PLOTS
In the figures generated by our graphic tool, the points
representing the asteroids in proper elements space are color-coded
for family status and resonances. Black= background, red=core families,
yellow= halo/small familes, green=attributed to existing families, purple=double classification, blue= resonant/chaotic.
Other Plots
A global view of the trans-neptunian region by means of proper
elements. The red points indicate strongly chaotic orbits,
the green points indicate proper elements degraded by secular
resonances.
CATALOGS
Catalogs of proper elements; they are computed on the osculating
elements above, by means of
OrbFit free
software .
- Synthetic proper elements computed numerically.
- An estimate of the accuracy is available for each set of synthetic proper elements.
- Proper elements computed analytically, algorithm version 9.
FAMILY CLASSIFICATIONS
PUBLISHED PAPERS
ANALYTIC PROPER AND MEAN ELEMENTS
- The paper A. Milani & Z. Knezevic: Asteroid mean
elements: higher order and iterative theories, Celestial
Mechanics, 71, 55-78, 1999.(format: .ps.gz) , ( .pdf) , presents the
last results on analytic mean elements.
PROPER ELEMENTS MAIN BELT
- The paper Z. Knezevic & A. Milani: Synthetic proper
elements for outer main belt asteroids, CMDA, 78, 17–46,
2000.(format: .ps.gz)
, ( .pdf) presents
the results on synthetic proper elements.
- The paper Knezevic Z., A. Lemaitre and A. Milani:
2002. The determination of asteroid proper elements.
In: Asteroids III (W. Bottke, A. Cellino, P. Paolicchi and
R.P. Binzel, Eds.), Univ. Arizona Press and LPI, 603–612.(format: .ps.gz) , ( .pdf) presents a
review of methods and results on proper elements.
- The paper Knezevic Z. and A. Milani: 2003. Proper element
catalogs and asteroid families. Astron. Astrophys. 403,
1165–1173.(format:
.ps.gz) , ( .pdf)
presents the AstDyS service and applications of synthetic proper
elements.
PROPER ELEMENTS TROJANS
- The paper Milani, A. The Trojan asteroid belt: proper
elements, stability, chaos and families, CMDA 57, 59-94,
1993.
abstract presents the theory for synthetic Trojan proper
elements.
- The paper Beaugé, C. and Roig, F. A Semianalytical Model
for the Motion of the Trojan Asteroids: Proper Elements and
Families. Icarus, Volume 153, Issue 2, pp. 391-415, 2001 (abstract)
presents the results on semianalytic proper elements for Trojan
asteroids.
FAMILY CLASSIFICATIONS
- The paper A. Milani, A. Cellino, Z. Knezevic, B. Novakovic,
F. Spoto & P. Paolicchi: Asteroid families classification:
exploiting very large data sets, Icarus 239, 46-73, 2014 (see preprint on arXiv)
documents the theory of the family classification presented here.
- The paper Z. Knezevic, A. Milani, A. Cellino, B. Novakovic,
F. Spoto & P. Paolicchi: Automated Classification of
Asteroids into Families at Work, Complex Planetary Systems,
Proceedings of the International Astronomical Union, IAU Symposium,
Volume 310, 130-133, 2014 (abstract)
shows how by the new approach presented in the previous paper the
asteroid family classification becomes stable in general terms, and
in the same time evolving in details at each update.
FAMILY AGES
- The paper F. Spoto, A. Milani & Z. Knezevic: Asteroid
family ages, Icarus 257, 275-289, 2015 (see preprint on
arXiv) presents the method used to obtain the V-shapes and the
family ages presented here.
SOFTWARE
Software used in the computation of proper elements, both synthetic
and analytic