Essays about: "kometer"

Showing result 1 - 5 of 6 essays containing the word kometer.

  1. 1. Exocomets in the β Pictoris system

    University essay from Lunds universitet/Astrofysik; Lunds universitet/Fysiska institutionen

    Author : Klaudia Jaworska; [2024]
    Keywords : Physics and Astronomy;

    Abstract : Comets have been a source of fascination throughout the history of man. In recent years, advances in technology have opened up for the study of extrasolar objects, among them exocomets. The first exocomets were observed in the β Pictoris system almost 50 years ago and the system has been of interest ever since. READ MORE

  3. 2. Trajectory Optimisation of a Spacecraft Swarm Maximising Gravitational Signal

    University essay from KTH/Optimeringslära och systemteori

    Author : Rasmus Maråk; [2023]
    Keywords : Spacecraft Swarms; Trajectory Optimisation; Impulsive Manoeuvres; Evolutionary Algorithms; Polyhedral Gravity Model; Small Body Exploration; Discrete Spherical Grids; Svärmande rymdfarkoster; Banoptimering; Impulsiva manövrar; Evolutionära Algoritmer; Polyhedral gravitationsmodell; Utforksning av små kroppar i solsystemet; Diskreta sfäriska rutnät;

    Abstract : Proper modelling of the gravitational fields of irregularly shaped asteroids and comets is an essential yet challenging part of any spacecraft visit and flyby to these bodies. Accurate density representations provide crucial information for proximity missions, which rely heavily on it to design safe and efficient trajectories. READ MORE

  4. 3. Optical Navigation for Autonomous Approach of Unexplored Small Bodies

    University essay from KTH/Rymdteknik

    Author : Jacopo Villa; [2020]
    Keywords : Small Bodies; Asteroids; Comets; Autonomy; SLAM; Mapping; Navigation; Orbit Determination; Astrodynamics; Computer Vision; Feature Tracking; Små Kroppar; Asteroider; Kometer; Autonomi; SLAM; Kartläggning; Navigering; Omloppsbestämning; Astrodynamik; Computer Vision; Feature Tracking;

    Abstract : This thesis presents an autonomous vision-based navigation strategy applicable to the approach phase of a small body mission, developed within the Robotics Section at NASA Jet Propulsion Laboratory. Today, the operations performed to approach small planetary bodies are largely dependent on ground support and human decision-making, which demand operational complexity and restrict the spectrum of achievable activities throughout the mission. READ MORE

  5. 4. Statistical analysis of the electric field measurements from the Rosetta spacecraft in the plasma environment of comet 67P/Churyumov-Gerasimenko

    University essay from KTH/Rymd- och plasmafysik

    Author : Guillame Dickeli; [2017]
    Keywords : ;

    Abstract : Comets are a key to understanding the early stages of the solar system. They were hereat its formation and have not evolved ever since, which means they are our best shotat learning the processes that led to the formation of the solar system as we know ittoday. Yet, our knowledge about these bodies is very limited. READ MORE

  6. 5. Relative astrometry and orbit determination

    University essay from Lunds universitet/Astronomi - Genomgår omorganisation; Lunds universitet/Institutionen för astronomi och teoretisk fysik - Genomgår omorganisation

    Author : Madeleine Burheim; [2014]
    Keywords : Physics and Astronomy;

    Abstract : Att bestämma omloppsbanan för en komet kan svara på många frågor omvårt solsystem, och även resten av universum. Idag använder vi oss av olika algoritmer för att preliminärt kunna beräkna omloppsbanor hos bland annat kometer, men vad krävs egentligen för att få ett någorlunda korrekt resultat? Det finns ett antal olika metoder för att bestämma omloppsbanan hos en komet, men alla är grundade i den äldsta grenen av astronomin;astrometri, vars syfte är att mäta positioner och rörelser hos olika himlakroppar. READ MORE