Exotic orbits of asteroids in the solar system and their impacts on space missions

Veröffentlichungen: Beitrag in BuchBeitrag in Konferenzband

Abstract

Speaking of exotic orbits we mean objects in co-orbital motion. Objects in co-orbital motion are two celestial bodies moving in the same orbit or similar distance to the central body then they are in the so called 1:1 mean motion resonance (MMR). There are several configurations of co-orbital objects, depending on their point of libration:
1. The satellite configuration. 2. A common configuration in our Solar System especially for asteroids is the so-called Trojans. These are two groups of asteroids moving close to the equilibrium points (Lagrangian points) L4 and L5 in a 1:1 mean motion resonance with Jupiter (also with Earth, Mars, Uranus and Neptune). That means that Jupiter's Trojans are moving either close to 60° ahead respectively 60° behind the Jupiter with the same semi-major axis as the planet. 3. Similar class to the Trojan class is the horseshoe orbits, in which objects librates around 180° from the planet. 4. Another exotic class of orbits is the exchange orbit that occurs when two co-orbital objects are of similar masses and thus exert a non-negligible influence on each other. The objects can exchange semi-major axes (e.g. Saturnian moons Janus and Epimetheus) or eccentricities when they approach each other.

After the success of space missions like SOHO and Herschel-Plank the scientific interest increased towards to the benefit of the Lagrangian points and other exotic motions.
OriginalspracheEnglisch
TitelInternational Conference "The 3rd Conference on Astrophysics and Space Science (APSS 2017)"
Untertitelheld from January 3 to 5, 2017 in Bangkok, Thailand
PublikationsstatusVeröffentlicht - Jan. 2017

ÖFOS 2012

  • 103003 Astronomie
  • 103004 Astrophysik

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