- "On Near-Earth Asteroid Study at Department of Astronomy, Bandung Institute of Technology" by S. Siregar.
- "Assessing the physical nature of near-Earth asteroids through their dynamical histories" by Julio A. Fernández, Andrea Sosa, Tabaré Gallardo, Jorge N. Gutiérrez.
JPL Small-Body Database Browser:
Orbital Elements at Epoch 2458000.5 (2017-Sep-04.0) TDB
Reference: JPL 31 (heliocentric ecliptic J2000)
|Orbit Determination Parameters|
Algorithm: Bulirsch-Stoer (conservative systems)
Integration start epoch: 2458000.5000000 days
Integration stop epoch: -100000000.0000000
Output interval: 100.000
Output precision: medium
Initial timestep: 0.050 days
Accuracy parameter: 1.0000E-12
Central mass: 1.0000E+00 solar masses
Ejection distance: 1.0000E+02 AU
Radius of central body: 5.0000E-03 AU
- 79 out of 100 clones have a cometary like orbit.
- of which: 13 came on a hyperbolic orbit (Vinfinity = 42.1219*sqrt(-0.5/a) --> the minimum absolute value for semi-major axis a was -17.46 AU -->the maximum value for Vinfinity was 7.14 km/s
- 1 out of 100 was discarded because "hit" the sun (due to extremely high eccentricity).
The time when they entered the solar system was distributed as follows:
Min. 1st Qu. Median Mean 3rd Qu. Max.
-272319 -151956 -85380 -100222 -38660 -370
In a graphical form:
A look at the nominal asteroid
Close Approaches analysis
For every given planet, every clone had a certain number of close approaches so we can calculate the mean number of close approaches and the mean number of Dmin (distance of the close approach). Even better, we can print a boxplot showing the distribution of the number of close approaches and their distances.