Sökning: "libration"

Hittade 3 uppsatser innehållade ordet libration.

  1. 1. Accessibility Studies of Potentially Hazardous Asteroids from the Sun-Earth L2 Libration Point

    Master-uppsats, Luleå tekniska universitet/Rymdteknik

    Författare :GAUTHAM GANESAN; [2020]
    Nyckelord :Near-Earth Objects; Potentially Hazardous Asteroids; Halo Orbit; Invariant Manifolds; Analytical construction; Palermo Scale; Low-Energy transfer;

    Sammanfattning : A newly proposed F-class mission by the European Space Agency (ESA) in 2019,Comet Interceptor, aims to dynamically intercept a New Solar System Objectsuch as a Dynamically New Comet (DNC). The Spacecraft will be placed in aperiodic (Halo) orbit around the Sun-Earth L2 Lagrangian point, waiting for furtherinstructions about the passage of a comet or an asteroid, which could well bereached within the stipulated mission constraints. LÄS MER

  3. 2. Hunting for Planet Nine by its perturbations on the Main Asteroid Belt

    Kandidat-uppsats, Lunds universitet/Astronomi - Genomgår omorganisation

    Författare :Albin Jonsson; [2019]
    Nyckelord :Planet Nine; Main Asteroid Belt; Perturbations; evection resonance; libration; Physics and Astronomy;

    Sammanfattning : In recent years, scientists have found unconfirmed evidence for a ninth planet in the solar system at a very wide orbit. The parameters for this planet are poorly constrained. Current estimates mostly come from the effect the planet has on trans-neptunian objects. LÄS MER

  4. 3. Demokratins librationspunkt : Om bibliotek på entreprenad i BBL och bis 2005-2011

    Master-uppsats, Institutionen för ABM

    Författare :Mikael Rydén; [2012]
    Nyckelord :Folkbibliotek; entreprenad; demokrati; bildning; frihet; makt.;

    Sammanfattning : The aim of this Master´s thesis is to examine the debate in Swedish library press concerning outsourcing of public libraries. The two magazines studied are BBL (Biblioteksbladet) and bis (bibliotek i samhälle). The period of time covered by the selected articles is 2005 to 2011. LÄS MER