Sökning: "omloppsbanor"
Visar resultat 11 - 15 av 30 uppsatser innehållade ordet omloppsbanor.
11. How did Jupiter form?
Kandidat-uppsats, Lunds universitet/Astronomi - Genomgår omorganisationSammanfattning : Two relatively new concepts in planetary science are planetary migration; wherein the planets migrate through the protoplanetary disk as they form, and pebble accretion; wherein the planetesimals which become terrestrial planets and giant planet cores grow through the accretion of small pebbles. Planetary migration has become a generally accepted concept but there is still much to be learned even about how it affected the formation of our own solar system. LÄS MER
12. Hunting for Planet Nine by its perturbations on the Main Asteroid Belt
Kandidat-uppsats, Lunds universitet/Astronomi - Genomgår omorganisationSammanfattning : 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
13. Space Surveillance and Tracking Tool: Implementation and Test of New Methods
Master-uppsats, KTH/RymdteknikSammanfattning : In March 2019 the number of artificial objects bigger than 1 mm in orbit around the Earth is estimated to be more than 170 millions. Only a small fraction of them (0.03%) is catalogued. An impact of an operational satellite with one of these debris can damage the satellite and undermine its mission. LÄS MER
14. Can tidal interactions produce MGC1?
Master-uppsats, Lunds universitet/Astronomi - Genomgår omorganisation; Lunds universitet/Institutionen för astronomi och teoretisk fysik - Genomgår omorganisationSammanfattning : The globular cluster population of large spiral galaxies can be divided into two populations: one population which formed in-situ and one which has been assembled through capture of clusters that have been tidally stripped away from other galaxies during close encounters or mergers. In this work, I focus on the globular cluster MGC1, which is orbiting the M31 galaxy. LÄS MER
15. Hybrid Differential Dynamic Programming Algorithm for Low-Thrust Trajectory Design Using Exact High-Order Transition Maps
Master-uppsats, KTH/RymdteknikSammanfattning : Optimal orbital trajectories are obtained through the solution of highly nonlinear large scale problems. In the case of low-thrust propulsion applications, the spacecraft benefits from high specific impulses and, hence, greater payload mass. LÄS MER
