadjuk people of the Nyungar Nation; and on our Kalgoorlie campus, the Wongutha people of the North-Eastern Goldfields.