The Experts below are selected from a list of 3 Experts worldwide ranked by ideXlab platform

Scott S. Sheppard - One of the best experts on this subject based on the ideXlab platform.

  • THE ORBITS OF Neptune'S OUTER Satellites
    The Astronomical Journal, 2011
    Co-Authors: Marina Brozovic, Robert A. Jacobson, Scott S. Sheppard
    Abstract:

    In 2009, we used the Subaru telescope to observe all the faint irregular Satellites of Neptune for the first time since 2004. These observations extend the data arcs for Halimede, Psamathe, Sao, Laomedeia, and Neso from a few years to nearly a decade. We also report on a search for unknown Neptune Satellites in a half-square degree of sky and a limiting magnitude of 26.2 in the R band. No new Satellites of Neptune were found. We numerically integrate the orbits for the five irregulars and summarize the results of the orbital fits in terms of the state vectors, post-fit residuals, and mean orbital elements. Sao and Neso are confirmed to be Kozai librators, while Psamathe is a reverse circulator. Halimede and Laomedeia do not seem to experience any strong resonant effects.

Marina Brozovic - One of the best experts on this subject based on the ideXlab platform.

  • THE ORBITS OF Neptune'S OUTER Satellites
    The Astronomical Journal, 2011
    Co-Authors: Marina Brozovic, Robert A. Jacobson, Scott S. Sheppard
    Abstract:

    In 2009, we used the Subaru telescope to observe all the faint irregular Satellites of Neptune for the first time since 2004. These observations extend the data arcs for Halimede, Psamathe, Sao, Laomedeia, and Neso from a few years to nearly a decade. We also report on a search for unknown Neptune Satellites in a half-square degree of sky and a limiting magnitude of 26.2 in the R band. No new Satellites of Neptune were found. We numerically integrate the orbits for the five irregulars and summarize the results of the orbital fits in terms of the state vectors, post-fit residuals, and mean orbital elements. Sao and Neso are confirmed to be Kozai librators, while Psamathe is a reverse circulator. Halimede and Laomedeia do not seem to experience any strong resonant effects.

Robert A. Jacobson - One of the best experts on this subject based on the ideXlab platform.

  • THE ORBITS OF Neptune'S OUTER Satellites
    The Astronomical Journal, 2011
    Co-Authors: Marina Brozovic, Robert A. Jacobson, Scott S. Sheppard
    Abstract:

    In 2009, we used the Subaru telescope to observe all the faint irregular Satellites of Neptune for the first time since 2004. These observations extend the data arcs for Halimede, Psamathe, Sao, Laomedeia, and Neso from a few years to nearly a decade. We also report on a search for unknown Neptune Satellites in a half-square degree of sky and a limiting magnitude of 26.2 in the R band. No new Satellites of Neptune were found. We numerically integrate the orbits for the five irregulars and summarize the results of the orbital fits in terms of the state vectors, post-fit residuals, and mean orbital elements. Sao and Neso are confirmed to be Kozai librators, while Psamathe is a reverse circulator. Halimede and Laomedeia do not seem to experience any strong resonant effects.