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Mon. Not. R. Astron. Soc. 338, 443451 (2003) A new class of trans-Neptunian objects in high-eccentricity orbits
 

Summary: Mon. Not. R. Astron. Soc. 338, 443451 (2003)
A new class of trans-Neptunian objects in high-eccentricity orbits
V. V. Emel'yanenko,1
D. J. Asher2
and M. E. Bailey2
1South Ural University, Chelyabinsk, 454080, Russia
2Armagh Observatory, College Hill, Armagh BT61 9DG
Accepted 2002 September 11. Received 2002 September 10; in original form 2002 June 12
ABSTRACT
A symplectic integrator is used to study the evolution of high-eccentricity trans-Neptunian
objects (TNOs) over the age of the Solar system. For 26 objects, a few cloned orbits were
integrated. We demonstrate the existence of several known bodies that are in relatively sta-
ble orbits located far from Neptune for the age of the Solar system. Thus, we provide
an indication of the structure of the protoplanetary disc immediately after the period of
planet formation. The orbits of these bodies cannot be explained by a model in which a
near-Neptune disc of planetesimals is gravitationally scattered by Neptune. In this paper,
therefore, we demonstrate the existence of a new, and populous, class of `outer' TNOs
which have substantially different dynamical characteristics from those of scattered disc
objects.
Key words: celestial mechanics comets: general Kuiper belt minor planets, asteroids

  

Source: Armagh Observatory

 

Collections: Physics