Astronomical School’s Report, 2013, Volume 9, Issue 2, Pages 155–161

https://doi.org/10.18372/2411-6602.09.2155
Download PDF
UDC 523.6, 615.851

Dynamical evolution of 93 Damocloids

Kovalenko N.S.1, Guliyev R.A.2, Churyumov K.I.1, Ponomarenko V.A.1, Kleshchenok V.V.1

1Astronomical Observatory, Kyiv Shevchenko National University, Ukraine
2Shamakhi Astrophysical Observatory, Azerbaijan

Abstract

DYNAMICAL EVOLUTION OF 93 DAMOCLOIDS, by Kovalenko N.S., Guliyev R.A., Churyumov K.I., Ponomarenko V.A., Kleshchenok V.V. Orbital evolution of Damocloides was integrated for 1 Gyr forward and backward in time, by using SWIFTER package. These asteroids move along highly inclined orbits (some of them are on retrograde orbits), and have Tisserand invariant Tj ≤ 2 (while Jupiter family comets have Tj > 2). Damocloides are believed to be transitional population between Oort cloud cometary nuclei and Halley type comets (those also have Tisserand parameter Tj ≤ 2), or inactive nuclei of Halley type comets. It is shown, the dynamical lifetime of the population is about 106 – 107 years. Results of the simulation for different orbital parameters are discussed.

Keywords: orbital evolution; Damocloides; retrograde motion

References

  1. Morbidelli A. Origin and dynamical evolution of comets and their reservoirs. 2008, arxiv:astro-ph/0512256.
  2. Jewitt D. (2005). A first look at the Damocloids. The Astronomical Journal, 530–538. https://doi.org/10.1086/426328
  3. http://ssd.jpl.nasa.gov/sbdb_query.cgi#x
  4. http://www.boulder.swri.edu/swifter/
  5. Duncan M.J., Levison H.F., Lee M.H. (1998). . A Multiple Time Step Symplectic Algorithm for Integrating Close Encounters. The Astronomical Journal, 2067–2077. https://doi.org/10.1086/300541
  6. Levison H.F., Duncan M.J. (2000). Symplectically Integrating Close Encounters with the Sun. The Astronomical Journal, 2117–2123. https://doi.org/10.1086/301553
  7. Horner J., Evans N.W., Bailey M. E. (2004). Simulations of the Population of Centaurs I: The Bulk Statistics. Monthly Notices of the Royal Astron. Soc., 798–810. https://doi.org/10.1111/j.1365-2966.2004.08240.x

Download PDF