ETD system

Electronic theses and dissertations repository

 

Tesi etd-07162015-180136


Thesis type
Tesi di dottorato di ricerca
Author
SPOTO, FEDERICA
URN
etd-07162015-180136
Title
The Yarkovsky Effect, Asteroid Dynamics and Impact Monitoring
Settore scientifico disciplinare
MAT/07
Corso di studi
SCIENZE DI BASE "GALILEO GALILEI"
Supervisors
tutor Prof. Milani Comparetti, Andrea
Parole chiave
  • asteroids
  • impact monitoring
  • asteroids families
  • Yarkovsky effect
  • asteroid dynamics
Data inizio appello
18/08/2015;
Consultabilità
Completa
Riassunto analitico
This thesis is a collection of the work carried out during the three
years of Ph.D. studies at the University of Pisa with the Celestial
Mechanics Groups.

The main topics of this thesis range from nongravitational
perturbations, to asteroid orbit determination, and to the impact
monitoring. The nongravitational perturbations arise because outer
space is not empty, and they can affect not only the dynamics of Near
Earth Asteroids (NEAs), but also the determination of the age of
asteroid families. The main nongravitational perturbation is the
Yarkovsky effect, a subtle nongravitational phenomenon related to the
anisotropic thermal emission of Solar System objects. The
nongravitational perturbations also affect the impact probabilities of
NEAs, especially over long time span. For some special cases, we need
to model the Yarkovsky effect to compute the long term propagation to
the possible impacts and the intervening planetary encounters of NEAs.
File